NMR STUDIES OF FLUXIONAL RHENIUM CARBONYLCOMPLEXES OF 2,6-DIACETYLPYRIDINE (DAP),fac-[ReX ( CO )a(D AP)]

KG Orrell, AG Osborne, V Sik, Mateus Webba da Silva

Research output: Contribution to journalArticle

Abstract

2,6-Diacetylpyridine (DAP) reacted with pentacarbonylhalogeno rhenium(l)complexes under mild conditions to form stable octahedral complexes of the type fac-[ReX(CO)3(DAP)] (X = CI, Br or I) in which the DAP acts as a bidentate chelate ligand.In solution these complexes are fluxional with DAP oscillating between equivalent bidentatebonding modes by a twist mechanism involving the breaking/making of two Re--O bonds.Rates and activation energies of these fluxions have been investigated by NMR methods. 2-Acetylpyridine (AP) reacts with bromopentacarbonylrhenium(I) to form the non-fluxionalchelate complex fac-[ReBr(CO)3(AP)].
LanguageEnglish
Pages2797-2802,
JournalPolyhedron
Volume14
Publication statusPublished - 1995

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Rhenium
Carbon Monoxide
Nuclear magnetic resonance
Activation energy
Ligands
3-acetylpyridine
2-acetylpyridine

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@article{bc4128b58b184b9c9dd9e5ea82bf19d1,
title = "NMR STUDIES OF FLUXIONAL RHENIUM CARBONYLCOMPLEXES OF 2,6-DIACETYLPYRIDINE (DAP),fac-[ReX ( CO )a(D AP)]",
abstract = "2,6-Diacetylpyridine (DAP) reacted with pentacarbonylhalogeno rhenium(l)complexes under mild conditions to form stable octahedral complexes of the type fac-[ReX(CO)3(DAP)] (X = CI, Br or I) in which the DAP acts as a bidentate chelate ligand.In solution these complexes are fluxional with DAP oscillating between equivalent bidentatebonding modes by a twist mechanism involving the breaking/making of two Re--O bonds.Rates and activation energies of these fluxions have been investigated by NMR methods. 2-Acetylpyridine (AP) reacts with bromopentacarbonylrhenium(I) to form the non-fluxionalchelate complex fac-[ReBr(CO)3(AP)].",
author = "KG Orrell and AG Osborne and V Sik and {Webba da Silva}, Mateus",
year = "1995",
language = "English",
volume = "14",
pages = "2797--2802,",
journal = "Polyhedron",
issn = "0277-5387",
publisher = "Elsevier",

}

NMR STUDIES OF FLUXIONAL RHENIUM CARBONYLCOMPLEXES OF 2,6-DIACETYLPYRIDINE (DAP),fac-[ReX ( CO )a(D AP)]. / Orrell, KG; Osborne, AG; Sik, V; Webba da Silva, Mateus.

In: Polyhedron, Vol. 14, 1995, p. 2797-2802,.

Research output: Contribution to journalArticle

TY - JOUR

T1 - NMR STUDIES OF FLUXIONAL RHENIUM CARBONYLCOMPLEXES OF 2,6-DIACETYLPYRIDINE (DAP),fac-[ReX ( CO )a(D AP)]

AU - Orrell, KG

AU - Osborne, AG

AU - Sik, V

AU - Webba da Silva, Mateus

PY - 1995

Y1 - 1995

N2 - 2,6-Diacetylpyridine (DAP) reacted with pentacarbonylhalogeno rhenium(l)complexes under mild conditions to form stable octahedral complexes of the type fac-[ReX(CO)3(DAP)] (X = CI, Br or I) in which the DAP acts as a bidentate chelate ligand.In solution these complexes are fluxional with DAP oscillating between equivalent bidentatebonding modes by a twist mechanism involving the breaking/making of two Re--O bonds.Rates and activation energies of these fluxions have been investigated by NMR methods. 2-Acetylpyridine (AP) reacts with bromopentacarbonylrhenium(I) to form the non-fluxionalchelate complex fac-[ReBr(CO)3(AP)].

AB - 2,6-Diacetylpyridine (DAP) reacted with pentacarbonylhalogeno rhenium(l)complexes under mild conditions to form stable octahedral complexes of the type fac-[ReX(CO)3(DAP)] (X = CI, Br or I) in which the DAP acts as a bidentate chelate ligand.In solution these complexes are fluxional with DAP oscillating between equivalent bidentatebonding modes by a twist mechanism involving the breaking/making of two Re--O bonds.Rates and activation energies of these fluxions have been investigated by NMR methods. 2-Acetylpyridine (AP) reacts with bromopentacarbonylrhenium(I) to form the non-fluxionalchelate complex fac-[ReBr(CO)3(AP)].

M3 - Article

VL - 14

SP - 2797-2802,

JO - Polyhedron

T2 - Polyhedron

JF - Polyhedron

SN - 0277-5387

ER -