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Titolo:
DIPHOSPHINE BIFUNCTIONAL CHELATORS FOR LOW-VALENT METAL-IONS - CRYSTAL-STRUCTURES OF THE COPPER(I) COMPLEXES [CUCLL(2)(1)] AND [CUL(2)(1)][PF6] [L(1) EQUALS 2,3-BIS(DIPHENYLPHOSPHINO)MALEIC ANHYDRIDE]
Autore:
LEWIS JS; HEATH SL; POWELL AK; ZWEIT J; BLOWER PJ;
Indirizzi:
UNIV KENT,RES SCH BIOSCI CANTERBURY CT2 7NJ KENT ENGLAND UNIV KENT,RES SCH BIOSCI CANTERBURY CT2 7NJ KENT ENGLAND UNIV E ANGLIA,SCH CHEM SCI NORWICH NR4 7TL NORFOLK ENGLAND INST CANC RES,JOINT DEPT PHYS SUTTON SM2 5PT SURREY ENGLAND
Titolo Testata:
Journal of the Chemical Society. Dalton transactions
fascicolo: 5, , anno: 1997,
pagine: 855 - 861
SICI:
0300-9246(1997):5<855:DBCFLM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
TETRAHEDRANE CLUSTER; PHOSPHINE; LIGANDS; DERIVATIVES; PHCCO3(CO)9; ACTIVATION; CHEMISTRY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J.S. Lewis et al., "DIPHOSPHINE BIFUNCTIONAL CHELATORS FOR LOW-VALENT METAL-IONS - CRYSTAL-STRUCTURES OF THE COPPER(I) COMPLEXES [CUCLL(2)(1)] AND [CUL(2)(1)][PF6] [L(1) EQUALS 2,3-BIS(DIPHENYLPHOSPHINO)MALEIC ANHYDRIDE]", Journal of the Chemical Society. Dalton transactions, (5), 1997, pp. 855-861

Abstract

The chelating diphosphine 2,3-bis(diphenylphosphino)maleic anhydride (L(1)) reacted with CuCl to give [CuClL(2)(1)] 1a in which the copper is bound to three phosphorus atoms and one chlorine in a pseudo-tetrahedral structure, as demonstrated by X-ray crystallography. Compound L(1) reacted with [Cu(MeCN)(4)][PF6] to give the red salt [CuL(2)(1)][PF6] 1b in which the copper is bound by four phosphorus atoms of two chelating bidentate ligands, as demonstrated by X-ray crystallography. Addition of chloride ions to 1b quantitatively affords 1a. Complex 1a can be converted quantitatively into [CuL(2)(1)][NO3] 1c by treatment with AgNO3. These complexes reacted quantitatively with water, benzylamine and methanol to give the corresponding [CuL(2)(2)](+) 2, [CuL(2)(3)](+) 3 and [CuL(2)(4)](+) 4 where L(2) = 2,3-bis(diphenylphosphino)maleic acid and L(3) and L(4) are the monobenzylamide and monomethyl ester derivatives, respectively, of L(2). Uncomplexed L(1) can also be hydrolysed to L(2) or derivatised with benzylamine or methanol to give L(3) and L(4) respectively. Compounds L(2), L(3) and L(4) reacted with copper-(I) or -(II) salts to yield salts of 2, 3 and 4. This chemistry provides versatile routes to the synthesis of stable bioconjugates containing copper or radiocopper and of derivatised solids containing pendant diphosphine ligands.

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Documento generato il 28/11/20 alle ore 01:01:30