68825-54-7Relevant academic research and scientific papers
Molecular structure of diphenylbis(9,10-phenanthrenesemiquinonate)tin(IV), an organometallic diradical complex
Batsanov, Andrei S.,Howard, Judith A. K.,Brown, Martyn A.,McGarvey, Bruce R.,Tuck, Dennis G.
, p. 699 - 700 (1997)
The title compound, formed in the reaction between hexaphenylditin and 9,10-phenanthrenequinone, is shown to be an organotin(IV) diradical; its X-ray structure and EPR spectra are reported.
Studies of organotin(IV)-orthoquinone systems
Brown, Martyn A.,McGarvey, Bruce R.,Ozarowski, Andrzej,Tuck, Dennis G.
, p. 165 - 172 (2007/10/03)
The primary process in the reaction of hexaphenylditin with various substituted orthoquinones (Q) is shown to involve attack by the quinone at a phenyl ligand. The intermediate thus formed decomposes to yield Ph3Sn(SQ·), where S(Q·-) is the corresponding semiquinonate. Rearrangement of these species in solution gives rise to biradicals, while intramolecular electron transfer may lead to the formation and precipitation of Ph2Sn(CAT), where CAT2- is the corresponding substituted catecholate. The identification of these processes depends in part on electron paramagnetic resonance spectroscopy. The reaction of Ph3SnCl or Ph2SnCl2 with Na(TBSQ·) (TBSQ·- = 3,5-di-tert-butyl-orthobenzosemiquinonate) results in the formation of Ph2Sn(TBSQ·), which can undergo redistribution and intramolecular electron transfer, so that the solution chemistry of these latter systems is similar to that of the products of the Sn2Ph6 + Q reaction.
