Metal-Organic Framework MIL-101(Fe)-NH2 as an Efficient Host for Sulphur Storage in Long-Cycle Li-S Batteries

Complexes of metals with organotellurium compounds and nanosized metal tellurides for catalysis, electrocatalysis and photocatalysis

The significance of phosphoniocarbynes in halocarbyne cross-coupling reactions

The lithiocarbyne [W(≡CLi)(CO)2 (Tp*)] (Tp*=hydrotris(3,5-dimethylpyrazol-1-yl)borate) reacts with [PtCl2 (L2 )] (L2 =1,5-cyclo-octadiene, norbornadiene) to furnish ditungsten ethanediylidyne complexes, [W2 {μ-C2 Pt(L2 )}(CO)4 (Tp*)2 ], wherein a trigonal platinum(0) center unsymmetrically ligates one W≡C bond in the solid state but rapidly shimmies between the two W≡C bonds in solution. The η4 -dienes are displaced by monodentate CO or isocyanide ligands to provide derivatives where both W≡C bonds coordinate to a single Pt0 center, attended by significant distortion of the WCCW spine.

The Platinum Shimmy: Flexible Platinum(0) Coordination to a Ditungsten Ethanediylidyne.

The tungsten-platinum μ-carbido complex [WPt(μ-C)Br(CO)2(PPh3)2(Tp*)] (Tp* = hydrotris(dimethylpyrazol-1-yl)borate) undergoes facile substitution of both bromide and phosphine ligands to afford a diverse library of μ-carbido complexes that includes [WPt(μ-C)Br(CO)2(dppe)(Tp*)], [WPt(μ-C)(NCMe)(CO)2(PPh3)2(Tp*)]OTf, [WPt(μ-C)(S2CNEt2)(CO)2(PPh3)(Tp*)], [WPt(μ-C)(bipy)(CO)2(PPh3)(Tp*)]PF6, [WPt(μ-C)(phen)(CO)2(PPh3)(Tp*)]PF6, [WPt(μ-C)(terpy)(CO)2(Tp*)]PF6, [WPt(μ-C)(CO)2(PPh3)(Bp*)(Tp*)], [WPt(μ-C)(CO)2(PPh3)(Tp*)2] and [WPt(μ-C)(bipy)(CO)2(PPh3)(Bm)(Tp*)], most of which have been structurally charcaterised.

Heterobimetallic μ2-carbido complexes of platinum and tungsten.

The new tungsten selenocarbonylate [NEt4][W(CSe)(CO)2(Tp*)] (Tp* = hydrotris(dimethylpyrazolyl)borate) reacts with group 11 reagents to provide σ–π or isoselenocarbonyl complexes of the form [WM(μ-CSe)(CO)2(PR3)n(Tp*)] (M = Cu, Ag, Au; R = Ph, Cy; n = 1,3) depending on the phosphine stoichiometry or steric bulk. With [Cu(NCMe)4]PF6 and 1,4,7-trithiacyclononane ([9]aneS3) however, the tetrametallic species [WCu3(μ-CSe)(CO)2([9]aneS3)3(Tp*)](PF6)2 is obtained in which one Cu coordinates to the WC triple bond and two coordinate to the Se atom.

/pdf/new-binding-modes-for-cse-coinage-metal-coordination-to-a-4rr2w63q7c.pdf

New binding modes for CSe: coinage metal coordination to a tungsten selenocarbonyl complex.

https://openresearch-repository.anu.edu.au/bitstream/1885/209274/4/10.1039_c9cc08172k.pdf

A heterobimetallic cumulenic μ-carbido complex

https://openresearch-repository.anu.edu.au/bitstream/1885/206225/4/10.1039_c9cc07757j.pdf

Bridging selenocarbonyl ligands: an open and shut case

The first examples of bi- and polynuclear tellurocarbonyl complexes were obtained from the reactions of [W(≡CTe)(CO)2 (Tp*)]NEt4 (Tp*=hydrotris(dimethylpyrazolyl)borate) with [MCl(PCy3 )]/TlPF6 (M=Cu, Au) or [Au2 Cl2 (μ-dppm)], which afford [WM(μ-CTe)(PCy3 )(CO)2 (Tp*)] (M=Cu, Au) and [WAu2 (μ-CTe)(μ-dppm)(CO)2 (Tp*)]3 (PF6 )3 . In all cases it is specifically the tellurocarbonyl that assumes a bridging, but in each case distinct, role including examples of isotellurocarbonyl, semi-bridging and σ-π coordination and combinations thereof. Tetrametallic complexes bridged by C2 Te and C2 Te2 ligands are also described.

/pdf/bi-and-polynuclear-transition-metal-carbon-tellurides-2chnmpgmjh.pdf

Bi‐ and Polynuclear Transition‐Metal Carbon Tellurides

In contrast to the ubiquity of transition-metal carbonyl, and (to a lesser extent) thiocarbonyl complexes, transition-metal complexes of carbon monoselenide Ln MCSe and monotelluride Ln MCTe remain scarce. The last few years, however, have seen notable steps towards expanding this chemistry, specifically with regards to new systematic studies on homologous sets of chalcocarbonyl complexes Ln MCE (E=O, S, Se, Te), the first reports of new bi- and polynuclear CSe and CTe bridging complexes and a confluence with metal carbido chemistry. Herein the properties, syntheses and reactions of these rare but fundamentally intriguing compounds are discussed.

Lachlan J. Watson

Papers

New binding modes for CSe: coinage metal coordination to a tungsten selenocarbonyl complex.

A heterobimetallic cumulenic μ-carbido complex

Bridging selenocarbonyl ligands: an open and shut case

Bi‐ and Polynuclear Transition‐Metal Carbon Tellurides

Advances in transition metal seleno‐ and tellurocarbonyl chemistry