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A 119m Sn variable‐temperature Mössbauer study of tin(IV) chloride and dibutyltin dichloride when dispersed in a poly(vinyl chloride) matrix
Author(s) -
Brooks John S,
Allen David W,
Unwin John
Publication year - 1987
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590010405
Subject(s) - chemistry , tin , vinyl chloride , mössbauer spectroscopy , chloride , matrix (chemical analysis) , polymer , polymer chemistry , nuclear chemistry , inorganic chemistry , organic chemistry , crystallography , chromatography , copolymer
Variable‐temperature Sn‐119m Mössbauer studies of tin(IV) chloride (SnCl 4 ) and dibutyltin dichloride (Bu 2 SnCl 2 ) when dispersed in a poly(vinyl chloride) (PVC) matrix have been interpreted using a Debye model. Recoilless fractions have been determined which indicate that at 80 K the Mössbauer technique is nearly three times as sensitive to the presence of SnCl 4 compared with Bu 2 SnCl 2 within the poly(vinyl chloride) matrix. These observations have been explained in terms of structural changes occurring on dispersion in the polymer matrix which result in the tin atom in tin(IV) chloride becoming six‐coordinate whereas that in dibutyltin dichloride reduces its coordination to five. The implications of these results for future applications of Mössbauer spectroscopy to the study of organotin compounds present in polymers are considered.