Synthesis and structure of a cobaltocenium cobaltacarborane zwitterion. Cobaltocenium and tetrahydrofuran derivatives of nido,closo-[2,3-(CH3)2C2B3H5]CoH[2,3-(CH3)2C2B4H4]

In search for new bonding modes of the methylenedithiolato ligand: novel tri- and tetra-metallic clusters

“…11 Similarly, [{η 5 -C 5 H 5 Co} 2 {µ-η 5 :η 5 -(µ-1,2-C 3 H 4 -1,2-C 2 B 3 H 3 )}], II, displays a planar C 2 B 3 ring sandwiched between two CpCo fragments with an unsaturated {-CHvCH-CH 2 -} fragment (Chart 1). 12 Apart from this, [{η 5 -C 5 Me 5 Re} 2 {µ-η 6 :η 6 -B 4 H 4 -Co 2 (CO) 5 }] 13 and [(Cp*Mo) 2 {μ-η 6 :η 6 -B 3 H 3 Te-Co 2 (CO) 5 }] 14 possess 6-membered metallacycles that show considerable deviation from planarity. Although, 8-membered ring systems containing lighter elements of the periodic table are known, such a system possessing a planar array of heavier transition metals and main group elements is unprecedented.…”

Computational study on second-order nonlinear optical (NLO) properties of a novel class of two-dimensional Λ- and W-shaped sandwich metallocarborane-containing chromophores

“…As a result of the absence of the crystal data, we compare the optimized structure of 1 with the derivate of system 1, (m(2,3)-1,3-C 3 H 4 -1,7,2,3eCp 2 Co 2 C 2 B 3 H 3 ) [39]. The optimized result shows that the three rings are all planar but not parallel.…”

Partial incorporation of a cyclopentadienyl ligand into a molybdaborane to form a molybdacarbaborane

“…Pipal et al reported the formation of the metallacarbaborane closo-1,7-[Co 2 (g-C 5 H 5 )C 2 (C 3 H 4 )B 3 H 3 ] from NaB 5 H 8 , NaC 5 H 5 and CoCl 2 at low temperatures in thf [21]. This metallacarbaborane cluster is a triple decker sandwich compound with a planar ''C 2 B 3 H 3 '' ligand bonded to an exo-cage bridging propylenyl group.…”