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Titolo:
SYNTHESIS AND CHEMISTRY OF CHIRAL TETRAPHENYLCYCLOPENTADIENES - X-RAYSTRUCTURES OF RH(ETA(5)-C(5)PH(4)R-ASTERISK)(ETA(4)-C8H12) (R-ASTERISK=MENTHYL, NEOMENTHYL)
Autore:
RAMSDEN JA; MILNER DJ; ADAMS H; BAILEY NA; SMITH AJ; WHITE C;
Indirizzi:
UNIV SHEFFIELD,DEPT CHEM SHEFFIELD S3 7HF S YORKSHIRE ENGLAND UNIV SHEFFIELD,DEPT CHEM SHEFFIELD S3 7HF S YORKSHIRE ENGLAND
Titolo Testata:
Organometallics
fascicolo: 5, volume: 14, anno: 1995,
pagine: 2575 - 2584
SICI:
0276-7333(1995)14:5<2575:SACOCT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRYSTAL-STRUCTURE; ASYMMETRIC CATALYSIS; METAL COMPLEXES; RHODIUM; LIGAND; HYDROGENATION; RUTHENIUM; STEREOCHEMISTRY; DIPHOSPHINES; REDUCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
J.A. Ramsden et al., "SYNTHESIS AND CHEMISTRY OF CHIRAL TETRAPHENYLCYCLOPENTADIENES - X-RAYSTRUCTURES OF RH(ETA(5)-C(5)PH(4)R-ASTERISK)(ETA(4)-C8H12) (R-ASTERISK=MENTHYL, NEOMENTHYL)", Organometallics, 14(5), 1995, pp. 2575-2584

Abstract

The syntheses of the homochiral cyclopentadienes C(5)Ph(4)RH (R* = menthyl; R = neomenthyl) are reported together with those of the corresponding rhodium complexes Rh-(C(5)Ph(4)R)(COD) (2a, R* = menthyl; 2b, R = neomenthyl). Both complexes react with bromine to give the corresponding species [Rh(C(5)Ph(4)R)Br-2](2) (3a, R* = menthyl; 3b, R* =neomenthyl). The X-ray structures of Rh(C(5)Ph(4)menthyl)(COD) and Rh(C(5)Ph(4)neomenthyl)(COD) have been determined at room temperature with use of Mo K alpha radiation (lambda = 0.710 69 Angstrom). Compound 2a crystallizes in the orthorhombic space group P2(1)2(1)2(1) (D-2(4),No. 19) with a = 12.762(35) Angstrom, b = 17.953(39) Angstrom, c = 31.91(14) Angstrom, V = 7311(42) Angstrom(3), Z = 8, and D-c = 1.306 g cm(-3) and was refined to R = 0.1349 on the basis of 1267 independent reflections. The analogous neomenthyl compound 2b crystallizes in the hexagonal space group P6(2) (C-6(4), No. 171) with a = 27.034(78) Angstrom, c = 9.540(19) Angstrom, V = 6041(27) Angstrom(3), Z = 6, and D-c = 1.246 g cm(-3) and was refined to R = 0.0671 on the basis of 2310 independent reflections. A correlation between the CD spectra of 2a and 2b and their solid-state structures is discussed.

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Documento generato il 22/09/20 alle ore 20:48:24