Unusual lithium coordinated platinum and rhodium hydride dimers

Two unusual lithium coordinated binuclear platinum- and rhodium-hydride complexes [M(dippe)(H)]2·LiHBEt3 were synthesized and characterized by NMR spectroscopy and X-ray crystallography. Not only does the lithium ion interact with the metal hydrides, but also with the B–H bond of the borohydride.

Graphical abstractAn unusual binuclear platinum-hydride complex [Pt(dippe)(H)]2.LiHBEt3 shows a lithium ion bridging the two platinum hydrides and coordinating to the hydride of the HBEt3 unit. A related compound, [Rh(dippe)]2(μ-H)2·LiHBEt3], has also been prepared and structurally characterized, but now shows bridging hydrides coordinated to the LiHBEt3 moiety.Figure optionsDownload full-size imageDownload as PowerPoint slide