B-frame supported bimetallics. [(PMe2ph)2PtB9H11Ru(η6-isoPrC6H4Me)] and [(PMe2ph)2PtB9H9Ru(η6-isoPrC6H4Me)]; an interesting pair of electron-deficient nido and closo geometries1We are pleased to be able to dedicate this paper to Ken Wade, whose Rules have been instrumental and inspirational in the development of boron-containing cluster chemistry over the quarter century since their original formulation.1

[7,7-(PMe 2 Ph) 2 -9-( η 6 - iso PrC 6 H 4 Me)-7,9-PtRuB 9 H 11 ] has a formal closo Wadian cluster-electron count, but a nido geometry, whereas [1-( η 6 - iso PrC 6 H 4 Me)-4,4-(PMe 2 Ph) 2 -1-4-RuPtB 9 H 9 ], which does have a closo geometry, has a formal sub- closo cluster electron count; both compounds are formed in the reaction between [6-( η 6 - iso PrC 6 H 4 Me)- nido -6 RuB 9 H 13 ], KH and [PtCl 2 (PMe 2 Ph) 2 ].