Inorg. Chem. 1988, 27, 3880-3885
3880
that is self-evident in t h e structure of 6 under t h e constraints of THF solution) and was followed after addition of hexane (equal volume) by slow (12 h) deposition of bright yellow crystals. This crystallographic symmetry. The Ru2 distances of 3.247 (4) and 3.313 A (6)both lie outside bonding range; i.e. t h e molecules product was shown by using X-ray diffractometry* to be the model “broken-up” Ru clusters on a silica ~ u r f a c e .Most ~ sigbinuclear complex Ru2(C0)3(0COCF,)(p-OSiMe2CH2PPh2)2nificantly, the Ru-0 distances (2.14 A, 6 mean 2.1 1 A, 4) confirm (p-OCOCF,) (4): the molecular structure is illustrated in Figure that the estimatelo of 2.17 A from EXAFS data for a decomposed 1. Simultaneously it was discovered that synthesis6 of complex ruthenium cluster on alumina is essentially correct, reinforce t h e 2 by action of CF3C02Hon [RU(CO),(~-S~M~~CH,PP~~)]~ (5) assertion4 that “EXAFS results are in agreement with those obis accompanied by formation of a minor constituent (
