INVESTIGADORES
LICK Ileana Daniela
artículos
Título:
Spectroscopic and thermal properties of stannadithiane compounds bearing endocyclic ether and lactone groups
Autor/es:
DELGADO ESPINOSA, ZULY Y.; LICK, ILEANA DANIELA; SAEED, AAMER; DELLA VÉDOVA, CARLOS O.; ERBEN, MAURICIO F.
Revista:
SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY.
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2019 vol. 210 p. 222 - 229
ISSN:
1386-1425
Resumen:
Four related stannadithiane compounds containing different endocyclic functional groups -including ether (1),diether (2), lactone (3), and spirolactone (4)- were prepared. The conformational landscape has been fully determinedfor the 8-membered representative (compound 1) resulting in a distorted crown form with the butylchains adopting an extended conformation. The infrared and Raman spectra of stannadithiane species havebeen measured and interpreted, aided by quantum chemical calculations and potential energy surface analysis.Special attention has been devoted to the analysis of the vibrational features of the heterocyclic moieties. Thecharacteristic νas(SnS) and νs(SnS) stretching modes of the SnS2 endo-cyclic group were clearly observedin the Raman spectra at around 340 and 315 cm−1, respectively. The exo-cyclic ν(SnC) stretching modeswere found near 590 and 565 cm−1 for the antisymmetric and symmetric motions, respectively. Thermal behaviorfor compounds 2?4 has been determined by thermogravimetric methods.