Accessing decaphenylmetallocenes of ytterbium, calcium, and barium by desolvation of solvent-separated ion pairs: Overcoming adverse solubility properties

被引：66

作者：

Deacon, Glen B. ^{[1
]}

Forsyth, Craig M. ^{[1
]}

Jaroschik, Florian ^{[1
]}

Junk, Peter C. ^{[1
]}

Kay, Danielle L. ^{[1
,2
]}

Maschmeyer, Thomas ^{[2
]}

Masters, Anthony F. ^{[2
]}

Wang, Jun ^{[1
]}

Field, Leslie D. ^{[3
]}

机构：

[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

[2] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[3] Univ New S Wales, Sch Chem, Kensington, NSW 2052, Australia

来源：

ORGANOMETALLICS | 2008年 / 27卷 / 18期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1021/om800501z

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The redox-transmetalation ligand-exchange reaction of ytterbium or calcium metal with 2 equiv of pentaphenylcyclopentadiene (C5Ph5H) and 1 equiv of HgPh2 in thf afforded the solvent-separated ion pairs (SSIPs) [M(thf)(6)][C5Ph5](2) (M = Yb, Ca), which were characterized by single-crystal X-ray analyses. Addition of toluene to the isolated SSIPs led to the precipitation of the homoleptic sandwich complexes [M(C5Ph5)(2)] (M = Yb, Ca). In the reaction of barium metal with C5Ph5H and HgPh2 the corresponding SSIP was observed in situ, and only the sandwich complex [Ba(C5Ph5)(2)] could be isolated. Single-crystal X-ray analyses were carried out for [M(C5Ph5)(2)] (M = Yb, Ba), which confirmed the highly symmetric structure of these complexes with two parallel cyclopentadienyl ligands. Oxidation and metal-ligand exchange reactions were investigated for the divalent ytterbium complexes.

引用

页码：4772 / 4778

页数：7

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