| 20124678 |
Becker CA, Black RS, Forbes RP: Tris (tert-butyl isocyanide) bis [tris (4-methoxyphenyl) phosphine] cobalt (I) perchlorate dichloromethane disolvate and tris (tert-butyl isocyanide) bis [tris (4-methoxyphenyl) phosphine] cobalt (II) bis (perchlorate) dichloromethane disolvate: modification of a trigonal-bipyramidal structure with change of metal oxidation state. Acta Crystallogr C. 2010 Feb;66(Pt 2):m40-3. Epub 2010 Jan 15.
The title complexes, [Co (C (5) H (9) N)(3)(C (21) H (21) O (3) P)(2)] ClO (4).2CH (2) Cl (2), (I), and [Co (C (5) H (9) N)(3)(C (21) H (21) O (3) P)(2)](ClO (4))(2).2CH (2) Cl (2), (II), respectively, crystallize in the hexagonal space group P6 (3)/m and the monoclinic space group P2 (1)/n, respectively. The cation of complex (I) has D (3h) site symmetry around the Co atom and the overall symmetry is C (3h). Complex (II) is best described as having a distorted trigonal-bipyramidal coordination, with a Co site symmetry of C (s). Compounds (I) and (II) form an analogous pair of five-coordinate Co (I) and Co (II) complexes with the same ligands, making it possible to establish (i) if the Co site coordination for both complexes is indeed trigonal-bipyramidal, as initially assumed, and (ii) if significant structural differences occur when the oxidation state of the metal is changed. |
1(0,0,0,1) |