Metal stabilized carbanions

New Rh derivatives of s-indacene active in dehydrogenative silylation of styrene

“…[(CO) 3 Cr(l-g 6 ,g 3 -Ind)Rh(COD)] (Ind = heptamethylindenyl) catalyzes the trimerization of various alkynes, the presence of (CO) 3 Cr being responsible of an increase of efficiency (factor of 10 3 ). This behaviour was mainly attributed to an enhanced coordinative insaturation at rhodium, an effect dubbed ''extra indenyl effect'' [8]. In the second example, we successfully employed the pentalene complex [Cp * Ru(l-g 5 ,g 3 -C 8 H 6 )Rh(COD)] (C 8 H 6 = pentalenediide) for the highly effective and selective dehydrogenative silylation of styrene with triethylsilane [9].…”

Synthesis and cyclic voltammetry of some new metal carbene substituted cyclopentadienyliron half sandwich complexes

“…This might have a significant bearing for areas such as catalysis [1][2][3][4][5][6], molecular electronics [7][8][9][10][11][12], nonlinear optics [13,14] and electron transfer chemistry [15]. Among the complexes without direct metal-metal bonds in particular those with connecting p systems are promising candidates for electronic interactions.…”

Synthesis and properties of bis(indenyl) derivatives of ytterbium and lutetium. Molecular structures of the complexes (C9H7)2Ln(μ-Cl)2Li(Et2O)2 (Ln = Yb, Lu) and [(C9H7)2YbCl2][Li(DME)3]

“…Ind Centr -Ln-Ind Centr bond angles are 131.12 (9) and 131.67(7)°, respectively, which indicates that both com pounds have wedge shaped sandwich structures. The Ln-C bond lengths in complexes 2 and 3 are in the ranges of 2.591(3)-2.652(2) and 2.579(2)-2.652(2) Å, respec tively.…”

“…These characteristic features are associated with the coordination nonrigidity of the indenyl ligand, its tendency to undergo haptotropic rearrangements, and the ability to form metal-ligand bonds of different nature depending on the electronic configuration of the central atom. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Recently, we have synthesized the first f transition metal complex with the µ η 5 :η 4 bridging indenyl ligand, whose coordination to two ytterbium atoms gives rise to the dinuclear mixed valence (Yb II /Yb III ) complex. 18 In addition, when investigating the reaction of the ytterbium bis(indenyl) complex (C 9 H 7 ) 2 Yb(THF) 2 with 2 {[(2,6 diisopropylphenyl)imino]methyl}pyridine, we have dis covered 19 the unusual insertion of the N=C double bond at the Yb-C 9 H 7 η 5 bond.…”