CLUSTER CHEMISTRY .82. REACTIONS BETWEEN RU3(MU-DPPM)(CO)10 AND 1-ALKYNES AND RELATED CHEMISTRY - CRYSTAL-STRUCTURES OF RU3(MU-H)(MU-3-C2C6F5)(MU-DPPM)(CO)7, RU3(MU-3-PPHCH2PPH(C6H4))(MU-C4H2PH2)(CO)6, AURU3(MU-3-C2PH)(MU-DPPM)(CO)7(P(C6H4ME-P)3) AND RU2(MU-I)(MU-DPPM)(MU-C2PH)(CO)4

Reactions between Ru3(mu-dppm)(CO)10 (1) and 1-alkynes, HC2R (R = Ph, (t)Bu, SiMe3, C6F5), have given 75-90% yields of Ru3(mu-H)(mu-3-C2R)(mu-dppm)(CO)7 (3-6); the related complexes Ru3(mu-H)(mu-3-C2Ph)(mu-dppm)(CO)6(PPh3) and Ru3(mu-H)(mu-3-C2Ph)(mu-dpam)(CO)7 have also been obtained, while addition of Au(C2Ph)(PR3) to 1 gave AuRu3(mu-3-C2Ph)(mu-dppm)(CO)7(PR3)(R=Ph, 10; C6H4Me-p, 11). A reaction between Ru3{mu-3-PPhCH2PPh(C6H4)}(CO)9 and HC2Ph afforded Ru3{mu-3-PPhCH2PPh(C6H4)}(mu-C4H2Ph2)(CO)6 (9), containing a metallacyclopentadiene unit. The complex Ru2(mu-I)(mu-dppm)(mu-C2Ph)(CO)4 (12) was obtained by treating 3 with I2. The molecular structures of 6, 9, 11 and 12 were determined by single-crystal X-ray studies.