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One copper(II) coordination polymer (CP) [Cu(L)(L/(·H2O]n·(NO3)(2H2O) (1) (1D zig-zag chain) (where L stands for C6H5NO2 (isonicotinic acid) and L/ is C12H8N2·H2O (1,10-phenanthroline) has been synthesized following two different experimental approaches, the hydrothermal and sonochemical irradiation methods. Independently of the methodology used, the same crystalline phase is obtained for the complex. Single crystal X-ray analyses on compound 1 illustrated that Cu2+ ions are 5-coordinatedshowing the role of sonochemistry to modulate both morphology and dimensions of the resulting crystalline material. In order to study the effects of solvent and time of reaction on the formation of [Cu(L)(L/(·H2O]n·(NO3)(2H2O) (1) coordination polymer, some experiments were designed and four samples of 1 were synthesized by sonochemical process. Less time of reaction resulted in the formation of compound 1 microrods. With more time of reaction, various morphologies mainly microhexagonal of 1 were obtained. These four samples have been used as new precursors for the preparation of copper(II) oxide micro crystals via solid-state thermal decomposition process. Flower and rod micro crystals of copper(II) oxide could be prepared from 1. These micro crystals were characterized by IR spectroscopy, X-ray powder diffraction (XRD) and Scanning Electron Microscopy (SEM).

New 1D coordination polymer (CP); namely, [Cd(L)(N3)2]n (1) [L = 2-Picolylamine], was synthesized using branch tube method. Using sonochemical method led to the achievement of nano and micro structures of 1. These structures have been characterized by FT-IR spectroscopy, elemental analysis, powder X-Ray diffraction (P-XRD) and scanning electron microscopy (SEM). Crystal structure of (1) was characterized via the single-crystal X-ray diffraction technique. In the crystal structure of 1, the cadmium atoms are coordinated by six nitrogen atoms in a distorted octahedral geometry. The effects of different reaction times and solvent on morphology of structures was studied, and the results showed that formation of micro structures is dependent on reaction time and type of solvent.

Three new five-coordinate CuII complexes, [Cu(tpy)(phen-dione)](PF6)2, [Cu(phen)(phen-dione)Cl]PF6 and [Cu(bpy)(phen-dione)Cl]PF6 (tpy = 2,2′;6′,2″-terpyridine, phen = 1,10-phenanthroline and phen-dione = 1,10-phenanthroline-5,6-dione) have been prepared and characterized by elemental analysis, IR and UV–Vis spectroscopies and cyclic voltammetry. The complex of [Cu(tpy)(phen-dione)](PF6)2 crystallized with one molecule of acetonitrile. The ortep drawing of [Cu(tpy)(phen-dione)](PF6)2 · CH3CN shows that the coordination geometry around CuII is a distorted trigonal- bipyramid. Due to the steric hindrance of PF 6 - in the unit cell, the tpy ligands in each complex cation cannot interact in a π–π fashion. The effective magnetic moment (μeff) of the complexes was measured by the Evans method. The cyclic voltammograms at Pt disk electrode for these complexes display only one reversible Cu(II)/Cu(I) redox couple.

The first crystal structure of NiII phen-dione complex is reported. This compound is [Ni(bpy)2(phen-dione)](PF6)2 (bpy = 2,2′-bipyridine and phen-dione = 1,10-phenanthroline-5,6-dione). The complex has been characterized by elemental analysis, IR and electronic absorption spectroscopy and cyclic voltammetry. The electrochemical behavior and electronic spectrum of [Ni(bpy)2(phen-dione)](OAc)2 has also been studied in buffered solutions at pH between 1 and 8. ORTEP drawing of [Ni(bpy)2(phen-dione)](PF6)2 · 2CH3CN shows that the coordination geometry around the NiII is a distorted octahedron, with bite angles of 78.1–78.8° for all three bidentate ligands and the two pyridyl rings of the bpy ligands are nearly co-planar, as are the two pyridyl rings of phen-dione.

Several complexes of TPPMn–L, where TPP is the dianion of tetraphenylporphyrin and L is monoanion of 4-methylphenylcyanamide (4-Mepcyd) (1), 2,4-dimethylphenylcyanamide (2,4-Me2pcyd) (2), 3,5-dimethylphenylcyanamide (3,5-Me2pcyd) (3), 4-methoxyphenylcyanamide (4-MeOpcyd) (4), phenylcyanamide (pcyd) (5), 2-chlorophenylcyanamide (2-Clpcyd) (6), 2,5-dichlorophenylcyanamide (2,5-Cl2pcyd) (7), 2,6-dichlorophenylcyanamide (2,6-Cl2pcyd) (8), 4-bromophenylcyanamide (4-Brpcyd) (9), and 2,3,4,5-tetrachlorophenylcyanamide (2,3,4,5-Cl4pcyd) (10), have been prepared from the reaction of TPPMnCl and thallium salt of related phenylcyanamide. Each of the complexes has been characterized by IR, UV–Vis and 1 H NMR spectroscopies. 4-Methylphenylcyanamidotetraphenylporphyrin manganese(III) crystallized with one molecule of solvent CHCl3 in the triclinic crystal system and space group P 1 with the following unit cell parameters of: a = 11.596(6) A ˚ ; b = 11.768(9) A ˚ ; c = 17.81(2) A ˚ ; and a, b, c are 88.91(9)� , 88.16(7)� , 67.90(5)� , respectively; V = 2251(3) A ˚ 3 ; Z = 2. A total of 4234 reflections with I >2 r(I) were used to refine the structure to R = 0.0680 and Rw = 0.2297. The Mn(III) shows slightly distorted square pyramidal coordination with the 4-methylphenylcyanamide in the axial position, coordinated from nitrile nitrogen. The reduction of each of the TPPMn–L complexes was also examined in dichloromethane and spectroelectrochemical behavior of (1) was investigated and compared to TPPMnCl.

Crystallographic and magnetic studies have been performed on the complex, [{CuCl}2(μ-tppz)][PF6]2, where tppz is 2,3,5,6-tetra-2-pyridinylpyrazine. The crystal structure revealed an infinite, ionic chain wherein Cu(II) ions are respectively above and below the plane of the pyrazine moiety of the bridging tppz ligand with the pyridine moieties moving out of the pyrazine plane in order to coordinate to Cu(II). Each chloride ligand bonds equatorially to Cu(II) in a [{CuCl}2(μ-tppz)]2+ ion and axially to a neighboring [{CuCl}2(μ-tppz)]2+ ion so as to form a one-dimensional chain in the solid state. The temperature-dependent magnetic susceptibilitity could be satisfactorily fitted by using a modified Bleaney–Bowers expression (for H = −JSa · Sb J = −5.6 cm−1 and g = 2.16) where the exchange interaction is suggested to involve the orbitals of the tppz ligand.

Several new cobalt complexes, cis-[(bpy)2Co(L)2]PF6, where bpy=2,2′-bipyridine and L=monoanion of phenylcyanamide (pcyd), 2-chlorophenylcyanamide(2-Clpcyd), 2,5-dichlorophenylcyanamide(2,5-Cl2pcyd), 2-methylphenylcyanamide(2-Mepcyd) and 2,4-dimethylphenylcyanamide(2,4-Me2pcyd) have been prepared and characterized by UV–Vis, IR and 1H NMR spectroscopies. The complex of cis-[(bpy)2Co(2-Clpcyd)2]PF6 crystallized with one third of a molecule of acetonitrile with empirical formula of C34.67H25N8.33F6Cl2PCo, in a triclinic crystal system and space group of P 1 with a=10.937(1) A, b=12.716(1) A, c=13.452(1) A, β=91.019(4)°, V=1789.3(3) A3, and Z=2. The structure was refined by using 5385 Mo Kα reflections with I>3σ(I) and R factor of 0.065. These Co-complexes possess low-energy ligand to metal charge-transfer bands associate with Co(III)NCN chromophore. Comparison between the properties of cis-[Ru(bpy)2(L)2]PF6 and cis-[Co(bpy)2 (L)2]PF6 complexes shows the same behavior in the covalency of the MNCN π-bond.