Organometallic polymers with gold(I) centers bridged by diphosphines and diacetylides

Jia, Guochen; Puddephatt, Richard J.; Scott, John D.; Vittal, Jagadese J.

doi:10.1021/om00033a032

Cited by 128 publications

(94 citation statements)

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“…The cis-geometry observed leads to some steric repulsion between the t-BuCFCgroups in that the angles P(1)-Au(1)-C(l) = 169.0(3)" and P(2)-Au(2)-X(7) = 176.6(3)" are distorted from the ideal value of 180" (24). Short Au..Au contacts in otherwise linear gold(1) complexes are common and, although longer than conventional bonds, are believed to result from a weak relativistic bonding force (22)(23)(24)(25)(26)(27)(28)(29)(30). The methylene carbon atom of the diphosphine ligand is situated above the Au2P2C2 plane.…”

Section: Resultsmentioning

confidence: 99%

“…Precession and Weissenberg photographs established the space group (17) and preliminary cell dimensions. The crystal density was measured by the neutral buoyancy method in a mixture of pentane and 1,2-dibromoethane; ~a t a collection of two symmetry equivalents was carried out on an Enraf-Nonius CAD4F diffractometer (28) in 0-20 scan mode at variable scan speeds within a maximum time per datum of 60 s. Background estimates were made at 25% scan extensions on each side. Standard reflections were monitored every 180 min of X-ray exposure time.…”

Section: X-ray Crystallographymentioning

confidence: 99%

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Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]

Payne¹,

Ramachandran²,

Puddephatt³

1995

Can. J. Chem.

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Abstract:The complex [Au2(p,-dppm)(C=Ct-Bu),], 1, dppm = Ph,PCH,PPh,, is formed by reaction of [AuC=Ct-Bu] with dppm. Compound 1, as an acetone solvate, crystallizes in the monoclinic space group P2,lc with cell dimensions a = 14.047(1), b = 16.124(1), c = 17.140(3) A, P = 103.17(2)" and four formula units per cell. The crystal and molecular structures of this salt were solved by X-ray diffraction techniques using 2634 counter data with I > 2u(I). Refinement of 278 variables by full-matrix least squares converged at an agreement factor R = 0.023. Thermolysis of complex 1 in refluxing toluene led to intermolecular elimination of t-Bu-CH, by combination of a t-BuC--C ligand of one molecule of 1 with a proton from the CH,P, group of a second, and formation of the stable tetragold(1) complex [Au,(p,,-Ph,PCHPPh,)(p,-dppm)(C=Ct-Bu),] 2, which was characterized by its spectroscopic properties.Key words: acetylide complexes, gold complexes, X-ray crystallography, nmr spectroscopy, bis(dipheny1phos-phino)methane. Mots cl6s : complexes dlacCtylures, complexe d'or, cristallographie par rayons X, spectroscopie rmn, bis(diph6-ny1phosphino)mCthane.[Traduit par la rkdaction]

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Crystallographymentioning

confidence: 99%

Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]

Payne¹,

Ramachandran²,

Puddephatt³

1995

Can. J. Chem.

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“…[237] Wegen der eingebauten P-Atome sind die Polymerstäbe zwar nicht streng linear, aber Modelle lassen darauf schließen, dass eine lineare Anordnung um die Goldzentren vorliegt und der Diphosphanspacer anti-konfiguriert ist. In Chlorkohlenwasserstoffen sind die Polymere schwach löslich, und ihre mittleren Molekulargewichte liegen bei 15 000-18 000.…”

Section: Metallalkinyle: Mn Reunclassified

Metall‐Alkinyl‐σ‐Komplexe: Synthesen und Materialien

Long

Williams

2003

Angewandte Chemie

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Metallalkinylkomplexe bergen eine große Anziehungskraft für die Synthesechemie, die Strukturchemie und die Materialwissenschaften, sodass mittlerweile eine Vielzahl von Reaktionen zur M‐CC‐Verknüpfung mit einer ganzen Skala von Übergangsmetall‐ und Alkinylreagentien entwickelt wurde. Einige Methoden sind breit anwendbar, andere beschränken sich auf ein spezielles Metall oder Substrat. Wegen der linearen Geometrie der Alkinyleinheit und ihrem ungesättigten Charakter sind die Metallalkinyle attraktive Bausteine für molekulare Drähte und polymere metallorganische Materialien, die interessante physikalische Eigenschaften wie flüssigkristallines Verhalten, optische Nichtlinearität, Lumineszenz und elektrische Leitfähigkeit aufweisen können. Dieses einzigartige Spektrum an Eigenschaften steht als treibende Kraft hinter der intensiven Erforschung von Metall‐Alkinyl‐σ‐Komplexen. Die Entwicklung und Fortschritte insbesondere der letzten zehn Jahre werden in diesem Aufsatz zusammengefasst.

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“…The 'simple' alkynyls, [AuCϵCR] n , probably do not give linear polymers, although structural information is available only for R = Bu t ; in this case, pairs of intercalated hexameric rings are formed (15). A possible improvement is to use an aromatic para-dialkyne to obtain [-Au-CϵC-Ar-CϵC-] n , which can be obtained from Me 2 SAuCl and the di-yne (16). Alternatively, a para-di-yne may be used in combination with a para-di-isonitrile as the linking group: [-Au-CϵC-Ar-CϵC-Au-CNAr'NC-] n (14).…”

Section: Conjugated Rod Polymersmentioning

confidence: 99%

Organogold chemistry: III applications

Parish

1998

Gold Bull

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Gold forms a wide variety of organic derivatives, whose preparation, structures and reactions were reviewed in Parts I and II. Here some applications of the compounds are discussed, in the areas of organic synthesis, catalysis, liquid crystals, MOCVD, luminescence, and chemotherapy.Previous articles in this series have reviewed the diverse types of known organogold compounds (1) and the varied reactions which they undergo (2). Compared to those of other precious metals, compounds of gold feature in rather few applications, although interest has increased over recent years. In this contribution, these applications are reviewed, together with some suggestions for further developments.

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Organometallic polymers with gold(I) centers bridged by diphosphines and diacetylides

Cited by 128 publications

References 1 publication

Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]

Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]

Metall‐Alkinyl‐σ‐Komplexe: Synthesen und Materialien

Organogold chemistry: III applications

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Organometallic polymers with gold(I) centers bridged by diphosphines and diacetylides

Cited by 128 publications

References 1 publication

Gold-acetylide chemistry: the structure of the complex [Au2(μ-dppm) (C≡C—CMe3)2]

Gold-acetylide chemistry: the structure of the complex [Au2(μ-dppm) (C≡C—CMe3)2]

Metall‐Alkinyl‐σ‐Komplexe: Synthesen und Materialien

Organogold chemistry: III applications

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Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]

Gold-acetylide chemistry: the structure of the complex [Au₂(μ-dppm) (C≡C—CMe₃)₂]