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The M2Al16Pt9 series with M = Ca, La–Nd and Sm–Gd was synthesized from the elements in analogy to the literature known compounds Ce2Al16Pt9 and Sr2Al16Pt9. All compounds crystallize in the orthorhombic crystal system with space group Immm and have been characterized by powder X-ray diffraction. For La2Al16Pt9 and Eu2Al16Pt9 also single-crystal investigations have been conducted. In all cases, Al3Pt2 as well as the members of the REAl5Pt3 series (YNi5Si3 type, space group Pnma) have been observed as side phases. Annealing led in all cases to an increase of the side phases, suggesting that the title compounds decompose peritectically. In the crystal structures, polyanionic [Al16Pt9]δ– networks can be found with large fourfold capped hexagonal prismatic cavities (M@Al6Pt6Al4), which host the respective M atoms. As seen from the unit cell volumes, the La–Nd, Sm and Gd compounds exhibit a formally trivalent oxidation state while the Ca and Eu atoms in Ca2Al16Pt9 and Eu2Al16Pt9 are divalent. [ABSTRACT FROM AUTHOR]

The structural, morphological, magnetic, and dielectric properties of lanthanum substituted nickel ferrite (NiLaxFe2−xO4) nanoparticles have been reported in this article. The amount of lanthanum substitution in NiLaxFe2−xO4 sample was varied from x = 0.025 to 0.125. The nanocrystalline Ni–La ferrites were synthesized using a solution combustion reaction (SCR) method. The orthorhombic crystal system of space group Pnma (62) is shown as the single-phase in all samples through structural investigation utilizing an X-ray diffraction (XRD) pattern. The observed trend indicates a positive correlation between the concentration of La and the corresponding rise in the predicted crystallite size values, which range from 60.5 nm to 65.2 nm. The nanoscale of the surface morphology has been confirmed by the utilisation of field emission scanning electron microscopy (FESEM). Energy dispersive X-ray (EDAX) mapping provides the compositional evidence for the prepared Ni–La ferrites. In addition, X-ray photoelectron spectroscopy (XPS) determines the ionic state of the individual atoms present in these samples. It reveals that there are no changes in the ionic state of the parent component atoms by substituting La. EDAX and XPS evidence the purity of prepared NiLaxFe2−xO4 samples without any other impurity elements. By regulating the composition of dopants, this research can substantiate the superparamagnetic characteristics of ferrites. The paramagnetic nature of lanthanum atoms involves in reducing the coercivity value. The dielectric measurement on NiLaxFe2−xO4 samples reveals that La3+ substitution effectively influence the electro-transport properties. [ABSTRACT FROM AUTHOR]

A doubly mononuclear cobalt(II) complex [Co(Hpmt)2(N3)2]2 (1) (Hpmt = 2-(2-pyridylmethylamino)ethanesulfonic acid; N3 = azide anion) has been synthesized and structurally characterized. Single-crystal X-ray diffraction analysis showed that 1 has crystallized in orthorhombic crystal system, Cmc21 space group. In the two independent and identical complexes, the cobalt(II) centers are both hexa-coordinated in distorted CoN6 octahedrons. The reduced Schiff base ligand Hpmt displayed a new coordination mode of bidentate chelate (κ2-N,N′). The careful comparisons between Hpmt upon coordination and as free acid form demonstrated that the conformation flexibility might be responsible for its multiple coordination modes. The N–H⋯O and C–H⋯N hydrogen bonds constructed the 3D network, and this mainly agreed with the Hirshfeld surface analysis results. [ABSTRACT FROM AUTHOR]

In this work, the crystal structure of a natural specimen of the "Messbach-type" variscite from Tooele Co. (Utah, U.S.A.) was determined, and the dehydration process leading to the transition to a new AlPO SB 4 sb phase was monitored at high temperature. Crystal structure description of variscite 2O and comparison with variscite 1O Like variscite I 1O i , the variscite I 2O i crystal structure belongs to the family of framework 3D MT structures in which octahedra (M) and tetrahedra (T) are linked by bridging O atoms ([30]). The Al-coordination change from octahedral to tetrahedral that accompanies dehydration, clearly demonstrated by the SP 27 sp Al NMR data, confirms the removal of the Al-bound H SB 2 sb O molecules as the dehydration mechanism, transforming the variscite octahedral-tetrahedral framework to a purely tetrahedral framework. Keywords: Variscite; X-ray powder diffraction; charge-flipping; nuclear magnetic resonance; polytypism; AlPO4 EN Variscite X-ray powder diffraction charge-flipping nuclear magnetic resonance polytypism AlPO4 1385 1395 11 07/05/22 20220701 NES 220701 Introduction Interest in hydrated aluminophosphates and in compounds that derive from their dehydration spans a wide spectrum of disciplines. [Extracted from the article]

The results of variable-temperature magnetic studies show that the magnetic interaction between the Ln(III) ions in B 3 b , B 5 b and B 6 b is mainly due to antiferromagnetic coupling as well as the depopulation of the Stark levels. The larger I i value of B 5 b compared with that of B 6 b also indicates that the magnetic interactions between the Ln(III) ions in B 5 b are stronger than that in B 6 b . Keywords: crystal structure; ionic liquid; lanthanide-organic frameworks; magnetism EN crystal structure ionic liquid lanthanide-organic frameworks magnetism 149 155 7 03/11/22 20220201 NES 220201 1 Introduction The exploratory preparation and investigation of lanthanide-organic frameworks (LOFs) have captured increasing attention in the last decades, driven largely by their various coordination geometries, peculiar luminescent and magnetic properties, as well as potential applications in gas adsorption, catalysis and additives in metallurgy [[1]], [[2]], [[3]], [[4]], [[5]], [[6]]. Each Gd(III) ion is coordinated to eight oxygen atoms from six carboxylate groups of the BTB ligands and one terminal water molecule, resulting in a distorted bicapped trigonal prismatic coordination geometry (Figure 1). [Extracted from the article]

Adjacent silicon atoms are located in the centre of a 12-verticles polyhedron (Figure 2), but it consists of both europium and silicon, unlike a polyhedron around the Si-Si pairs in Eu SB 5 sb Si SB 3 sb . From the COHP data, it can be concluded that the strongest interactions occur between Si-Si atoms -iCOHP = 1.904 eV (for EuSi) and -iCOHP = 1.927 eV (for Eu SB 5 sb Si SB 3 sb ). 3 Results and discussion 3.1 Crystal structure of Eu 5 Si 3 and EuSi The crystallographic data and details of the data collection from the single crystal of Eu SB 5 sb Si SB 3 sb silicide are listed in Table 1. Keywords: crystal structure; electrochemistry; intermetallics; rare earth silicide; X-ray diffraction EN crystal structure electrochemistry intermetallics rare earth silicide X-ray diffraction 99 109 11 03/11/22 20220201 NES 220201 1 Introduction Generally, the construction of an isothermal section of a multicomponent system gives us knowledge about the possible formation of complex compounds. [Extracted from the article]

In the frame of the studies on the phase relations in the ternary system Li–Sb–Sn at 300 °C the new ternary phase Li8SbxSn3-x (0.3 ≤ x ≤ 1.0) was synthesized and characterized predominantly by single crystal and powder X-ray diffraction. The title compound crystallizes trigonally in the space group R 3 ‾m (no. 166), the lattice parameters are a = 4.6962(11) Å and c = 31.536(6) Å. The crystal structure of Li8SbxSn3-x is described in the present paper. In addition, the stereochemical and topological relations to the phases with similar composition, namely Li13Sn5, Li5Sn2 as well as cubic Li3Sb, besides native Li are discussed. [ABSTRACT FROM AUTHOR]

The new polymorph of Na2Mn3(SO4)4 was prepared via solid state reaction route in a powder form and its crystals were grown by self-flux method. The crystal structure was determined from single crystal X-ray diffraction data. This polymorph crystallizes with an orthorhombic symmetry, space group Pbca, with a = 9.8313(4), b = 8.7467(3), c = 29.6004(11) Å, V = 2545.38(17) Å3, Z = 8. Its structure refinement yielded the residual factors R(F) = 0.025 and wR(F2) = 0.065 for 227 parameters and 2605 independent reflections at 2σ(I) level. The use of group-subgroup schemes in the Bärnighausen formalism enabled an accurate comparison of the Pbca- and Cmc 21-polymorphs of Na2Mn3(SO4)4. Both polymorphs contain similar [Mn3(SO4)4]2− building blocks formed of Mn2O11 dimer units and MnO5 trigonal pyramids that are interconnected by sharing corners with the SO4 tetrahedra. However, the stacking of these building blocks along the longest axes of the Pbca- and Cmc 21-structures is different. This induces differences in the coordination of the sodium atoms and in the orientation of the SO4 tetrahedra. [ABSTRACT FROM AUTHOR]

The new polymorph of Na2Mn3(SO4)4 was prepared via solid state reaction route in a powder form and its crystals were grown by self-flux method. The crystal structure was determined from single crystal X-ray diffraction data. This polymorph crystallizes with an orthorhombic symmetry, space group Pbca, with a = 9.8313(4), b = 8.7467(3), c = 29.6004(11) Å, V = 2545.38(17) Å3, Z = 8. Its structure refinement yielded the residual factors R(F) = 0.025 and wR(F2) = 0.065 for 227 parameters and 2605 independent reflections at 2σ(I) level. The use of group-subgroup schemes in the Bärnighausen formalism enabled an accurate comparison of the Pbca- and Cmc 21-polymorphs of Na2Mn3(SO4)4. Both polymorphs contain similar [Mn3(SO4)4]2− building blocks formed of Mn2O11 dimer units and MnO5 trigonal pyramids that are interconnected by sharing corners with the SO4 tetrahedra. However, the stacking of these building blocks along the longest axes of the Pbca- and Cmc 21-structures is different. This induces differences in the coordination of the sodium atoms and in the orientation of the SO4 tetrahedra. [ABSTRACT FROM AUTHOR]

The new polymorph of Na2Mn3(SO4)4 was prepared via solid state reaction route in a powder form and its crystals were grown by self-flux method. The crystal structure was determined from single crystal X-ray diffraction data. This polymorph crystallizes with an orthorhombic symmetry, space group Pbca, with a = 9.8313(4), b = 8.7467(3), c = 29.6004(11) Å, V = 2545.38(17) Å3, Z = 8. Its structure refinement yielded the residual factors R(F) = 0.025 and wR(F2) = 0.065 for 227 parameters and 2605 independent reflections at 2σ(I) level. The use of group-subgroup schemes in the Bärnighausen formalism enabled an accurate comparison of the Pbca- and Cmc 21-polymorphs of Na2Mn3(SO4)4. Both polymorphs contain similar [Mn3(SO4)4]2− building blocks formed of Mn2O11 dimer units and MnO5 trigonal pyramids that are interconnected by sharing corners with the SO4 tetrahedra. However, the stacking of these building blocks along the longest axes of the Pbca- and Cmc 21-structures is different. This induces differences in the coordination of the sodium atoms and in the orientation of the SO4 tetrahedra. [ABSTRACT FROM AUTHOR]

C30H33F6N3S, triclinic, P1̄ (no. 2), a = 9.3012(5) Å, b = 10.2734(5) Å, c = 15.1850(8) Å, α = 81.982(2)°, β = 78.696(2)°, γ = 83.882(2)°, V = 1404.25(13) Å3, Z = 2, Rgt(F) = 0.0779, wRref(F2) = 0.2499, T = 293(2) K. [ABSTRACT FROM AUTHOR]

The crystal structure of hibbingite, natural γ-Fe2+2Cl(OH)3, a mineral of the atacamite group, was studied on a sample from the Oktyabr'sky mine, Norilsk district, Siberia, Russia. The structure was solved by direct methods based on single crystal X-ray diffraction data and refined to R=2.07% [520 reflections with I>2σ(I)]. The mineral is isostructural with atacamite and is orthorhombic, Pnma, a=6.3373(2), b=6.9892(2), c=9.3457(3) Å, V=413.95(3) Å3, Z=4. The structure contains Fe(1)(OH)4Cl2 octahedra which share Cl–O(1) edges to form chains running along the b axis and cross-linked by the chains of Fe(2)(OH)5Cl octahedra sharing O(2)–O(2) edges and running along the a axis. [ABSTRACT FROM AUTHOR]

The crystal structure of hibbingite, natural γ-Fe2+2Cl(OH)3, a mineral of the atacamite group, was studied on a sample from the Oktyabr'sky mine, Norilsk district, Siberia, Russia. The structure was solved by direct methods based on single crystal X-ray diffraction data and refined to R=2.07% [520 reflections with I>2σ(I)]. The mineral is isostructural with atacamite and is orthorhombic, Pnma, a=6.3373(2), b=6.9892(2), c=9.3457(3) Å, V=413.95(3) Å3, Z=4. The structure contains Fe(1)(OH)4Cl2 octahedra which share Cl–O(1) edges to form chains running along the b axis and cross-linked by the chains of Fe(2)(OH)5Cl octahedra sharing O(2)–O(2) edges and running along the a axis. [ABSTRACT FROM AUTHOR]

C31H50N2O2S, orthorhombic, P212121 (no. 19), a = 11.9922(9) Å, b = 16.7099(8) Å, c = 29.1262(16) Å, V = 5836.6(6) ų, Z = 8, Rgt(F) = 0.0654, wRref(F²) = 0.1230, T = 293(2) K. [ABSTRACT FROM AUTHOR]

Single crystals of solid chlorine (Cl2) were synthesized at room temperature and high pressure (HP, P = 1.45 GPa) in a diamond anvil cell (DAC). At these conditions Cl2 adapts the same structure as its corresponding low-temperature (LT) ambient pressure modification (T < 172 K), as concluded from HP single crystal diffraction experiments. Namely, it crystallizes in an orthorhombic symmetry (Cmce spacegroup) with Cl2 molecules forming monolayers parallel to the bc plane and this structure is preserved up to at least 64 GPa. The pressure of 1.45 GPa is to be considered as a solidification point of liquid Cl2 at room temperature. [ABSTRACT FROM AUTHOR]

C24H34N2OS, M = 398.59, orthorhombic, P212121 (no. 19), a = 11.0576(3) Å, b = 11.8406(3) Å, c = 18.0061(5) Å, V = 2357.51(11) Å3, Z = 4, Rgt(F) = 0.0334, wRref(F2) = 0.0780, T = 170 K. [ABSTRACT FROM AUTHOR]

C12H13ClN4OS, triclinic, P1 (no. 2), a = 7.875(4) Å, b = 13.165(6) Å, c = 13.295(6) Å, α = 97.199(8)°, β = 93.065(9)°, γ = 95.187(8)°, V = 1359.0(11) Å3, Z = 4, Rgt(F) = 0.0638, ωRref(F2) = 0.2097, T = 296(2) K. [ABSTRACT FROM AUTHOR]

C14H15F2NO2, monoclinic, P21/c (no. 14), a = 11.5474(10) Å, b = 11.0737(7) Å, c = 11.4311(10) Å, β = 114.979(11)°, V = 1325.0(2) Å3, Z = 4, Rgt(F) = 0.0738, wRref(F2) = 0.2034, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C14H15F2NO2, monoclinic, P21/c (no. 14), a = 11.5474(10) Å, b = 11.0737(7) Å, c = 11.4311(10) Å, β = 114.979(11)°, V = 1325.0(2) Å3, Z = 4, Rgt(F) = 0.0738, wRref(F2) = 0.2034, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C7H9F9O6S4, orthorhombic, P212121 (no. 19), a = 8.80180(10) Å, b = 10.96580(10) Å, c = 16.91360(10) Å, V = 1632.48(3) Å3, Z = 4, Rgt(F) = 0.0222, wRref(F2) = 0.0604, T = 100 K. [ABSTRACT FROM AUTHOR]

C18H17NO3, triclinic, P1 (no. 2), a = 7.3950(5) Å, b = 8.6697(5) Å, c = 11.6813(9) Å, α = 85.457(6)°, β = 76.712(6)°, γ = 82.759(5)°, V = 722.07(9) Å3, Z = 2, Rgt(F) = 0.0502, wRref(F2) = 0.1342, T = 99.9(3) K. [ABSTRACT FROM AUTHOR]

C32H30N8O5, orthorhombic, P212121 (no. 19), a = 9.1258(4) Å, b = 10.6225(5) Å, c = 30.1870(14) Å, V = 2926.3(2) Å3, Z = 4, Rgt(F) = 0.0367, wRref(F2) = 0.0837, T = 200 K. [ABSTRACT FROM AUTHOR]

C7H9F9O6S4, orthorhombic, P212121 (no. 19), a = 8.80180(10) Å, b = 10.96580(10) Å, c = 16.91360(10) Å, V = 1632.48(3) Å3, Z = 4, Rgt(F) = 0.0222, wRref(F2) = 0.0604, T = 100 K. [ABSTRACT FROM AUTHOR]

C18H17NO3, triclinic, P1 (no. 2), a = 7.3950(5) Å, b = 8.6697(5) Å, c = 11.6813(9) Å, α = 85.457(6)°, β = 76.712(6)°, γ = 82.759(5)°, V = 722.07(9) Å3, Z = 2, Rgt(F) = 0.0502, wRref(F2) = 0.1342, T = 99.9(3) K. [ABSTRACT FROM AUTHOR]

C32H30N8O5, orthorhombic, P212121 (no. 19), a = 9.1258(4) Å, b = 10.6225(5) Å, c = 30.1870(14) Å, V = 2926.3(2) Å3, Z = 4, Rgt(F) = 0.0367, wRref(F2) = 0.0837, T = 200 K. [ABSTRACT FROM AUTHOR]

C23H17F6NOS2, triclinic, P1̄ (no. 2), a = 8.379(3) Å, b = 11.509(2) Å, c = 12.817(3) Å, α = 71.272(3)°, β = 81.342(4)°, γ = 77.553(3)°, V = 1138.7(5) Å3, Z = 2, Rgt(F) = 0.0489, wRref(F2) = 0.1296, T = 296(2) K. [ABSTRACT FROM AUTHOR]

C28H20FN3O2S, triclinic, P1̄ (no. 2), a = 9.1325(7) Å, b = 11.5184(9) Å, c = 11.6535(9) Å, α = 74.682(7)°, β = 84.253(6)°, γ = 76.720(6)°, V = 1149.68(15) Å3, Z = 2, Rgt(F) = 0.0574, wRref(F2) = 0.1438, T = 296(2) K. [ABSTRACT FROM AUTHOR]

C42H42F2N2O6, monoclinic, P21/c (no. 14), a = 20.159(3) Å, b = 8.3357(10) Å, c = 21.372(3) Å, β = 103.130(3)°, V = 3497.4(8) Å3, Z = 4, Rgt(F) = 0.0414, wRref(F2) = 0.1083, T = 113(2) K. [ABSTRACT FROM AUTHOR]

C19H19Cl2NO5, orthorhombic, Pbca (no. 61), a = 12.6750(18) Å, b = 11.0927(17) Å, c = 28.400(4) Å, V = 3993.0(10) Å3, Z = 8, Rgt(F) = 0.0700, wRref(F2) = 0.2011, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C29H30CdCl2P2, orthorhombic, Pna21 (no. 33), a = 15.84368(4) Å, b = 8.46281(2) Å, c = 20.88054(8) Å, V = 2799.705(14) Å3, Z = 4, Rgt(F) = 0.0275, wRref(F2) = 0.0719, T = 100(2) K. [ABSTRACT FROM AUTHOR]

C23H17F6NOS2, triclinic, P1̄ (no. 2), a = 8.379(3) Å, b = 11.509(2) Å, c = 12.817(3) Å, α = 71.272(3)°, β = 81.342(4)°, γ = 77.553(3)°, V = 1138.7(5) Å3, Z = 2, Rgt(F) = 0.0489, wRref(F2) = 0.1296, T = 296(2) K. [ABSTRACT FROM AUTHOR]

C42H42F2N2O6, monoclinic, P21/c (no. 14), a = 20.159(3) Å, b = 8.3357(10) Å, c = 21.372(3) Å, β = 103.130(3)°, V = 3497.4(8) Å3, Z = 4, Rgt(F) = 0.0414, wRref(F2) = 0.1083, T = 113(2) K. [ABSTRACT FROM AUTHOR]

C19H19Cl2NO5, orthorhombic, Pbca (no. 61), a = 12.6750(18) Å, b = 11.0927(17) Å, c = 28.400(4) Å, V = 3993.0(10) Å3, Z = 8, Rgt(F) = 0.0700, wRref(F2) = 0.2011, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C29H30CdCl2P2, orthorhombic, Pna21 (no. 33), a = 15.84368(4) Å, b = 8.46281(2) Å, c = 20.88054(8) Å, V = 2799.705(14) Å3, Z = 4, Rgt(F) = 0.0275, wRref(F2) = 0.0719, T = 100(2) K. [ABSTRACT FROM AUTHOR]

The structure of hydrated calcium uranyl carbonate, mineral sharpite, has been solved for the first time. The structure is orthorhombic, space group Cmcm, with the unit-cell parameters a=4.9032 (4), b=15.6489 (11), c=22.0414 (18) Å, V=1691.2 (2) Å3, Z=4. The structure was refined from 858 unique observed reflections to a final R=5.48% (GOF=1.48). The structure is based upon infinite Ca2+-uranyl-carbonate sheets, which are unique among uranyl minerals and inorganic compounds. They result from edge-sharing of triangles, occupied by CO3, and hexagons that are occupied both by UO8 and Ca2+(H2O)3O5. Thus, topology of the sheets is identical to rutherfordine, (UO2)(CO3). Nevertheless Ca2+ is occupying one of the hexagons of the topology in sharpite. Sheets are extremely corrugated, stacked perpendicular to b and linked by H-bonds and Van Der Waals interactions, only. The ideal chemical formula of sharpite is {Ca(H2[3]O)3[(UO2)3(CO3)3.6O0.2]}0, Z=4; however, one of the C sites was found to be only partially occupied. The character of sharpite structure is probably a key to understand its scarcity of occurrences in Nature. [ABSTRACT FROM AUTHOR]

β-Y(BO2)3 was synthesized in a Walker-type multianvil module at 5.9 GPa/1000°C. The crystal structure has been elucidated through single-crystal X-ray diffraction. β-Y(BO2)3 crystallizes in the orthorhombic space group Pnma (no. 62) with the lattice parameters a = 15.886(2), b = 7.3860(6) and c = 12.2119(9) Å. Its crystal structure will be discussed in the context of the isotypic lanthanide borates β-Ln(BO2)3 (Ln = Nd, Sm, Gd-Lu). [ABSTRACT FROM AUTHOR]

Ni6B22O39 . H2O was synthesized in a high-pressure/ high-temperature reaction at 5 GPa/900°C. It crystallizes in the orthorhombic space group Pmn21 (no. 31) with the lattice parameters a = 7.664(2), b = 8.121(2) and c = 17.402(2) Å. The crystal structure is discussed with regard to the isotypic compounds M6B22O39 . H2O (M = Fe, Co) and the structurally related phase Cd6B22O39 . H2O. Furthermore, the characterization of Ni6B22O39 . H2O via X-ray powder diffraction and vibrational spectroscopy is reported. [ABSTRACT FROM AUTHOR]

Employing a capping agent during the synthesis of nanoparticles has been reported to play a role in controlling size and shape of the nanoparticles. Due to this reason, this study reports the synthesis of silver selenide nanoparticles using different environmentally friendly capping agents (green tea, glucose, ascorbic acid and chitosan) in order to investigate their effect on the size and shape of the nanoparticles. Transmission electron microscopy (TEM) results showed that the nanoparticles have different shapes (rods, spheres and cubes) with an average size of 8-96 nm depending on the capping agent used. Fourier transformer infrared (FTIR) spectroscopy confirmed that the capping of nanoparticles was successful, while X-ray diffraction (XRD) showed that the nanoparticles have an orthorhombic phase. [ABSTRACT FROM AUTHOR]

This review summarized and analyzed the structural parameters of 174 monomeric organoplatinum complexes with an inner coordination sphere of trans-PtP2C2. These complexes crystallized in four crystal systems: hexagonal (x2), orthorhombic (x13), triclinic (x76), and monoclinic (x84). These complexes, on the basis of the coordination mode of the respective donor ligands, can be divided into the seven sub-groups: Pt(PL)2(CL)2, Pt(PL)2(η2-C2L), Pt(η2-P2L)(CL)2, Pt(PL)(η2-P,CL)(CL), Pt(η2-P,CL)2, Pt(η2-P,C,PL)(CL), and Pt(η2-C,P,CL)(PL). The chelating ligands create 4-, 5-, 6-, 16-, 17-, 18-, and 19-membered rings. The total mean values of Pt-L bond distances are 2.055 Å (C) and 2.300 Å (P). There are examples that exist in two isomeric forms and are examples of distortion isomerism. The structural parameters of trans-PtP2C2 are discussed with those of cis-PtP2C2 derivatives. [ABSTRACT FROM AUTHOR]

C16H12N2O4, triclinic, P1̄ (no. 2), a = 10.7105(5) Å, b = 11.2685(5) Å, c = 13.0145(6) Å, α = 99.292(4)°, β = 109.607(4)°, γ = 96.771(4)°, V = 1435.01(12) Å3, Z = 4, Rgt(F) = 0.0427, wRref(F2) = 0.1124, T = 295(2) K. [ABSTRACT FROM AUTHOR]

C30H52O3, orthorhombic, P212121 (no. 19), a = 6.71147(14) Å, b = 16.6565(4) Å, c = 25.0815(6) Å, V = 2803.85(11) Å3, Z = 4, Rgt (F) = 0.0405, wRref (F2) = 0.1092, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C8H6ClIO2, orthorhombic, Pbcn (no. 60), a = 13.3204(7) Å, b = 7.2517(4) Å, c = 18.5627(9) Å, V = 1793.07(16) Å3, Z = 8, Rgt(F) = 0.0195, wRref(F2) = 0.0483, T = 173 K. [ABSTRACT FROM AUTHOR]

C23H13NO4, monoclinic, P21/n (no. 14), a = 11.6537(6) Å, b = 5.1315(2) Å, c = 26.8047(13) Å, β = 96.266(3)°, V = 1593.4(13) Å3, Z = 4, Rgt(F) = 0.0531, wRref(F2) = 0.1432, T = 90.0(5) K. [ABSTRACT FROM AUTHOR]

C29H29N3, triclinic, P1̄ (no. 2), a = 10.677(4) Å, b = 11.325(4) Å, c = 21.530(8) Å, α = 88.026(5)°, β = 75.646(5)°, γ = 71.504(4)°, V = 2389.0(15) Å3, Z = 4, Rgt(F) = 0.0663, wRref(F2) = 0.2002, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C8H6ClIO2, orthorhombic, Pbcn (no. 60), a = 13.3204(7) Å, b = 7.2517(4) Å, c = 18.5627(9) Å, V = 1793.07(16) Å3, Z = 8, Rgt(F) = 0.0195, wRref(F2) = 0.0483, T = 173 K. [ABSTRACT FROM AUTHOR]

C16H12N2O4, triclinic, P1̄ (no. 2), a = 10.7105(5) Å, b = 11.2685(5) Å, c = 13.0145(6) Å, α = 99.292(4)°, β = 109.607(4)°, γ = 96.771(4)°, V = 1435.01(12) Å3, Z = 4, Rgt(F) = 0.0427, wRref(F2) = 0.1124, T = 295(2) K. [ABSTRACT FROM AUTHOR]

C30H52O3, orthorhombic, P212121 (no. 19), a = 6.71147(14) Å, b = 16.6565(4) Å, c = 25.0815(6) Å, V = 2803.85(11) Å3, Z = 4, Rgt (F) = 0.0405, wRref (F2) = 0.1092, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C23H13NO4, monoclinic, P21/n (no. 14), a = 11.6537(6) Å, b = 5.1315(2) Å, c = 26.8047(13) Å, β = 96.266(3)°, V = 1593.4(13) Å3, Z = 4, Rgt(F) = 0.0531, wRref(F2) = 0.1432, T = 90.0(5) K. [ABSTRACT FROM AUTHOR]

C29H29N3, triclinic, P1̄ (no. 2), a = 10.677(4) Å, b = 11.325(4) Å, c = 21.530(8) Å, α = 88.026(5)°, β = 75.646(5)°, γ = 71.504(4)°, V = 2389.0(15) Å3, Z = 4, Rgt(F) = 0.0663, wRref(F2) = 0.2002, T = 293(2) K. [ABSTRACT FROM AUTHOR]