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https://open.uns.ac.rs/handle/123456789/13887
Title: | Transition metal complexes with pyrazole-based ligands. XXII. Di-μ-thiocyanato-bis[(3,5-dimethyl-1H-pyrazole-1-carboxamidine-κ2N,N′)(thiocyanato-κN)copper(II)] and a redetermination of bis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-κ2N,N′)bis(nitrato-κO)copper(II) | Authors: | Bogdanović G. Jaćimović Z. Leovac, Vukadin |
Issue Date: | 1-Jan-2005 | Journal: | Acta Crystallographica Section C: Crystal Structure Communications | Abstract: | The title CuIII complex, [Cu2(NCS)4(C 6H10N4)2], represents the first crystal structure of a polynuclear transition metal complex with the 3,5-dimethyl-1H-pyrazole-1-carboxamidine ligand (HL). It is compared with previously reported crystal structures of metal complexes with the same HL ligand. The molecule contains an eight-membered binuclear Cu2(NCS) 2 ring, which is centrosymmetric and in a chair conformation. The Cu atom has a distorted square-pyramidal geometry with a very elongated Cu-S bond of 2.993 (2) Å. The crystal structure redetermination of the bis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-κ2N,N′) bis(nitrato-κO)copper(II) complex, [Cu(NO3)2(C 6H10N4)2], and analysis of its hydrogen bonds confirm the significance of the NO3 groups in the formation of a three-dimensional hydrogen-bonding network. Both complexes are centrosymmetric, the inversion centre being located at the mid-point of the Cu⋯Cu line in (I) and the Cu atom being located at the inversion centre in (II). © 2005 International Union of Crystallography. | URI: | https://open.uns.ac.rs/handle/123456789/13887 | ISSN: | 01082701 | DOI: | 10.1107/S0108270105018913 |
Appears in Collections: | Naučne i umetničke publikacije |
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