Parallel metallocenes of germanium, tin, and lead

被引：31

作者：

Constantine, SP ^{[1
]}

Cox, H ^{[1
]}

Hitchcock, PB ^{[1
]}

Lawless, GA ^{[1
]}

机构：

[1] Univ Sussex, Sch Chem Phys & Environm Sci, Chem Lab, Brighton BN1 9QJ, E Sussex, England

来源：

ORGANOMETALLICS | 2000年 / 19卷 / 03期

关键词：

D O I：

10.1021/om990884z

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of 2 equiv of LiCps (Cp-s = C5Me4(SiMe2But)) with GeCl2. diox, SnCl2, or PbCl2 in ethereal solvents affords the metallocenes [M(eta(5)-Cp-s)(2)] (M = Ge, 1; M = Sn, 2; M = Pb, 3) in 96, 89, and 84% yields, respectively. A single-crystal X-ray structural analysis of each reveals that, for the first time, the cyclopentadienyl rings are parallel for all three metallocenes. Both solid- and solution-state multinuclear NMR spectroscopic data for 2 and 3 are reported. An examination of 1-3 using DFT has also been performed, and in the case of 1 a comparison with its C5H5 analogue has been carried out.

引用

页码：317 / 326

页数：10

共 45 条

[1]

ALMOF J, 1983, ACTA CHEM SCAND, V37, P131

[2]

[Anonymous], ADV ORGANOMET CHEM

[3]

[Anonymous], [No title captured], DOI DOI 10.1016/0021-9991(92)90277-6

[4] ''Paddle-wheel'' tris(cyclopentadienyl)tin(II) and -lead(II) complexes: Syntheses, structures, and model MO calculations [J].

Armstrong, DR ;

Duer, MJ ;

Davidson, MG ;

Moncrieff, D ;

Russell, CA ;

Stourton, C ;

Steiner, A ;

Stalke, D ;

Wright, DS .

ORGANOMETALLICS, 1997, 16 (15) :3340-3351

[5] X-RAY CRYSTAL-STRUCTURES OF BIS(CYCLOPENTADIENYL)TIN AND BIS(PENTA-METHYLCYCLOPENTADIENYL)LEAD [J].

ATWOOD, JL ;

HUNTER, WE ;

COWLEY, AH ;

JONES, RA ;

STEWART, CA .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1981, (17) :925-927

[6] Self-consistent molecular Hartree-Fock-Slater calculations - I. The computational procedure [J].

Baerends, E. J. ;

Ellis, D. E. ;

Ros, P. .

CHEMICAL PHYSICS, 1973, 2 (01) :41-51

[7] DENSITY-FUNCTIONAL EXCHANGE-ENERGY APPROXIMATION WITH CORRECT ASYMPTOTIC-BEHAVIOR [J].

BECKE, AD .

PHYSICAL REVIEW A, 1988, 38 (06) :3098-3100

[8] SYNTHESIS AND CHARACTERIZATION OF THE ENCAPSULATED STANNOCENES [(C3H7)(3)C5H2]SN2 AND [(C3H7)(4)C5H]SN2 [J].

BURKEY, DJ ;

HANUSA, TP .

ORGANOMETALLICS, 1995, 14 (01) :11-13

[9] Synthesis, characterization, and molecular structure of bis{(tert-butyldimethylsilyl)-tetramethylcyclopentadienyl}lead [J].

Constantine, SP ;

Hitchcock, PB ;

Lawless, GA .

ORGANOMETALLICS, 1996, 15 (19) :3905-3906

[10]

CONSTANTINE SP, 1996, J CHEM SOC CHEM COMM, P1101

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