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Examples of Heterometallic 3d–3d Azido Complexes by One‐Pot Synthesis
Author(s) -
Zhao JiongPeng,
Zhao Ran,
Hu BoWen,
Yang Qian,
Zhang XiaoFeng,
Liu FuChen
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201201458
Subject(s) - chemistry , crystallography , trigonal bipyramidal molecular geometry , carboxylate , octahedron , antiferromagnetism , molecule , hydrothermal synthesis , ion , stereochemistry , crystal structure , hydrothermal circulation , physics , organic chemistry , seismology , geology , condensed matter physics
The assembly of Cu II , M II (Co II or Ni II ), azido, and isonicotinate acid N ‐oxide under hydrothermal conditions straightforwardly gives two isomorphic heterometallic 3d–3d azido complexes formulated [Cu 2 M(N 3 ) 4 (INO) 2 (H 2 O) 4 ] ∞ (INO = isonicotinate N ‐oxide; M = Co for 1 and Ni for 2 ). In the structure of the complexes, Cu II ions have a trigonal‐bipyramidal‐coordinated configuration, whereas the M II ions have octahedral geometry with two water molecules in the apical positions. The structure of the complexes is based on azido‐carboxylate mixed‐coordination Cu–M–Cu trimers, which are further linked by double end‐on (EO) azido anions through the Cu II ions to form a chain structure, and the 1D structure can be described as EO azido/ syn–syn carboxylates and double EO azido mixed‐bridge spin‐sequence chains with –1/2– J 1 –3/2– J 1 –1/2– J 2 –1/2– for 1 and –1/2 –J 1 –1 –J 1 –1/2 –J 2 – 1/2– for 2 . Magnetic studies indicated that 1 and 2 are both metamagnets for the weak antiferromagnetic interactions between the ferromagnetic chains.