A repeated electron diffraction study of the structure of 2-chloro-1,3,2-dioxaphospholane

Anomeric effect, ring inversion, structural stability and vibrational assignments of 2-chloro-1,3,2-dioxaphospholane 2-oxide and 2-sulfide, c-C2H4O2PXCl (X is O or S)

“…The interesting structure and chemical properties of 2-chloro-1,3,2-dioxaphospholane 2-oxide and its derivatives [10][11][12][13][14][15][16][17][18] has turned our attention to investigate besides its ring inversion and structure in the present study also their vibrational spectra. The infrared and Raman spectra of 2-chloro-1,3,2-dioxaphospholane 2-oxide and its 2-sulfide were reported in an early study and their vibrational assignments were made on the basis of assumed C s symmetry [11].…”

Vibrational spectra, force constants and conformations of molecules of trivalent tricoordinate phosphorus compounds

“…According to the vibrational spectroscopy data, 106 the molecule of 2-chloro-1,3,2-dioxaphospholane (36) adopts a single conformation. Gas-phase electron diffraction study 107 of compound 36 revealed a stable (in the gas phase) conformation of molecule 36 shown in Fig. 3 (a-E O , X = Y = O).…”

“…Earlier, a normal coordinate analysis for 2-chloro-1,3,2-dioxaphospholane 36 has been performed for a symmetrical `envelope' conformation in which the phosphorus atom deviates from the plane passing through the other ring atoms 106 (a-E P ). Next to the publication cited, 107 a normal coordinate analysis for the non-symmetrical a-E O conformer (see Fig. 3) has been reported.…”