Back to Search Start Over

Heterometallic coordination polymers based on dipeptide schiff base Cu(ii) metalloligand: synthesis, structures, and magnetic properties.

Authors :
Zhang, Jinhong
Cheng, Shaomin
Wang, Xiangfei
Yuan, Limin
Xue, Mingqiang
Wang, Yang
Liu, Wenlong
Source :
CrystEngComm. 2013, Vol. 15 Issue 30, p6074-6082. 9p.
Publication Year :
2013

Abstract

Three new heterometallic coordination polymers formulated as {[Ca(CuL)(H2O)5]·H2O}n (1), [Sr(CuL)(H2O)2]n (2), and [Ba(CuL)(H2O)4]n (3) have been obtained by reaction of a rigid metalloligand [CuL]2− (H4L = N-5-sulfosalicylideneglycylglycine) with the corresponding alkaline earth metal cations M2+ (M = Ca, Sr or Ba). Their crystal structures are determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses and IR spectra. The coordination preferences of the alkaline earth metal cations are found to have pronounced effects on the structural topologies. Complex 1 has a distorted ladder-like one-dimensional (1D) structure. In complex 2, Sr(ii) ions link metalloligands [CuL]2−via the sulfonate and carbonyl oxygen atoms to generate a three-dimensional (3D) framework. Complex 3 is arranged in a 3D framework formed by the linkage of copper(ii) and barium(ii) via carboxylate and sulfonate bridges. Variable-temperature magnetic susceptibility studies indicate that all the complexes exhibit weak antiferromagnetic interactions between the Cu(ii) paramagnetic centers. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14668033
Volume :
15
Issue :
30
Database :
Academic Search Index
Journal :
CrystEngComm
Publication Type :
Academic Journal
Accession number :
100903232
Full Text :
https://doi.org/10.1039/c3ce40596f