Nitrogenous Chelate Complexes of Transition Metals IV
Pseudo-tetrahedral copper(II) complexes containing 2,2′-biquinolyl
The mono- and bis-2,2′-biquinolyl complexes Cu(biq)X 2 (X = Cl, Br, and NO 3) and Cu(biq) 2(ClO 4) 2 have been prepared. The electronic spectra of these compounds are consistent with a pseudo-tetrahedral arrangement about the copper atoms. The magnetic susceptibilities of these compounds over the temperature range ∼80-400°K obey a Curie-Weiss law with θ values in the range 0 to -7°K. The compounds' magnetic moments lie in the range 1.93-2.02 BM and this is comparable with the values of other known pseudo-tetrahedral copper(II) complexes. The brown bis complex readily absorbs water to form a green monohydrate, Cu(biq) 2(ClO 4) 2·H 2O. The possible structure of this compound is discussed.
C. M. Harris et al., "Nitrogenous Chelate Complexes of Transition Metals IV," Inorganic Chemistry, American Chemical Society (ACS), Jan 1967.
The definitive version is available at https://doi.org/10.1021/ic50052a008
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© 1967 American Chemical Society (ACS), All rights reserved.