Premium
Syntheses, Crystal Structures and Magnetic Properties of 4,4′‐Bipyridine Bridged Dinuclear Mn II and Ni II Complexes with the Ligand BMA [BMA = N,N ‐bis(benzimidazol‐2‐yl‐methyl)amine]
Author(s) -
Liu YanZhao,
Su QiaoJuan,
Qiao Xin,
Xie ChengZhi,
Ouyang Yan,
Xu JingYuan,
Liao DaiZheng,
Yan ShiPing
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900344
Subject(s) - crystallography , supramolecular chemistry , chemistry , hydrogen bond , single crystal , 4,4' bipyridine , magnetic susceptibility , crystal structure , bipyridine , amine gas treating , bridging ligand , infrared spectroscopy , ligand (biochemistry) , spectroscopy , ion , antiferromagnetism , stereochemistry , molecule , organic chemistry , physics , biochemistry , receptor , quantum mechanics , condensed matter physics
The directed assembly of N , N ‐bis(benzimidazol‐2‐yl‐methyl)amine (BMA), 4,4′‐bipyridine (4,4′‐bipy) and Ni II or Mn II salts resulted in the formation of the novel compounds [{Ni(BMA)(SCN) 2 } 2 ] · (μ‐4,4′‐bipy)(DMSO) 2 ( 1 ) and [{Mn(BMA)(SCN) 2 } 2 ] · (μ‐4,4′‐bipy) ( 2 ), which were characterized by single‐crystal X‐ray diffraction, elemental analysis, IR spectroscopy, UV/Vis spectroscopy and magnetic measurement. The X‐ray single‐crystal analysis reveals that 1 and 2 are discrete dinuclear compounds bridged by 4,4′‐bipy, further arranged in multidimensional supramolecular networks which are stabilized by different modes of hydrogen bonding and π–π interactions. Variable‐temperature magnetic measurements (2–300 K) of 1 and 2 were modeled with magnetic coupling constants J = –0.16 and –0.022 cm –1 , respectively showing the weak antiferromagnetic coupling between the two metal ions in each dinuclear complex, which is also observed for similar 4,4′‐bipyridine bridging complexes.