Controlling Valence Tautomerism of Cobalt Complexes Containing the Benzosemiquinone Anion as Ligand

✍ Scribed by David M. Adams; Prof. Andrea Dei; Prof. Dr. Arnold L. Rheingold; Prof. Dr. David N. Hendrickson

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 394 KB
• Volume: 32
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.199308801

✦ Synopsis

9; deep-red crystals (0.150 x0.150 x0.120 mm'). monoclinic space group C2!c with u = 28.627(8). h = 13.222(4), c = 28.097(8) A. 6 = 91.96(2) , V = 10629.7 A' . 2 = 4, Q ~~, ~~ = 1.416 gcm-3. f(O00) = 4640, {I = 24.19 cm-'. A crystal of 4 suitable for X-ray structure analysis was selected on a cooled plate and mounted from the mother liquor. 61 72 intensity data were collected on a Philips PW 1100/16 diffractorneter at -100 'C with Cu,, radiation ;

The systematic absences together with the E statistics and the NZ test suggested the space group to be C2:i. SuccesslLl structure solution and refinement confirmed this choice. The structure was solved by a combination of Patterson, difference Fourier. and full matrix least-squares methods). The final conventional residuals were R = 0.0696 and R, = 0.0930 for 3266 reflections having I > 3a(l) and 677 variables.

Further details of the crystal structure investigation are available on re-