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Synthesis, Structures, and Magnetic Properties of Two Tetranuclear Copper Complexes with End‐on Azido and Phenoxo Bridges Containing Chiral Schiff Base Ligands
Author(s) -
Hou XiaoKang,
Wu LinFei,
Xiao HongPing,
Li MingXing,
Zhu ShouRong,
Wang ZhaoXi
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200442
Subject(s) - copper , schiff base , crystallography , antiferromagnetism , chemistry , single crystal , crystal structure , infrared spectroscopy , stereochemistry , physics , organic chemistry , condensed matter physics
The copper complexes [Cu 4 (μ‐L 1 ) 2 (μ 1, 1 ‐N 3 ) 2 · (CH 3 O) 2 ] ( 1 ) and [Cu 4 (μ‐L 2 ) 2 (μ 1, 1 ‐N 3 ) 2 (N 3 ) 2 ] · (H 2 O) 2 ( 2 ) [H 2 L 1 = (1 R ,3 S )‐ N ′, N ′′‐bis[salicylidene]‐1, 3‐diamino‐1, 2, 2‐trimethylcyclopentane and H 2 L 2 = (1 R ,3 S )‐ N ′, N ′′‐bis[5‐methylsalicylidene]‐1, 3‐diamino‐1, 2, 2‐trimethylcyclopentane] were synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single crystal X‐ray diffraction. Both are tetranuclear complexes consisting of dinuclear copper moieties [Cu 2 L 1 ] 2+ or [Cu 2 L 2 ] 2+ connected by two end‐on azido bridges. Low temperature magnetic studies indicate that weak antiferromagnetic couple dominates in 1 and 2 .