First row transition metal complexes of a hexadentate pyrazole-based bispidine ligand
作者:Peter Comba、Michael Morgen、Hubert Wadepohl
DOI:10.1016/j.poly.2012.06.035
日期:2013.3
The efficient synthesis of a new hexadentate pyrazole-based bispidine-ligand and its first-row transition metal complexes (Fe-II, Co-II, Ni-II, Cu-II and zn(II)) is reported. There are interesting structural differences between the present and earlier hexadentate bispidine ligands (tetragonally versus trigonally distorted octahedral geometries). The structural analysis of the metal-free ligand and the five complexes shows that the structure enforced by the rigid pyrazole-based bispidine is best described as distorted trigonal prismatic, and this also emerges from the spectroscopic analysis. (C) 2012 Elsevier Ltd. All rights reserved.