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Titolo:
The structural characterisation of telluraphthalic anhydride, selenaphthalic anhydride and of 2-selenaphthalide
Autore:
Majeed, Z; McWhinnie, WR; Paxton, K; Hamor, TA;
Indirizzi:
Aston Univ, Birmingham B4 7ET, W Midlands, England Aston Univ Birmingham W Midlands England B4 7ET 7ET, W Midlands, England Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England
Titolo Testata:
JOURNAL OF ORGANOMETALLIC CHEMISTRY
fascicolo: 1, volume: 577, anno: 1999,
pagine: 15 - 18
SICI:
0022-328X(19990327)577:1<15:TSCOTA>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETEROCYCLIC ORGANOTELLURIUM COMPOUNDS; COORDINATION; THIOPHENES;
Keywords:
selenium; tellurium; heterocycles;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: McWhinnie, WR Aston Univ, Aston Triangle, Birmingham B4 7ET, W Midlands, England Aston Univ Aston Triangle Birmingham W Midlands England B4 7ET
Citazione:
Z. Majeed et al., "The structural characterisation of telluraphthalic anhydride, selenaphthalic anhydride and of 2-selenaphthalide", J ORGMET CH, 577(1), 1999, pp. 15-18

Abstract

The characterisation, by single crystal X-ray methods, of three heterocyclic organoselenium and -tellurium compounds is reported. Tellura phthalic anhydride (1), C8H4O2Te, and selenaphthalic anhydride (2), C8H4O2Se, are bothmonoclinic and crystallise in space group P2(1)/n. 2-Selenophthalide (3), C8H6OSe, is also monoclinic, space group P2(1)/c. The Te(Se)-C(sp(2)) bond lengths in 1, 2, and 3, averaging at 2.161(6) Angstrom (Te) and 1.945(1) Angstrom (Se) are longer than observed normally (2.116 and 1.893 Angstrom, respectively). No evidence of electron delocalisation in the heterocyclic rings of 1 and 2 is noted; however, a short C(8)-C(7) bond and a relatively long C(8) = O bond in 3 indicates some degree of delocalisation in that case. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 02:18:28