Ruthenium and osmium carbonyl clusters incorporating stannylene and stannyl ligands

Kabir, Shariff E.; Raha, Arun K.; Hassan, Mohammad R.; Nicholson, Brian K.; Rosenberg, Edward; Sharmin, Ayesha; Salassa, Luca

doi:10.1039/b805024d

Cited by 26 publications

(8 citation statements)

References 56 publications

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“…These bond parameters suggest that three SiPh 2 ligands are bonded to the central palladium atom giving rise to Si centers with distorted trigonal‐bipyramidal geometries 17. A similar μ 3 ‐coordination mode has recently been reported for germylene (GeR 2 ) and stannylene (SnR 2 ) ligands to three Ru atoms [Ru 3 (CO) 8 (μ‐SPh) 2 (μ 3 ‐EPh 2 )(EPh 3 ) 2 ] (E=Ge, Sn) 18. The {Pd 4 Si 3 } core is stabilized by bonds between Pd out and Si atoms that are weaker than Pd cent Si bonds, in addition to a d 10 –d 10 interaction between the Pd cent and Pd out atoms 19.…”

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confidence: 71%

Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

et al. 2008

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Eine ungewöhnliche Struktur: Die neuartigen Titelverbindungen (siehe Schema) wurden synthetisiert und vollständig charakterisiert. Der vierkernige Komplex enthält einen sechseckigen Pd4Si3‐Kern mit einem zentralen Pd‐Atom, drei äußeren Pd‐Atomen und drei verbrückenden Si‐Atomen in einer Ebene, während der hantelförmige achtkernige Pd‐Komplex aus zwei durch einen Diphosphanliganden verbrückten Pd4Si3‐Gruppen besteht.

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confidence: 71%

Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

et al. 2008

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“…More recently other tin-element oxidative-addition reactions have been exploited, for example Gárate-Morales and Fernández-G have prepared amine-containing osmium-tin compounds via the cleavage of the nitrogen-tin bond in aminostannanes [27][28][29]. Our group have shown that tetraphenylthiostannane is an excellent source for the inclusion of both tin and sulfur atoms into transition metal clusters [30], reaction of Ru 3 (CO) 12 with Ph 3 Sn-SPh affording bimetallic [Ru 3 (CO) 8 (SnPh 3 ) 2 (µ 3 -SnPh 2 )(µ-SPh) 2 ] resulting from both tin-sulfur and tin-carbon bond cleavage (Scheme 1) [30,31]. 3 (CO) 2…”

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confidence: 99%

Synthesis of new heterometallic complexes by tin–sulfur bond cleavage of pySSnPh3 (pySH = pyridine-2-thiol) at triruthenium and triosmium centres

Raha¹,

Ghosh²,

Hossain³

et al. 2011

Journal of Organometallic Chemistry

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“…[17] A similar m 3coordination mode has recently been reported for germylene (GeR 2 ) and stannylene (SnR 2 ) ligands to three Ru atoms [Ru 3 (CO) 8 (m-SPh) 2 (m 3 -EPh 2 )(EPh 3 ) 2 ] (E= Ge, Sn). [18] The {Pd 4 Si 3 } core is stabilized by bonds between Pd out and Si atoms that are weaker than Pd cent À Si bonds, in addition to a d 10 -d 10 interaction between the Pd cent and Pd out atoms. [19] The 31 P{ 1 H} NMR spectrum of 2 displayed a single signal (d = À2.41 ppm) flanked by satellite signals of 29 Si nuclei (J-(P,Si) = 22 Hz).…”

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Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

et al. 2008

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Late-transition-metal complexes with silylene (SiR 2 ) ligands have attracted considerable attention since the proposal of platinum-silylene intermediates in the [PtCl 2 (PEt 3 ) 2 ]-catalyzed reactions that convert organodisilanes into oligosilanes and the cyclic adducts into alkynes.[1] Mononuclear silylene complexes of platinum [2] and other late transition metals [3] were not isolated until some years later, probably because of the extremely high reactivity of most M = Si double bonds. Dinuclear complexes of late transition metals with bridging silylene ligands are more common.[4] The dinuclear platinum complex [{Pt(PR 3 )} 2 (m-SiHPh 2 ) 2 ] (PR 3 = PPh 3 , PCy 3 etc.) has been reported.[5] However, in spite of the stable coordination of bridging silylene ligands, complexes containing three or more metal atoms with bridging Si ligands have few precedents, [6] and those known are stabilized by electron-withdrawing CO and CNR ligands.[7] Braddock-Wilking and coworkers [8] and our group [9,10] have reported zero-valent triangular Pt 3 complexes, stabilized by bridging silylene and phosphine ligands. Chen, Shimada, and Tanaka employed 1,2-disilabenzene as a ligand and prepared trinuclear Pd complexes supported by the Si ligands.[11]Herein, we report the synthesis and unexpected structure of a planar tetranuclear Pd 0 complex with three bridging SiPh 2 ligands as well as facile exchange of the bridging silylene ligands to yield a dumbbell-shaped octapalladium complex composed of two Pd 4 units bridged by a diphosphine ligand. These complexes, composed of Pd 0 centers and electrondonating Si and phosphine ligands, possess a unique planar {Pd 4 Si 3 } core.Heating a mixture of a dipalladium complex with bridging diphenylsilyl ligands, [{Pd(PCy 3 )} 2 (m-h 2 -SiHPh 2 ) 2 ] (1), [12] The molecular structure of 2 was determined by singlecrystal X-ray diffraction (Figure 1). [14] Complex 2 has a hexagonal {Pd 4 Si 3 } core incorporating one central Pd atom,

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Ruthenium and osmium carbonyl clusters incorporating stannylene and stannyl ligands

Abstract: SummaryThe reaction of [Ru 3 (CO) Cluster 3 has a superficially similar planar metal core, but with a different bonding mode with respect to that of 1. The Ph 2 Sn group is bonded most closely to Os(2) and Os (3) [2.7862 (3)

Cited by 26 publications

References 56 publications

Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

Synthesis of new heterometallic complexes by tin–sulfur bond cleavage of pySSnPh3 (pySH = pyridine-2-thiol) at triruthenium and triosmium centres

Planar Tetranuclear and Dumbbell‐Shaped Octanuclear Palladium Complexes with Bridging Silylene Ligands

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