FUNCTIONALIZED CYCLOPENTADIENYL LIGANDS .3. PREPARATION OF COBALT HALF-SANDWICH COMPLEXES WITH INTRAMOLECULAR C=C BOND COORDINATION

被引：36

作者：

OKUDA, J

ZIMMERMANN, KH

机构：

[1] Anorganisch-Chemisches Institut, Technischen Universität München, Garching, D-8046

来源：

CHEMISCHE BERICHTE | 1990年 / 123卷 / 08期

关键词：

Cobalt complexes; Cyclopentadienyl ligand; functionalized; Half‐sandwich complexes; Intramolecular CC bond coordination; Reductive complexation;

D O I：

10.1002/cber.19901230809

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermolysis of [1‐(3‐butenyl)‐2,3,4,5‐tetramethylcyclopentadienyl]carbonyldiiodocobalt, (η5‐C5Me4CH2CH2CHCH2)‐Co(CO)I2 (2), in boiling octane affords the dimeric diiodide [(η5‐C5Me4CH2CH2CHCH2)‐COI2]2 (3) without any interference of the 3‐butenyl chain with the cobalt center. 2 reacts with various two‐electron ligands L (LP(OMe)3, P(OPh)3, PPh3, PMe3, PMe2Ph, tBuNC] to give a series of cobalt(III) complexes of the general formulae (η5‐C5Me4CH2CH2CHCH2)‐Co(L)I2 (4–9). Sodium amalgam reduction of these “open‐chain” complexes 4–9 yields novel cobalt(1) complexes containing an intramolecularly coordinated CC bond (η5:η2‐C5Me4CH2CH2CHCH2)‐Co(L). For LCO (12), P(OMe)3 (13), and P(OPh)3 (14) low‐melting crystals are isolated and fully characterized by analytical and spectroscopic methods. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：1641 / 1648

页数：8

共 42 条

[1]

BAILEY WI, 1979, J ORGANOMET CHEM, V165, P301

[2] PENTAMETHYLCYCLOPENTADIENYLCOBALTBIS(ETHYLENE) - A VERSATILE REAGENT IN ORGANOCOBALT SYNTHESIS [J].