1H and 31P endor studies on powdered samples of magnetically dilute copper(II) O,O'-disubstituted dithiophosphate complexes

✍ Scribed by N.D. Yordanov; M. Zdravkova

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 345 KB
• Volume: 127
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)80595-4

✦ Synopsis

Studies by ENDOR on bis(O,O'-disubstituted dithiophosphato)copper(II) complexes with methyl, ethyl, isopropyl, o-cresyl and thymil remote ligand substituents in magnetically diluted powdered samples as well as in solid toluene solutions are reported. The true values of 'H and 31P superhyperfine splittings as well as the polar angle B(g, , rCU_") = 40" are estimated. It is found that: (a) 31P has sp2d, pz electronic configuration with the S-P-S angle in the range 102-103" for all samples studied; (b) taking into account the multicenter interactions (Cu-H and S-H) the distance r,-._" is calculated to be 4.7 A for the methyl derivative. These values are in perfect accord with the corresponding angles and distances of the host lattices found by X-ray analysis.