Tetracarbon metallocarboranes. 2. Thermal rearrangement of 14-vertex cage systems. Crystal structures of three tetracarbon diferracarborane isomers, (.eta.5-C5H5)2Fe2(CH3)4C4B8H8

The structure of μ-(η-cyclopentadienyl)-bis[(η-cyclopentadienyl)nickel(III)] tetrafluoroborate at 190 and 295 K

“…Since then some carboraneand thiocarborane-containing triple-decker complexes with fillings of Co and Fe respectively have been structurally characterized (Beer, Miller, Sneddon, Grimes, Mathew & Palenik, 1973;Pipal & Grimes, 1978;Siebert, Renk, Kinberger, Bochmann & Krfiger, 1976). An interesting group of Fe (Maxwell, Weiss, Sinn & Grimes, 1977) and Co (for example : Grimes, Zalkin & Robinson, 1976;Callahan, Strouse, Sims & Hawthorne, 1974;Pipal & Grimes, 1979)compounds with boron and carborane cages as a type of middle layer have also been studied. Recently, the structure of a tetra-decker complex, (CsHs)FeLFeLFe(CsHs), where L = SB(CH3)C(C2Hs)C(C2Hs)B(CH3) , was reported (Siebert, B6hie & KrUger, 1980).…”

Supraicosahedral polyhedra in carboranes and metallacarboranes: The role of local vertex environments in determining polyhedral topology and the anomaly of 13-vertex closo polyhedra

“…Thus four isomers of (g 5 -C 5 H 5 ) 2 Fe 2 C 4 B 8 H 8 (CH 3 ) 4 have been structurally characterized [45]. The two initially produced isomers do not have 14-vertex deltahedral structures but instead structures with either a quadrilateral or pentagonal open face.…”

14‐Vertex Heteroboranes with 14 Skeletal Electron Pairs: An Experimental and Computational Study

“…To the best of our knowledge this is the first time such a cluster structure has been reported. It is clearly distinct from the bicapped hexagonal antiprism (bha) typical of 14-v 15-SEP species, [17,18] again reflecting the unique structures of hypercloso clusters. Formally, a bha structure could be formed from this unique polyhedron by making the 4-5 connection and applying a d-sd process to the 1-2-10-5 diamond.…”