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Titolo:
[Pt(C equivalent to CR)4](2-) as double alkynylation reagents: Facile formation of binuclear bis(mu-alkynide) (M-Pt) and unsymmetrical trinuclear double bis(mu-alkynide) (M-Pt-Pt) complexes
Autore:
Berenguer, JR; Eguizabal, E; Falvello, LR; Fornies, J; Lalinde, E; Martin, A;
Indirizzi:
Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Dept Quim Inorgan, E-50009 Zaragoza, Spain Univ Zaragoza Zaragoza Spain E-50009 im Inorgan, E-50009 Zaragoza, Spain Univ La Rioja, Dept Quim, Logrono 26001, Spain Univ La Rioja Logrono Spain 26001 Rioja, Dept Quim, Logrono 26001, Spain
Titolo Testata:
ORGANOMETALLICS
fascicolo: 4, volume: 19, anno: 2000,
pagine: 490 - 496
SICI:
0276-7333(20000221)19:4<490:[ETCAD>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY STRUCTURE; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURES; HETERONUCLEAR COMPLEXES; DINUCLEAR COMPLEXES; PLATINUM COMPLEXES; COPPER(I); LIGANDS; REACTIVITY; SILVER(I);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Fornies, J Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Dept Quim Inorgan, E-50009 Zaragoza, Spain Univ Zaragoza Zaragoza Spain E-50009 E-50009 Zaragoza, Spain
Citazione:
J.R. Berenguer et al., "[Pt(C equivalent to CR)4](2-) as double alkynylation reagents: Facile formation of binuclear bis(mu-alkynide) (M-Pt) and unsymmetrical trinuclear double bis(mu-alkynide) (M-Pt-Pt) complexes", ORGANOMETAL, 19(4), 2000, pp. 490-496

Abstract

Treatment of (NBu4)(2)[Pt(C=CR)(4)].2H(2)O (R = t-Bu, 1a; SiMe3, 1b; Ph, 1c) with 1 equiv of the dicationic solvento species [Cp*M(PEt3)(acetone)(2)](ClO4)2 (M = Rh, Ir) results in double alkynyl transfer to give the binuclear compounds [(PEt3)Cp*M(mu-1 kappa C-0:Ca:C=CR)(2)Pt(C=CR)(2)] (M = Rh, 2;Ir, 3), in which the organometallic unit "cis-Pt(C=CR)(2)" is unusually stabilized by eta(2)-bis(alkyne) interact ions, as has also been confirmed for the related binuclear complex [(PPh3) Cp*Rh(mu-1 kappa C-a:eta(2)-C=CSiMe3)(2)Pt(C=CSiMe3)(2)], 4b, which has been prepared analogously. These binuclear tetraalkynyl complexes can be used as precursors to unusual bis(double-alkynide)-bridged trinuclear derivatives [(PEt3)Cp*M(mu-1 kappa C-a:eta(2)-C=CR)(2)Pt(mu-2 kappa C-a:eta(2)-C=CR)(2)Pt(C6F5)(2)] (M = Rh, 5; Ir, 6) by displacement reactions of thf from [cis-Pt(C6F5)(2)(thf)(2)]. An X-ray diffraction study confirms that in complex 5b (R = SiMe3) the mononuclear rhodium fragment "Cp*Rh(C=CSiMe3)(2)(PEts)" acts as a chelating bidentate ligand toward the alkynyl-bridged diplatinum organometallic unit Pt(mu-1 kappa C-a:eta(2)-C=CSiMe)(2)Pt(C6F5)(2).

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Documento generato il 11/07/20 alle ore 03:23:08