摘要：

The complexes [ML1]2+ with Mcobalt(II), nickel(II), nickel(II) and zinc(II) and L1 = 8,11-bis (2)-pyridylmethyl) 5,6,7,8,9,10,16,17-octahydrodibenzo [e,m][1,4]dithia[8,11]diazacyclotetradecine have been prepared as perchlorate salts. [CoL1]2+ and [NiL1]2+ were characterized by UV-Vis spectroscopy and cyclic voltammetry. [CoL1]2+ is stable in air. The crystal structure of [NiL1] (ClO4)2·H2O shows a distorted octahedral geometry with cis-orientation of chemically identical donor atoms. Intraligand strain prevents short NiS bonds. In solution [ZnL1]2+ takes up ao atmospheric carbon dioxide and transforms to the dinuclear complex [(μ-CO3) (ZnL1)2] (ClO4)2, the crystal structure of which has been elucidated as well. The zinc atoms, which are situated outside the macrocyclic ring, are unsymmetrically bridged by the μ-carbonato group.

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