Crystal and Molecular Structures of [N,N′-bis((5-chloro-2-hydroxyphenyl)phenylmethylene)-4-thiaheptane-1,7- Diamino]copper(II)
The title complex has been synthesized and studied by single-crystal x-ray diffraction. Crystal data for Cu(cbpS), CuCl2SO2N2C38H28, are as follows: space group C2/c, Z = 8, a = 18.689 (4) Å, b = 13.735 (5) Å, c = 22.669 (9) Å, β = 100.61 (2)°, V = 5720 Å3, R = 3.1%, 2606 reflections. The complex molecule contains the metal atom in a distorted square pyramid with the Cu-S bond pointing at the apex. The O2N2 base of the pyramid is distorted so as to give some trigonal-bipyramidal character to the geometry, the N atoms being raised above (0.07 Å) the Cu atom and the O atoms below it (0.3 Å). Although the Cu-S bond is elongated (2.686 (1) Å), it is no weaker than the Cu-N bonds in related copper Schiff base complexes. The observation of a Cu-S bond at all is unexpected from the interpretation of earlier physical data on complexes containing the same type of thioether chain in the ligand. It now appears likely that such a bond occurs in some other complexes where its existence had not previously been proposed from the available data.
D. P. Freyberg et al., "Crystal and Molecular Structures of [N,N′-bis((5-chloro-2-hydroxyphenyl)phenylmethylene)-4-thiaheptane-1,7- Diamino]copper(II)," Inorganic Chemistry, American Chemical Society (ACS), Jan 1977.
The definitive version is available at http://dx.doi.org/10.1021/ic50173a017
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© 1977 American Chemical Society (ACS), All rights reserved.