Double Oxygen Atom Centered Rhodium–Gold Clusters

Shan, Hui; Sharp, Paul R.

doi:10.1002/anie.199606351

Cited by 28 publications

(15 citation statements)

References 24 publications

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“…Heteronuclear m 3 -and m 4 -oxides have been prepared by reaction of [O(AuPPh 3 ) 3 ] + with [MCl 2 L 2 ] (M = Pd, Pt) or [Rh(m-Cl)(dien)] 2 . [43][44][45][46] With palladium and platinum the reaction with the gold complex in different molar ratios gives dinuclear or trinuclear complexes with a m 3 -oxide ligand as shown in Fig. 2.…”

Section: Oxygen-centred Complexesmentioning

confidence: 99%

Chalcogenide centred gold complexes

2008

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Chalcogenide-centred gold complexes are an important class of compounds in which a central chalcogen is surrounded by several gold atoms or gold and other metals. They have special characteristics such as unusual geometries, electron deficiency and properties such as luminescence or non-linear optical properties. The best known species are the trinuclear [E(AuPR3)3]+, 'oxonium' type species, that have high synthetic applicability, not only in other chalcogen-centred species, but in many other organometallic derivatives. The aurophilic interactions play an important role in the stability, preference for a particular geometry and luminescence properties in this type of derivatives (critical review, 117 references).

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Section: Oxygen-centred Complexesmentioning

confidence: 99%

Chalcogenide centred gold complexes

2008

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“…Oxygen connecting gold and rhodium [138] (Figure 2.30a) or sulfur bridging gold and platinum are some examples. In complexes [Au 2 Pt(m 3 -S) 2 (m-P $ P)] [P $ P ¼ dppm or dppf] (Figure 2.30b) it is possible to control the presence of aurophilic interactions between the two gold centers by changing the diphosphine; the gold-gold distance changes from 2.916(1) (P$P ¼ dppm) to 3.759(3) Å (P$P ¼ dppf) [139].…”

Section: Clustering Of Gold Atoms At One Centermentioning

confidence: 99%

Gold–Gold Interactions

Crespo

2008

Modern Supramolecular Gold Chemistry

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This chapter focuses mainly on closed shell gold(I) atoms which are found to feel attraction among themselves. This attraction is able to modify expected geometries or support one-, two-or three-dimensional arrays and also leads to interesting properties. Closed shell metal cations are expected to repel each other. Nevertheless, an important number of examples containing [d 8 -d 10 -s 2 ] interactions are known. Particularly strong evidence has been accumulated on the attraction between two or more d 10 shells. In the case of gold(I) such attraction between two or more monovalent gold(I) ions in compounds has been observed structurally for a long time. In these situations the gold centers approach each other to a distance of between 2.7 and 3.3 Å. This range includes the distance between gold atoms in gold metal and approaches, or even overlaps with the range of distances found in the few real Au-Au single bonds. Schmidbaur coined the name aurophilic attraction in 1990 and defined it as the unprecedented affinity between gold atoms even with closed-shell electronic configurations and equivalent electrical charges [1]. Since that moment, aurophilicity has become one of the hot topics in gold chemistry, at first with the aim of understanding such interaction, more recently because of the observation that it may play an important role in interesting properties, thus understanding and modulating aurophilic interactions could help to govern these properties, which include the optical behavior. Although different origins are possible for the luminescent emissions of coordination complexes, such as intraligand transitions (ILT), ligand to metal or metal to ligand charge transfer transitions (LMCT, MLCT) and metal centered (MCT) transitions, in many luminescent gold complexes the emissions have been related to the presence of aurophilic interactions.Information about aurophilicity and chemical situations in which it is observed may be found in different works that may be classified as those which analyse closed shell interactions in general [2], those focused on aurophilicity [1,3], and others which analyze the role of these interactions in coordination [4] and organometallic gold Modern Supramolecular Gold Chemistry: Gold-Metal Interactions and Applications. Edited by Antonio Laguna

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“…2ϩ 22 (M = Rh, Ir; LЈ 2 = cod, nbd). 85 The oxo ligand in these complexes is in an unusual trigonal pyramidal coordination environment evidently as a result of bonding interactions between the Au and Rh or Ir centers (Fig. 4 We first became aware of the oxo/chloro exchange chemistry of [(LAu) 3 (µ-O)] ϩ 17 when we observed exchange with LЈAuCl.…”

Section: Synthesesmentioning

confidence: 99%