HALF-SANDWICH ISOCYANIDE, PHOSPHINE, METHYL AND PHOSPHANIDO PENTAMETHYLCYCLOPENTADIENYLNIOBIUM(V) COMPLEXES

被引：13

作者：

ALCALDE, MI ^{[1
]}

DELAMATA, J ^{[1
]}

GOMEZ, M ^{[1
]}

ROYO, P ^{[1
]}

SANCHEZ, F ^{[1
]}

机构：

[1] UNIV ALCALA DE HENARES, DEPT QUIM INORGAN, E-28871 ALCALA DE HENARES, SPAIN

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 492卷 / 02期

关键词：

NIOBIUM; PENTAMETHYLCYCLOPENTADIENYL; ISOCYANIDE; PHOSPHINE; PHOSPHANIDO; HALF-SANDWICH CPDS;

D O I：

10.1016/0022-328X(94)05289-N

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

[NbCp*Cl4] (Cp* = eta(5)-C(5)Me(5)) reacts with one molar equivalent of isocyanides and phosphines to give pseudo-octahedral adducts [NbCp*Cl-4 . L], (L = 2,4,6-Me(3)C(6)H(2)NC, 1; PMe(3), 2; PMe(2)Ph, 3; PMePh(2), 4) and the dinucIear complex [(hTbCp*Cl-4)(2)(mu-dmpe)], 5. Reactions of [NbCp*Cl-4] with appropriate amounts of MgClMe yield the corresponding dimethyl [NbCp*Cl(2)Me(2)], 6, and tetramethyl [NbCp*Me(4)], 7 derivatives. Similarly, when [{NbCp*Cl-3}(2)(mu-O)] and 3 are treated with the allylating magnesium reagent, [{NbCp*Me(3)}(2)(mu-O)], 8, and [NbCp*Cl(3)Me(PMe(2)Ph)], 9, are obtained in high yields. A new phosphanido-niobium(V) complex [NbCp*Cl-3(PPh(2))] 10, is formed in the reaction of the starting tetrachloro complex with one equivalent of LiPPh(2). All the complexes were characterized by IR and NMR spectroscopy, and most of them were studied by mass spectrometry.

引用

页码：151 / 155

页数：5

共 39 条

[1]

Fowles, Rice, Wilkins, Journal of the Chemical Society, Dalton Transactions, (1972)

[2]

Fowles, Rice, Wilkins, Journal of the Chemical Society, Dalton Transactions, (1973)

[3]

Fowles, Rice, Wilkins, Journal of the Chemical Society, Dalton Transactions, (1974)

[4]

Riess, Scampuzzi, J. Chem. Soc., Dalton Trans., (1973)

[5]

Mavat, Wilkinson, J. Chem. Soc., Dalton Trans., (1973)

[6]

Meakin, Schrock, Journal of the American Chemical Society, 96, (1974)

[7]

Scampuzzi, Wilkinson, Williamson, J. Organomet. Chem., 77, (1974)

[8]

Bunker, de Cian, Green, Journal of the Chemical Society, Chemical Communications, (1977)

[9]

Bunker, de Cian, Green, Siganporia, J. Chem. Soc., Chem. Commun., (1980)

[10]

Herrmann, Kalcher, Biersack, bernal, Creswick, Chemische Berichte, 114, (1981)

← 1 2 3 4 →