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Titolo:
REACTIONS OF GALLIUM(III) CHLORIDE WITH LI[E(SIME(3))(3)] (E=SI OR GE) - CRYSTAL-STRUCTURE OF (R(3)GE)CLGA(MU-OET)(2)GACL(GER(3)) (R=SIME(3))
Autore:
SCHWAN F; MALLELA SP; GEANANGEL RA;
Indirizzi:
UNIV HOUSTON,DEPT CHEM,UNIV PK HOUSTON TX 77204 UNIV HOUSTON,DEPT CHEM HOUSTON TX 77204
Titolo Testata:
Journal of the Chemical Society. Dalton transactions
fascicolo: 22, , anno: 1996,
pagine: 4183 - 4187
SICI:
0300-9246(1996):22<4183:ROGCWL>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRIS(TRIMETHYLSILYL)SILYL DERIVATIVES; CLEAVAGE; SILICON; BORON; TIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
F. Schwan et al., "REACTIONS OF GALLIUM(III) CHLORIDE WITH LI[E(SIME(3))(3)] (E=SI OR GE) - CRYSTAL-STRUCTURE OF (R(3)GE)CLGA(MU-OET)(2)GACL(GER(3)) (R=SIME(3))", Journal of the Chemical Society. Dalton transactions, (22), 1996, pp. 4183-4187

Abstract

Reactions of Li(ER(3))(thf)(x) (E = Si or Ge, R = SiMe(3), thf = tetrahydrofuran) with gallium(III) chloride were carried out in diethyl ether with 1:1 and 2:1 stoichiometries. The 1:1 reactions gave products that decomposed upon recrystallization from pentane or drying in vacuo. The NMR spectra were consistent with a mixture of Li[R(3)SiGaCl(3)](thf)(4) (major) and GaCl4(SiR(3)). thf (minor) in the case of E = Si and GaCl2(GeR3). thf for E = Ge. The 2: 1 E = Ge reactions gave a mixture of two products exhibiting needle and plate crystal morphologies. The NMR spectra and a partial structure determination identified the former as Li[R(3)GeGaCl(3)](thf)(4). A full structure determination of the latter showed it to be the diethoxy-bridged dimer, (R(3)Ge)ClGa(mu-OEt)(2)GaCl(GeR(3)). The latter product is thought to result from cleavage of the ether solvent by either Ga2Cl6 or the intermediate galliumcomplex. Possible pathways are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 15:27:04