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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14227

Title: Cluster Expansion Reactions of Group 6 and 8 Metallaboranes Using Transition Metal Carbonyl Compounds of Groups 7-9
Authors: GEETHARANI, K
BOSE, SK
SAHOO, S
VARGHESE, B
MOBIN, SM
GHOSH, S
Keywords: CUBANE-TYPE CLUSTERS
RAY CRYSTAL-STRUCTURES
CP-ASTERISK
STRUCTURAL-CHARACTERIZATION
ELECTRONIC-STRUCTURES
BORYLENE COMPLEXES
CHEMISTRY
FRAGMENT
ETA(5)-C5ME5
MOLYBDENUM
Issue Date: 2011
Publisher: AMER CHEMICAL SOC
Citation: INORGANIC CHEMISTRY,50(12)5824-5832
Abstract: The reinvestigation of an early synthesis of heterometallic cubane-type clusters has led to the isolation of a number of new clusters which have been characterized by spectroscopic and crystallographic techniques. The thermolysis of [(Cp*Mo)(2)B(4)H(4)E(2)] (1: E = S; 2: E = Se; Cp* = eta(5)-C(5)Me(5)) in presence of [Fe(2)(CO)(9)] yielded cubane-type clusters [(Cp*Mo)(2)(mu(3)-E)(2)B(2)H(mu-H){Fe(CO)(2)}(2)-Fe(CO)(3)], 4 and 5 (4: E = S; 5: E = Se) together with fused clusters [(CP*Mo)(2)B(4)H(4)E(2)Fe(CO)(2)Fe(CO)(3)] (8: E = S; 9: E = Se). In a similar fashion, reaction of [(Cp*RuCO)(2)B(2)H(6)], 3, with [Fe(2)(CO)(9)] yielded [(Cp*Ru)(2)(mu(3)-CO)(2)-B(2)H(mu-H){Fe(CO)(2)}(2)Fe(CO)(3)], 6, and an incomplete cubane cluster [(mu(3)-BH)(3)-(Cp*Ru)(2){Fe(CO)(3)}(2)], 7. Clusters 4-6 can be described as heterometallic cubane clusters containing a Fe(CO)(3) moiety exo-bonded to the cubane, while 7 has an incomplete cubane [Ru(2)Fe(2)B(3)] core. The geometry of both compounds 8 and 9 consist of a bicapped octahedron [MO(2)Fe(2)B(3)E] and a trigonal bipyramidal [Mo(2)B(2)E] core, fused through a common three vertex [Mo(2)B] triangular face. In addition, thermolysis of 3 with [Mn(2)(CO)(10)] permits the isolation of arachno-[(Cp*RuCO)(2)B(3)H(7)], 10. Cluster 10 constitutes a diruthenaborane analogue of 8-sep pentaborane(11) and has a structural isomeric relationship to 1,2-[{Cp*Ru}(2)(CO)(2)B(3)H(7)].
URI: http://dx.doi.org/10.1021/ic200802c
http://dspace.library.iitb.ac.in/jspui/handle/100/14227
ISSN: 0020-1669
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