Flexible Platinum(0) Coordination to a Ditungsten Ethanediylidyne. Issue 24 (8th May 2019)

• Record Type: Journal Article
• Authors: Frogley, Benjamin J.; Hill, Anthony F.
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 24(2019)
• Page Start: 8044
• Page End: 8048
• Publication Date: 2019-05-08
• Subjects: bis(carbyne)s -- carbido ligands -- carbynes -- dicarbido ligands -- polymetallic compounds; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201902116
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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 η 4 ‐dienes are displaced by monodentate CO or isocyanide ligands to provide derivatives where both W≡C bonds coordinate to a single Pt 0 center, attended by significant distortion of the WCCW spine. Abstract : The platinum shimmy : The coupling of two μ‐carbido ligands affords a rare example of a ditungsten ethandiylidyne W≡C−C≡W. This species displays a range of unusual coordination modes to extraneous metals.