FORMATION-CONSTANTS OF SOME PHOSPHINE AND PHOSPHITE ADDUCTS OF (ETA(5)-CYCLOPENTADIENYL) (SUBSTITUTED 1,2-ETHYLENEDICHALCOGENOLATO)COBALT(III) COMPLEXES AND THEIR H-1, C-13 AND P-31 NMR-SPECTRA

被引：19

作者：

KAJITANI, M ^{[1
]}

IGARASHI, A ^{[1
]}

HATANO, H ^{[1
]}

AKIYAMA, T ^{[1
]}

SUGIMORI, A ^{[1
]}

MATSUMOTO, S ^{[1
]}

IGUCHI, Y ^{[1
]}

BOENNEMANN, H ^{[1
]}

SHIMIZU, K ^{[1
]}

SATO, GP ^{[1
]}

机构：

[1] MAX PLANCK INST KOHLENFORSCH, W-4330 MULHEIM, GERMANY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 485卷 / 1-2期

关键词：

COBALT; CYCLOPENTADIENYL; SULFUR; NUCLEAR MAGNETIC RESONANCE; PHOSPHINE; THIOLATE;

D O I：

10.1016/0022-328X(94)24762-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The formation constants of the phosphine and phosphite adducts of several (eta(5)-cyclopentadienyl) (substituted 1,2-ethylenedithiolato)cobalt(III) complexes in acetonitrile were determined spectrophotometrically. The complexes with more electron-withdrawing substituents on the ditholate ligand form more stable adducts. The NMR chemical shifts (H-1, C-13 and P-31) of the complexes, phosphines, phosphites and adducts were measured in CDCl3. The shifts were changed on adduct formation. These changes indicate that the phosphines act as sigma-donors and the phosphites as pi-acceptors and that the cobaltadithiolene ring, which is aromatic in the unbound complex, becomes olefinic in the adduct.

引用

页码：31 / 36

页数：6

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