Cyanide-bridged one-dimensional bimetallic complexes based on a tridentate copper(II) building block: synthesis, crystal structures and magnetic properties

• Published in: Transition metal chemistry (Weinheim) Vol. 39; no. 4; pp. 387 - 392
• Main Authors: Li, Shu-Tao, Zhao, Chong-Chao, Cui, Ai-Li, Kou, Hui-Zhong
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.05.2014; Springer Nature B.V
• Subjects: Bimetals; Bridges (structures); Catalysis; Chemistry; Chemistry and Materials Science; Coordination polymers; Crystal structure; Cyanides; Ferromagnetism; Inorganic Chemistry; Ligands; Magnetic properties; Organometallic Chemistry; Physical Chemistry; Ferromagnetic Coupling; Cyanide Ligand; Tridentate Ligand; Magnetic Coupling; Magnetic Susceptibility Measurement
• ISSN: 0340-4285; 1572-901X
• DOI: 10.1007/s11243-014-9812-2

The reactions of [M III (CN) 6 ] 3− (M = Cr or Co) with Cu II complexes of a tridentate schiff base [Cu(aemp)Cl] or [Cu(aemp)Ac] 2 (Haemp = 2-[(2-amino-ethylimino)-methyl]-phenol) give rise to 1D cyanide-bridged bimetallic coordination polymers [Cu 4 (aemp) 4 (H 2 O) 2 ][Cr(CN) 6 ]Cl ( 1 ) and [Cu 3 (aemp) 3 (H 2 O)][Co(CN) 6 ]·2H 2 O·MeOH ( 2 ). In complex 1 , the six cyanide ligands of the [Cr(CN) 6 ] 3− moiety are involved in bridging, while in complex 2 only five cyanide ligands act as bridges to give a neutral chain. Magnetic studies reveal that complex 1 exhibits intermetallic ferromagnetic coupling, with J  = 8.2 cm −1 .