Issue 76, 2016, Issue in Progress

Novel manganese(ii) and cobalt(ii) 2D polymers containing alternating chains with mixed azide and carboxylate bridges: crystal structure and magnetic properties

Abstract

Two coordination polymers formulated as [Mn3(L1) (N3)6(H2O)4] (1) and [Co3(L2) (N3)6(H2O)5] (2) (L1 = 1,1′-bis(4-carboxylatobenzyl)-4,4′-bipyridinium, L2 = 1,2,4,5-tetrakis(4-carboxylatopyridinium-1-methylene)benzene) were synthesized and structurally and magnetically characterized. Both compounds 1 and 2 contain alternating chains constructed by azide and carboxylate bridges. The independent sets of bridges alternate in an A1A1BA1A1 sequence between adjacent Mn(II) ions in 1: [(EO-N3)(OCO)] double bridges (EO = end-on) (denoted as A1) and (EO-N3)2 double bridges (denoted as B) and the alternation mode is in an A2A2BA2A2 sequence between adjacent Co(II) ions in 2: [(EO-N3)(OCO)2] triple bridges (denoted as A2) and (EO-N3)2 double bridges (denoted as B). The alternating chains are interlinked into 2D coordination layers respectively by the L1 and L2 ligands. Magnetic studies demonstrate that the [(EO-N3)(OCO)] and (EO-N3)2 double bridges mediate antiferromagnetic coupling between Mn(II) ions in 1 while the [(EO-N3)(OCO)2] triple and (EO-N3)2 double bridges mediate ferromagnetic coupling between Co(II) ions in 2.

Graphical abstract: Novel manganese(ii) and cobalt(ii) 2D polymers containing alternating chains with mixed azide and carboxylate bridges: crystal structure and magnetic properties

Supplementary files

Article information

Article type
Paper
Submitted
09 Apr 2016
Accepted
25 Jul 2016
First published
25 Jul 2016

RSC Adv., 2016,6, 72326-72332

Novel manganese(II) and cobalt(II) 2D polymers containing alternating chains with mixed azide and carboxylate bridges: crystal structure and magnetic properties

Y. Wang, Q. Tan, X. Guo, H. Liu, Z. Liu and E. Gao, RSC Adv., 2016, 6, 72326 DOI: 10.1039/C6RA09143A

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