Magnetic properties of two 1D complexes with mixed bridging ligands

The crystal structure of a 1D chain complex, [Cu(SCN)(deae)]n (1) (Hdeae N,N-diethylamino ethanol), with mixed bridges was determined. The structure is composed of a dimeric Cu(II) unit with two bridging m 3 -h 2 -aminoethanolato ligands, while the units are bridged by end-to-end thiocyanato groups to form a 1D chain. The variable temperature magnetic susceptibility of 1 and [Cu(SCN)(dmae)]n (2) (HdmaeN,N-dimethylamino ethanol) in the temperature 5‐300 K have been interpreted in terms of simple dimer model approximation (H 2JSA·SB). The magnetic behaviors show that the aminoethanolato bridges mediate a moderately strong antiferromagnetic exchange interaction with the fitting values g 1.96(3), J 175(3) cm 1 for 1 and g2.016(7), J 205.4(7) cm 1 for 2, respectively. © 2000 Elsevier Science Ltd. All rights reserved.