35Cl NQR study of bis(4-chlorophenyl)sulphoxide

TRISTÁN OSÁN; CLEMAR SCHURRER; JOSÉ SCHNEIDER; ALDO BRUNETTI

JOURNAL OF PHYSICS CONDENSED MATTER

IOP Publishing Ltd

Lugar: United Kingdom; Año: 1996 vol. 8 p. 491 - 497

0953-8984

A pulsed 35Cl nuclear quadrupolar resonance (NQR) study was performed onbis(4-chlorophenyl)sulphoxide. In order to characterize the structural thermal behaviour, theNQR spectra were recorded from 80 to 350 K. The results suggest the coexistence of twocrystalline phases over the whole scanned temperature range. In spite of the very close molecularstructure of the compound with the bis(4-chlorophenyl)sulphone, there is no evidence of anyincommensurate phase transition. This fact demonstrates the fundamental role of the moleculargroup linking phenyl rings in the appearance of a normal?incommensurate phase transition inbiphenyl-type compounds.