Some trimethylphosphineoxide complexes of lanthanide and indium tris-(bis-trimethylsilylamides) |
| |
| Authors: | D.C. Bradley Yi Ci Gao |
| |
| Affiliation: | Department of Chemistry, Queen Mary College, Mile End Road, London E1 4NS, England |
| |
| Abstract: | The reactions of the 3-coordinated metal tris-(bis-trimethylsilylamides) M[N(SiMe3)2]3 (ML3; where M = La, Pr, Eu, Gd and In) with trimethylphosphineoxide Me3PO(L′) have been studied. All of these metals gave 1:1 complexes ML3(L′) which dissociated on heating in vacuo. The Pr and Eu complexes gave interesting pseudo-contact shifted 1H NMR spectra which are qualitatively in accord with the expected molecular structure. Variable temperature NMR measurements proved the restricted rotation of the silylamide (L) ligands occurs around the M–N axes. Evidence is also presented for unstable 5-coordinated complexes ML3(L′)2. The gadolinium 1:1 complex gave a very broad NMR spectrum and its ESR spectrum is being investigated. |
| |
| Keywords: | Author to whom correspondence should be addressed. |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
