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Structures and Magnetic Properties of Manganese(II) Compounds Based on Chains with Simultaneous Carboxylate and Pseudohalide Bridges
Author(s) -
Zhuang GuangMei,
Li XiuBing,
Wen YanQing,
Tian ChunYan,
Gao EnQing
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402287
Subject(s) - chemistry , carboxylate , manganese , zwitterion , crystallography , antiferromagnetism , halide , stereochemistry , molecule , inorganic chemistry , organic chemistry , physics , condensed matter physics
Various zwitterionic carboxylate ligands form Mn II coordination polymers with carboxylate and pseudo‐halide bridges mixed in different ways. With mono‐zwitterions, [Mn(N 3 ) 2 (L 1 )(H 2 O)] n and [Mn(N 3 ) 2 (L 2 )] n contains 1D chains with (μ‐1,1‐N 3 )(μ‐1,3‐OCO) and (μ‐1,1‐N 3 ) 2 (μ‐1,3‐OCO) bridges, respectively. With di‐zwitterions, [Mn(N 3 )(L 3 )] n (ClO 4 ) n forms a 2D network based on chains with (μ‐1,1‐N 3 )(μ‐1,3‐OCO) 2 bridges, whereas [Mn 2 (X) 4 (L 4 )] n · 2 n H 2 O (X = N 3 or NCO) are interpenetrating 3D networks based on chains with (μ‐1,1‐X) 2 (μ‐1,3‐OCO) bridges. With a tri‐zwitterion, [Mn 7 (N 3 ) 14 (OH) 2 (L 5 )(H 2 O) 6 ] n · 4 n H 2 O is a 2D network based on a novel chain in which μ‐1,1‐N 3 ‐ and μ‐1,3‐OCO‐bridged trinuclear motifs and μ 3 ‐OH‐ and μ‐1,1‐N 3 ‐bridged tetranuclear motifs are linked by μ‐1,3‐N 3 and μ 3 ‐1,1,3‐N 3 . All compounds exhibit antiferromagnetic interactions, the magnitude of which depends upon the nature and mixing mode of the bridges, and follow the trend (μ ‐ N 3 )(μ‐OCO) < (μ‐N 3 )(μ‐OCO) 2 < (μ‐N 3 ) 2 (μ‐OCO) < (μ‐NCO) 2 (μ‐OCO).