Half-sandwich bis(propiolamidinate) rare-earth metal complexes: synthesis, structure and dissociation of the cyclopentadienyl ligand via competition with an amidinate

Ling Xu; Yu-Chen Wang; Wen-Xiong Zhang; Zhenfeng Xi

doi:10.1039/c3dt52179f

Half-sandwich bis(propiolamidinate) rare-earth metal complexes: synthesis, structure and dissociation of the cyclopentadienyl ligand via competition with an amidinate

Dalton Trans. 2013 Dec 21;42(47):16466-9. doi: 10.1039/c3dt52179f.

Authors

Ling Xu¹, Yu-Chen Wang, Wen-Xiong Zhang, Zhenfeng Xi

Affiliation

¹ Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China. wx_zhang@pku.edu.cn.

PMID: 24107932
DOI: 10.1039/c3dt52179f

Abstract

A comparative study on the stabilizing ability between C5Me4(SiMe3) (Cp' for short) and amidinate in rare-earth metal complexes is investigated. Cp' is found to dissociate from half-sandwich bis(propiolamidinate) lanthanides via competition with a propiolamidinate, which clearly shows that the coordinative ability of chelate amidinate is stronger than that of η(5)-Cp' under the present conditions.