✦ LIBER ✦

Reactions of tellurium(IV) chloride, aryl-, diaryl-, and triaryl tellurium(IV) chlorides with pyrimidine-2-thiols

✍ Scribed by Ajai K. Singh; Veena Singh; Bishan L. Khandelwal

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 609 KB
Volume: 3
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.520030209

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✦ Synopsis

types of' compounds. Elemental unulyses, molecular weights, coiiductances in solutions, I R , and ' H und '22 N M R spectrul datu of these compounds suggest that, in u11 of-them, the pyrimidine-2-thiols ligate through sul/iir only. I n the first two types o f derivatives, the thiol form o f L reacts with telluriuni moieties, resulting i n the liberation of' HCI. On the basis of' these data TeC13(L-H) uppears t o exist a s a dimer in which tiiu Te utoms are probably 5-coordinated und are bridged by two Cl. Tellurium in ArTeC12(L-H), Ph2TeC12.JJ, und Ph,TeCI.L also appears t o be 5-coordinated. IK datu suggest that the Te-S bond in Ph2TeC12.L is weak a n d , therefore, because of partial dissociation, the molecular complexes exhibit lower molecular izvights i n CH3CN. Ph3TeCl.L i n acetoni-. _ . ~ ~~~

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