A (4-Ethylpyridine)(N-salicylideneglycinato)copper(II) Tetramer

The title compound, cyclo-tetrakis[(4-ethylpyridine-N)(N-salicylideneglycinato- O,N,O':O'')copper(II)], [Cu(C₉H₇NO₃)(C₇H₉N)]₄, adopts a square-pyramidal Cu^II coordination with the tridentate N-salicylideneglycinato Schiff base dianion (TSB^2-) and the 4-ethylpyridine ligand bound in the basal plane. The apex of the pyramid is occupied by a carboxylic O atom from the neighbouring chelate at an apical distance of 2.458 (2) Å. Four such molecules build a tetrameric unit, in which all copper positions are magnetically nonequivalent. The unit cell contains four tetramers.

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