Some chemistry of half-sandwich η-arene tungsten compounds
作者:Malcolm L. H. Green、Andrew K. Hughes、Paul Lincoln、Jesus J. Martin-Polo、Philip Mountford、Andrea Sella、Luet-Lok Wong、Judith A. Bandy、Thomas W. Banks、Keith Prout、David J. Watkin
DOI:10.1039/dt9920002063
日期:——
give [W(η-C6H5Me)(PMe3)3H]BF4 and [W(η-C6H5Me)SiMe(CH2PMe2)3}H]BF4, respectively. Reaction of [W(η-C6H5Me)(PMe3)3] with HCl gas gives the diprotonated cation [W(η-C6H5Me)(PMe3)3H2]2+. Treatment of [W(η-C6H5Me)(η-C3H5)(dmpe)]PF6[dmpe = 1,2-bis(dimethylphosphino)ethane] with LiAlH4 gives the η-methylcyclohexadienyl complex [W(η5-C6H6Me)(η-C3H5)(dmpe)], as a mixture of inseparable isomers. These have been
由[W(η)制备化合物[W(η- C6 H 5 Me)(PMe 3)3 ]和[W(η- C6 H 5 Me)SiMe(CH 2 PMe 2)3 }]。 -C 6 H 5 Me)2 ]和叔膦。它们被NH 4 BF 4质子化,得到[W(η- C6 H 5 Me)(PMe 3)3 H] BF 4和[W(η- C6 H 5 Me)SiMe(CH 2 PMe 2)3} H] BF 4。[W(η- C6 H 5 Me)(PMe 3)3 ]与HCl气体反应,得到双质子化阳离子[W(η- C6 H 5 Me)(PMe 3)3 H 2 ] 2+。的治疗[W(η-C 6 H ^ 5 Me)的(η-C 3 H ^ 5)(DMPE)] PF 6 [DMPE = 1,2-双(二甲基膦基)乙烷]上LiAlH 4给出了η-methylcyclohexadienyl络合物[ W(η 5 -C 6 ħ 6 Me)的(η-C
Low-valent niobium chemistry: synthesis of bent bis-arene niobium alkyl and halide complexes, half-sandwich mono-arene niobium tertiary phosphine compounds, and related studies
作者:Malcolm L. H. Green、D. O'Hare、John G. Watkin
DOI:10.1039/c39890000698
日期:——
The syntheses of the new compounds [Nb(η-C6H5Me)2X](X = Me, Ph, Br, I), [Nb(η-C6H5Me)(PMe3)3X (X = H, SiMe3), [Nb(η-C6H5Me)(η5-C7H9)(PMe3)], and [Nb(η-C7H7)(CO)2(PMe3)] are described.
新化合物[Nb(η- C6 H 5 Me)2 X](X = Me,Ph,Br,I),[Nb(η- C6 H 5 Me)(PMe 3)3 X( X = H,森达3),[Nb的(η-C 6 H ^ 5 Me)的(η 5 -C 7 ħ 9)(PME 3)]和[Nb的(η-C 7 H ^ 7)(CO)2(说明了PMe 3)]。
Formation of a di-iron-µ-vinylidine group from ethylene: synthesis and crystal structure of {MeSi(CH<sub>2</sub>PMe<sub>2</sub>)<sub>3</sub>}Fe(µ-CCH<sub>2</sub>)(µ-H)<sub>2</sub>Fe{(PMe<sub>2</sub>CH<sub>2</sub>)<sub>3</sub>SiMe}
作者:James M. Boncella、Malcolm L. H. Green、Dermot O'Hare
DOI:10.1039/c39860000618
日期:——
Treatment of (η4-C6H6)(tmps)Fe, tmps = MeSi(CH2PMe2)3, with ethylene, or sodium amalgam reduction of (tmps)FeCl2 in the presence of ethylene, gives the di-iron-µ-vinylidene compound (tmps)Fe(µ-CCH2)(µ-H)2Fe(tmps) whose crystal structure has been determined.
Triple bonds of niobium with silicon, germaniun and tin: the tetrylidyne complexes [(κ<sup>3</sup>-tmps)(CO)<sub>2</sub>NbE–R] (E = Si, Ge, Sn; tmps = MeSi(CH<sub>2</sub>PMe<sub>2</sub>)<sub>3</sub>; R = aryl)
作者:Alexander C. Filippou、David Hoffmann、Gregor Schnakenburg
DOI:10.1039/c7sc02708g
日期:——
of the niobium-centered nucleophile (NMe4)[Nb(CO)4(κ2-tmps)] (1) (tmps = MeSi(CH2PMe2)3) with a suitable organotetrel(II)halide. Compound 1 was obtained from (NMe4)[Nb(CO)6] and the triphosphane tmps by photodecarbonylation. Reaction of 1 with the disilene E-Tbb(Br)SiSi(Br)Tbb in the presence of 4-dimethylaminopyridine afforded selectively the red-brown silylidyne complex [(κ3-tmps)(CO)2NbSi–Tbb] (2-Si