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Titolo:
CYCLOMETALATION OF 2-PHENYLANILINE AND (R)-ALPHA-METHYLBENYLAMINE BY PALLADIUM(II) ACETATE - X-RAY MOLECULAR-STRUCTURE OF [PD(2-(2'-NH2C6H4)C6H4)BR(PPH(3))]
Autore:
ALBERT J; GRANELL J; LUQUE A; MINGUEZ J; MORAGAS R; FONTBARDIA M; SOLANS X;
Indirizzi:
UNIV BARCELONA,DEPT QUIM INORGAN,DIAGONAL 647 E-08028 BARCELONA SPAIN UNIV BARCELONA,DEPT CRISTALLOG MINERAL & DIPOSITS MINERALS E-08028 BARCELONA SPAIN
Titolo Testata:
Journal of organometallic chemistry
fascicolo: 1, volume: 522, anno: 1996,
pagine: 87 - 95
SICI:
0022-328X(1996)522:1<87:CO2A(B>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORTHOMETALLATED PRIMARY AMINES; LIGAND-EXCHANGE REACTIONS; CYCLOPALLADATED COMPLEXES; ORTHO-PALLADATION; CRYSTAL-STRUCTURE; MASS-SPECTROMETRY; ORGANIC-SYNTHESIS; LIQUID-CRYSTALS; SECONDARY; CYCLOMETALATION;
Keywords:
PALLADIUM; CYCLOMETALATION; AMINES; X-RAY STRUCTURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
J. Albert et al., "CYCLOMETALATION OF 2-PHENYLANILINE AND (R)-ALPHA-METHYLBENYLAMINE BY PALLADIUM(II) ACETATE - X-RAY MOLECULAR-STRUCTURE OF [PD(2-(2'-NH2C6H4)C6H4)BR(PPH(3))]", Journal of organometallic chemistry, 522(1), 1996, pp. 87-95

Abstract

The action of palladium(II) acetate on the primary amines 2-phenylaniline and (R)-alpha-methylbenzylamine and subsequent treatment with LiBr allows the preparation of the corresponding cyclopalladated dimers [Pd(C-N)Br](2) (1a and 1b respectively). Mononuclear compounds [Pd(C-N)Br(L)], 3 (L = py-d(5)) and 2 (L = PPh(3)), have been obtained by reaction of 1 with py-d(5) and PPh(3). Addition of PPh, to chloroform solutions of 2 produces a rapid exchange between coordinated and free PPh(3). P-31{H-1} NMR at variable temperature suggests that this exchange proceeds for 2a through the fast equilibrium [Pd(C-N)Br(PPh(3))(2)] double left right arrow [Pd(C-N)Br(PPh(3))] + PPh(3), while the usual mechanism in substitution reactions in d(8) planar square complexes is involved in the case of 2b. The X-ray crystal structure of 2a has been determined. 2a crystallizes in the triclinic space group P (1) over bar with a = 12.182(3), b = 10.502(2), c = 9.998(2) Angstrom, alpha = 99.24(2), beta = 94.69(2) and gamma = 99.13(2)degrees.

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Documento generato il 28/09/20 alle ore 22:14:13