Di-μ-hydrido-hexadecacarbonylpentaosmium

The reductive activation of [M5C(CO)15](M = Ru or Os) and subsequent reactions of the dianion [Os5C(CO)14]2–, carbonylation of [M5C(CO)15](M = Ru or Os), and the crystal structures of [Os5C(CO)16], [N(PPh3)2]2[Os5C(CO)14], and [Os5C(CO)14{Au(PPh3)}2]

“…The autoclave was charged, sealed, and purged of any air by pressurising to ca. 50 atm with the reaction gas and then venting to the atmosphere, twice, before filling to the 9) 852( 10) 629( 7) 831( 9) 638( 7) 730( 11 12) 1564 (12) 784( 12) 950( 12) 116( 13) 1413(13) 2 301( 13) 1891 (13) 594 ( 13) -293( 13) -1 851( 12)…”

The Organometallic Chemistry of Carbon Dioxide

“…A further early transition metal complex was reported by Geoffroy et al; 45 the compound was prepared as shown in (70), which has been structurally characterized. This and several related compounds (71)(72)(73)(74)(75)(76) prepared in this way are identified in Table 4.…”

“…The compound, [(Ph 3 P) 2 N] + [HOs 3 (CO) 10 (CO 2 )Os 6 (CO) 17 ] (97), was characterized by Lewis, Johnson, and their co-workers. 53 Later, Guy and Sheldrick reported 73 the complete structural analysis of the compound, which showed C-O bond distances of 1.276(5) and 1.322(5) Å and O-Os bond distances of 2.115 (40) The next compound of this general type to be characterized was the trinuclear rhenium complex 98 characterized by Ziegler 55 and showing a sym-metrically bridged carboxyl group. Analytical and IR data suggested a bridging COOH group, but this has not been confirmed.…”

Electronic Stabilization of Trigonal Bipyramidal Clusters: the Role of the Sn(II) Ions in [Pt5(CO)5{Cl2Sn(μ-OR)SnCl2}3]3– (R = H, Me, Et, iPr)

“…Contradictory results have been found from the different 72e − TBPs considered in this paper. While PSEPT appropriately accounts for six M−M bonding electron pairs in 1−4, other TEC = 72 clusters are proved to feature nine M−M bonds in agreement with EAN rule (e.g., Os 5 clusters 41,42 ). The MO analysis points out that a basic difference between the two cases is the actual degree of involvement of d orbitals in skeletal bonding.…”