Reactions of [Ru3(CO)10( μ-dppm)] and [Ru3(CO)9{μ3-η3-Ph2PCH2P(C6H4)}] with PPh2H:: X-ray structures of [(μ-H)Ru3(CO)6(μ3-η2-PPh2CH2PPh)(μ-PPh2)2] and [Ru3(CO)5(μ-dppm)(μ-PPh2)2(μ3-PPh)]

Treatment of [Ru-3(CO)(10)(mu-dppm)] (1) with PPh2H in refluxing heptane afforded four triruthenium compounds [Ru-3(CO)(6)-(mu-CO)(mu(3)-CH2PPh)(mu-PPh2)(2)] (3), [(mu-H)Ru-3(CO)(6)(mu(3)-eta(2)-PPh2CH2PPh)(mu-PPh2)(2)] (4), [(p-H)(2)Ru-3(CO)(5)(mu-dppm)(mu(3)-PPh)(p-PPh2)(2)] (5) and [(mu-H)(2)Ru-3(CO)(6)(mu-dppm)(p-PPh2)(2)] (6). Compound 4 can also be prepared in relatively higher yield from the reaction of [Ru-3(CO)(9){mu(3)-eta(3)-PPhCH2P(Ph)(C6H4)}] (7) with PPh2H in refluxing THF. The new compounds were characterized by spectroscopic data along with single-crystal X-ray diffraction studies on 4 and 5. Compound 4 consists of a triangular cluster of ruthenium atoms containing one mu(3)-eta(2)-PPh2CH2PPh ligand and two mu-PPh2 ligands whereas 5 is an open triangular cluster bearing one mu(3)-PPh and two mu-PPh2 ligands. (c) 2005 Elsevier Ltd., All rights reserved.