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唐良富, Liang-Fu Tang*, Wen-Li Jia, Zhi-Hong Wang, Jian-Fang Chai, Ji-Tao Wang
Journal of Organometallic Chemistry 637-639 (2001) 209-215,-0001,():
-1年11月30日
ngsten complexeshave one reversible couple corresponding to the ferrocenyl group and one irreversible oxidation process for the molybdenum ortungsten center. The crystal structures of 3-ferrocenylpyrazole pentacarbonyltungsten (3) and 3-methyl-5-ferrocenylpyrazolepentacarbonyltungsten (6) are determined by X-ray diffraction method, indicating that both 3(5)-ferrocenylpyrazole and3(5)-methyl-5(3)-ferrocenylpyrazole act as a monodentate ligand, and the central metal of W is six-coordinate with a quasi-octahedralcoordination geometry in both complexes. Complex 3 is linked into a one-dimensional chain in solid through intermolecularhydrogen bonds formed by metal carbonyl as hydrogen bond acceptors, while complex 6 forms a dimer by similarintermolecular hydrogen bond interactions. The N-H…O distances in complexes 3 and 6 are 2.932(11) and 2.900 A, respectively. All new compounds have been characterized by elemental analyses, IR, 1H-NMR. 13C-NMR spectra of molybdenum and tungstencomplexes have also been determined.
Ferrocenylpyrazole, Metal carbonyl complexes, Cyclic voltammetry, Crystal structures
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唐良富, Liang-Fu Tang, *, †, Wen-Li Jia, Da-Tong Song, Zhi-Hong Wang, Jian-Fang Chai, † and Ji-Tao Wang
Volume 21, Number 3, February 4, 2002,-0001,():
-1年11月30日
Treatment of triarylstannyl-bis (3,4,5-trimethylpyrazol-1-yl) methane, Ar3SnCH (3,4,5-Me3Pz)2 (Ar) phenyl or p-tolyl), with W (CO) 5THF results in the oxidative addition of the tin-carbon (sp3) bond to the tungsten (0) center to yield the heterodinuclear complexes CH (3,4,5-Me3Pz) 2 (CO) 3W-SnAr3, in which four-membered metallacycles are found and bis (3,4,5-trimethylpyrazol-1-yl) methide acts as a tridentate monoanionic 3-[N,C,N] chelating ligand. purity synthetic methods for poly (pyrazol-1-yl) alkanes have been explored. 5b, 7 In recent years, modification of the central carbon atom by the organic functional groups to form heteroscorpionate ligands has also been successful. These new heteroscorpionate ligands usually have asymmetric N2O, 8N2S, 9or N3O10 coordination environments. Recently, replacement of the central carbon atom by the silicon atom to form poly (pyrazol Poly (pyrazol-1-yl) alkanes were first reported to form transition-metal complexes by Trofimenko in 1970.1 After that, and especially after an improved synthetic method was developed by Julia et al.,2 the coordination chemistry of these ligands has received increasing attention. 3, 4 A number of main-group5 and transitionmetal6 complexes containing poly (pyrazol-1-yl) alkanes have been synthesized and characterized in recent years. To advance the development of poly (pyrazol-1-yl) alkane chemistry, some new higher yield and higher
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唐良富, Liang-Fu Tang, *, †, Jian-Fang Chai, Zhi-Hong Wang, ‡, Wen-Li Jia, † and Ji-Tao Wang§
Organometallics 2002, 21, 3675-3677,-0001,():
-1年11月30日
Reaction of the dianion {p-[(CO)3MoC5H4C-(O)]2C6H4}2- with PhSnCl3 yields the tetranuclear heterodimetallic complex p-[(PhCl2Sn)(CO)3MoC5H4C-(O)]2C6H4 (1). Treatment of complex 1 with Na2S
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