78 results on '"Wu, Daxu"'
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2. A vanadium-containing iron-sulfur cluster with a V2Fe2S4 cubane-like core. Synthesis, structure, and characterization of (Et4N)(V2Fe2S4(Me2dtc)5)
3. Coordination behaviour of an unsymmetrical dithiolate with transition metals. Syntheses and properties of propane-1,2-dithiolate complexes and structures of [Ph4As]2[Mn2(1,2-pdt)4] and [Ph4P]2[Ni3(1,2-pdt)4]·2MeCN
4. V 4S 4 cubane-like cluster: synthesis, structure and properties of (Et 4N)[V 4S 4(C 4H 8dtc) 6]
5. Synthesis and characterization of (Et4N)4(MoS4Cu1oCl12): a polynuclear molybdenum-copper cluster containing a central tetrahedral MoS4 encapsulated by octahedral Cu6 and tetrahedral Cu4 arrays
6. Structure and characterization of a mononuclear Fe II dialkyldithiocarbamate complex Fe(OC 4H 8dtc) 2(DMF)
7. Trinuclear vanadium dialkyldithiocarbamate complexes. Synthesis, structure and spectroscopic characterization of [Et 4N][V 3(μ 3-S)(η 2-μ-S 2) 3(Et 2dtc) 3] · 2CH 3CN
8. Synergism in molybdenum iron sulphur cluster compounds. Synthetic, structural, magnetic, cyclic voltammetric evidence and the reaction of dicubane clusters containing [MoFe3S4] unit
9. V4S4 cubane-like cluster: synthesis, structure and properties of (Et4N)[V4S4(C4H8dtc)6]
10. Bis(1-acetonylpyridinium) pyridinium hexaiodobismuth(III)
11. A new access to palladium–phosphine chemistry. Formation of polynuclear palladium compounds via the oxidation of ligands in simple palladium(II) complexes
12. SYNTHESES AND STRUCTURES OF CLUSTER COMPOUNDS CONTAINING WSe4Cun (n = 3,4) CORES WITH DIALKYLDITHIOCARBAMATE LIGANDS
13. Structure and characterization of a mononuclear FeII dialkyldithiocarbamate complex Fe(OC4H8dtc)2(DMF)
14. Trinuclear vanadium dialkyldithiocarbamate complexes. Synthesis, structure and spectroscopic characterization of [Et4N][V3(μ3-S)(η2-μ-S2)3(Et2dtc)3]·2CH3CN
15. Studies on the Synthetic System of V/Ag/S Cluster Compounds and Structural Characterizations of V2AgS4, V2Ag2S4, and V2O2(μ-S)2 Complexes
16. Syntheses and spectroscopic characterizations of the compounds containing univalent coinage metal and tetraselenomolybdate. Crystal structure of [MoSe4(AuPPh3)2]
17. A tetranuclear silver complex with dppm and i-mnt ligands. Synthesis and structural characterization of [Ag4(μ-dppm)4(μ4 i-mnt)2] · 0.5 DMF (i-mnt 2,2-dicyano-1,1-ethylenedithiopate; dppm bis(diphenylphosphino)methane)
18. Chemistry of the Tetraselenomolybdate Anion: Syntheses, Spectroscopic Results, and Structural Characterizations of Polynuclear Mo−Cu−Se Compounds Containing Thiolate Ligands
19. Synthesis, structure and characterization of heterometal VFe3S4 cubane-like cluster compound (Et4N)[VFe3S4(Et2dtc)4]
20. Synthesis and structural characterization of a linear copper(I) tetrathiomolybdate complex containing the Me2dtc− ligand, (Et4N)2[MoS4(CuMe2dtc)2]
21. A Vanadium-Containing Iron−Sulfur Cluster with a V2Fe2S4 Cubane-like Core. Synthesis, Structure, and Characterization of (Et4N)[V2Fe2S4(Me2dtc)5]
22. Copper complexes derived from 1-(2-carboxybenzoyl)thiosemicarbazide (H3L): syntheses, characterization and crystal structure of [Cu3L2(Py)6](HIm)(H2O)2
23. Chiral phosphine ligands derived from sugars-6. syntheses and spectroscopic studies on rhodium complexes with a new type of chiral phosphines
24. Synthesis and Characterization of (Et4N)4[MoS4Cu10Cl12]: A Polynuclear Molybdenum−Copper Cluster Containing a Central Tetrahedral MoS4Encapsulated by Octahedral Cu6and Tetrahedral Cu4Arrays
25. A tetranuclear cobalt complex with mercaptopyridine N-oxide as ligand. Synthesis and crystal structure of [Na3Co4(μ3-O)2-(mpo)8(DMF)4]Br·2DMF (mpo = 2-mercaptopyridine-N-oxide)
26. Study on an Assembly System Including Tetrathiovanadate. Syntheses and Structural Characterizations of V2Cu2S4 Cubane-Like Clusters and VS4Cu4 Bimetallic Aggregates
27. Synthesis and molecular structure of the mixed polymeric cobalt compound [Co3(SCH2CH2S)3(PEt3)3]2[Co2Cl4(µ-O2SEt2)2]
28. Heterobimetallic aggregates of copper(I) with thiovanadate. Syntheses and characterizations of (Et4N)3[VS4Cu4(OC4H8dtc)n(PhS)4-n] (n = 0, 1, 2)
29. Formation of a bridging sulfide in chlorotris(1,2-ethanedithiolato)(.mu.3-sulfido)tris(triphenylphosphino)tetracobalt via disruption of the carbon-sulfur bond from dithiolate
30. Triply bridged (O,O′,S)-binuclear oxomolybdenum(V) complexes containing o-mercaptophenol ligands
31. Syntheses, structures and properties of tri-n-butylphosphine cobalt complexes containing o-benzenedithiolate ligands in unusual co-ordination modes
32. Syntheses and electrochemistry of some transition metal complexes with 2-mercaptopyridine N-oxide and crystal structure of bis(2-mercaptopyridine N-oxide)nickel(II)
33. A novel iron-sulfur-thiolate basket cluster: synthesis, structure, and properties of Fe6S5(.mu.-SPh)(P-n-Bu3)4(SPh)2
34. Syntheses, structures, and properties of vanadium, cobalt, and nickel compounds with 2-mercaptophenol
35. Synthesis, Structure, and Properties of Tetraethylammonium Bis[Bis(2-Oxyphenyl)-Disulfide-O,O',s] Manganese(III)
36. Structural chemistry of molybdenum-iron-sulfur cluster compounds with a single-cubane [MoFe3S4]n+ (n = 4-6) core and crystal structure of [MoFe3S4(Me2dtc)5].cntdot.2CH2Cl2
37. Synthesis and crystal structure of a square planar tetra-cobalt complex with two quadruply-bridging sulphur atoms [(η5-Cp)4Co4(µ4-S)2]
38. Syntheses and structural characterizations of a series of Mo(W)–Cu–S compounds of bidentate dialkyldithiocarbamate ligands. Crystal structure of [NEt4]2[Mo2Cu5S6O2(Me2NCS2)3]
39. SYNTHESES AND STRUCTURES OF CLUSTER COMPOUNDS CONTAINING WSe 4 Cu n ( n = 3,4) CORES WITH DIALKYLDITHIOCARBAMATE LIGANDS.
40. A new access to palladiumphosphine chemistry. Formation of polynuclear palladium compounds via the oxidation of ligands in simple palladium(II) complexes
41. Synergism in molybdenum iron sulphur cluster compounds. Synthetic, structural, magnetic, cyclic voltammetric evidence and the reaction of dicubane clusters containing [MoFe3S4] unit
- Abstract
Dicubane cluster compounds (Et
4 N)4 [Mo2 Fe7 S8 (SR)12 ] (2A) (R=Ph,a;o-tolyl,b;m-tolyl,c;p-tolyl,d) were made by reaction of (Et4 N)2 [Fe4 (SR)10 ] (1) with (Et4 N)2 MoS4 in MeCN at room temperature. The structure,1 Hn.m.r.,57 Fe Mössbauer spectrum, magnetic susceptibility and cyclic voltammogram are described. (Et4 N)3 [Mo2 Fe6 S8 Cl6 (SR)3 ] (3) (R=Ph,a;m-tolyl,b) was obtained from the reaction of (2Aa) or (2Ac) with acetyl chloride in MeCN. This is the first time that compound of structural type (2) is transformed into that of structural type (3) by chemical conversion. Compound (2Aa) crystallizes in the triclinic space group P!["]("/fulltext-image.asp?format=htmlnonpaginated&src=T1282PPQ104K24R6_html\11243_2005_Article_BF01092584_TeX2GIFIE1.gif")
with Z=1 and unit cell dimensionsa=12.775(4),b=13.076(3), andc=20.576(4) Å; the structure was refined to R=7.7% using 4031 unique data with I>3ϖ(Io ). Compound (2Ac) 2THF crystallizes in the monoclinic space group P21 /n with Z=2 and unit cell dimensionsa=18.022(2),b=18.375(2) andc=22.254(3) Å; the structure was refined to R=6.4% using 5173 unique data with I>3ϖ(Io ). Compound (3b) crystallizes in the hexagonal space groupP63 /m with Z=2 and unit cell dimensionsa=b=16.827(3) andc=15.951(16) Å; the structure was refined to R=4.9% using 1296 unique data with I>3ϖ(Io ). Its characteristics are discussed and compared with those of known compounds. The ratios of core volumes S4 /M4 are within the 2.34–2.40 range for core oxidation level [MoFe3 S4 ]3+ indicating that distortion of the cubane core is a general phenomenon. Different thiolato ligands induce significant changes of structural parameters only at the Fe(SR)6 region for compound (2A) while terminal chlorides induce changes over the whole molecule of (3b) with the latter structure more comparable to [Mo2 Fe6 S8 (SPh)9 ]5− (3f) with [MoFe3 S4 ]2+ core than to [Mo2 Fe6 S8 (SPh)9 ]3− (3d). The isotropic shifts of (2A) originate mainly from π-contact interaction. Both1 H n.m.r. spectra and magnetic susceptibility measurements indicate practically no magnetic interaction among the three magnetic centres,i.e. a Fe(SR)6 bridge and two [MoFe3 S4 (SR)3 ] units. CV studies showed that the reduction of cubane unit having aromatic thiolates is easier than that having aliphatic thiolates as the aliphatic group is electron-donating. In addition, the very similar differences of Ep,c for first and second cubane units in compounds (2A) and in (3d) and (3e) imply that the effect of the first reduced unit [MoFe3 S4 ]2+ upon the second unit [MoFe3 S4 ]3+ is very similar in the two types of dicubane cluster compounds. Synergism in Mo−Fe−S cluster compounds is thus proposed to play an important role in their structural correlation with reactivities and must function in nitrogenase.
42. Synthesis, structure and characterization of heterometal VFe3S4cubane-like cluster compound (Et4N)[VFe3S4(Et2dtc)4]
43. Synthesis, structre and spectroscopy of a new dinuclear ironsulfur compound (Et4N)2[Fe2(1,2-OSC6H4)4]·2CH3CN
44. Electrochemical studies of molybdate and thiomolybdates
45. Bis(1‐acetonylpyridinium) pyridinium hexaiodobismuth(III)
46. Copper complexes derived from 1-(2-carboxybenzoyl)thiosemicarbazide (H 3L): syntheses, characterization and crystal structure of [Cu 3L 2(Py) 6](HIm)(H 2O) 2
47. Synthesis, structre and spectroscopy of a new dinuclear ironsulfur compound (Et 4N) 2[Fe 2(1,2-OSC 6H 4) 4]·2CH 3CN
48. Synthesis and structural characterization of a linear copper(I) tetrathiomolybdate complex containing the Me 2dtc − ligand, (Et 4N) 2[MoS 4(CuMe 2dtc) 2]
49. A tetranuclear cobalt complex with mercaptopyridine N-oxide as ligand. Synthesis and crystal structure of [Na 3Co 4( μ3-O) 2-(mpo) 8(DMF) 4]Br·2DMF (mpo = 2-mercaptopyridine- N-oxide)
50. A tetranuclear silver complex with dppm and i-mnt ligands. Synthesis and structural characterization of [Ag 4( μ-dppm) 4( μ4 i-mnt) 2] · 0.5 DMF (i-mnt 2,2-dicyano-1,1-ethylenedithiopate; dppm bis(diphenylphosphino)methane)
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