Schwingungsspektren und Normalkoordinatenanalyse von Bis(trifluormethyl)methylphosphan, -arsan und -stiban (CF3)2ECH3 (E = P, As, Sb) - Demuth, R.; Apel, J.; Grobe, J. (Elsevier)
The gas phase i.r. and liquid phase Raman spectra of (CF"3)"2ECH"3 (E = P, As, Sb) have been studied in detail. The absorption bands are assigned by analogy to E(CH"3)"3 and (CH"3)"2AsX (X = Cl, Br) and by a normal coordinate analysis combining the force constants for HCF"3, E(CH"3)"3, and (CH"3)"2AsX according to the LSFF method to give a MVFF. According to the results presented νE-C(F"3) can be considered as ''characteristic frequency''.
http://linkinghub.elsevier.com/retrieve/pii/0584-8539(78)80159-7
Keywords: V; U