Syntheses and magnetic properties of three transition metal complexes based on 4′-p-tolyl-2,2′:6′,2″-terpyridine and SCN

• Published in: Polyhedron Vol. 173; p. 114124
• Main Authors: Zhao, Fang-Hua, Jia, Xin-Meng, He, Yuan-Chun, Huang, Long-Wei, Yan, Xiao-Qing, Li, Zhong-Lin, Li, Jia-Xing, Feng, Rui, You, Jin-Mao
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.11.2019
• Subjects: Crystal structure; Magnetic property; SCN; Terpyridine ligand; Transition metal complexes; Magnetic property; Transition metal complexes; Terpyridine ligand; SCN; Crystal structure
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2019.114124

Syntheses and magnetic properties of three transition metal complexes based on 4′-p-tolyl-2,2′:6′,2″-terpyridine (ttpy) and SCN− are described. The three complexes shows three distinct structures for the versatile coordination fashions of the metal centers and SCN−, and all shows the supramolecular structures connected by CH⋯S hydrogen bonds and π⋯π interactions. [Display omitted] Three transition metal complexes based on 4′-p-tolyl-2,2′:6′,2″-terpyridine (ttpy) and SCN−, [Mn2(ttpy)2(SCN)3Cl] (1), [Co2(ttpy)2(SCN)4]·H2O (2) and [Ni(ttpy)(SCN)2]2 (3), have been hydrothermally synthesized. The single-crystal X-ray diffraction analyses reveal that the three complexes display discrete molecules with three distinct structures caused by the different coordination geometry of the transition metal centers. Complex 1 contains two neutral independent components of mononuclear [Mn(ttpy)(SCN)2] and binuclear [Mn(ttpy)(SCN)Cl]2. Complex 2 shows an ion-pair bicomponent structure of [Co(ttpy)2]2+ and [Co(SCN)4]2−. Complex 3 shows a binuclear structure bridged by two end-to-end bridging SCN− anions. Magnetic properties of the three complexes have been investigated.