Endo- and exocyclic substitutions in alpha-P4S3I2

Autor(en): Hepp, A
Blachnik, R
Stichwörter: Chemistry; Chemistry, Multidisciplinary; MAGNETIC-RESONANCE PARAMETERS; SELENIUM; SULFUR; TETRAPHOSPHORUS TRISULFIDE SKELETON
Erscheinungsdatum: 1999
Herausgeber: WILEY-V C H VERLAG GMBH
Journal: HELVETICA CHIMICA ACTA
Volumen: 82
Ausgabe: 12
Startseite: 2425
Seitenende: 2431
Zusammenfassung: 
Two isomers each of alpha-P4S2SeX2 and alpha-P4SSe2X2 (X=Cl, Br) have been identified by P-31-NMR spectroscopy in mixtures obtained from thermal reaction of PX3 and P4S1.4Se1.6. Systematic changes in chemical shifts and coupling constants with electronegativity of the ligand by exocyclic substitution and with alteration of the molecular geometry by the replacement of sulfur by selenium are reported.
ISSN: 0018019X

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