Organometallic NLO-Materials Based on Acetyl and Ethynyltolanes as Rigid ROD Intermediates

Synthesis of Polyenes That Contain Mesogenic Side Chains via the Living Polymerization of 4-(Ferrocenylethynyl)-4‘-ethynyltolan

“…Whereas even low molecular weight 1,1′-ferrocendiyl bridged p-(ferrocenylethynyl)tolans suffer from significantly decreased solubility, 16 poly(4-(ferrocenylethynyl)-4′-ethynyltolans) prepared by ROMP exhibit a surprisingly high solubility in common organic solvents such as toluene, benzene, methylene chloride, tetrahydrofuran, etc., allowing the synthesis of highly soluble, rigid poly(4-(ferrocenylethynyl)tolans) bound to a conjugated main chain polyene up to a molecular weight of 25 000.…”

New Soluble Bis[nona-, octa-, and pentamethylferrocenes] as “Molecular Wires” with a Metal-to-Metal Distance of up to 40 Å

“…In this contribution we report on the synthesis of soluble methylated biferrocenes with increased (up to 40Å) metal-to metal distances, using standard Wittig and/or Wittig−Horner olefination procedures . The bridging ligands were selected to be phenylene−vinylene oligomers, which combine chemical stability with good charge conducting properties in comparison to oligoene, oligoyne, and oligophenyleneyne compounds …”

Reaction of ruthenium and iron alkynyl complexes with [Mo2(CO)4(η-C5H5)2] ‡

“…The preparation and reactivity of these complexes has not been adequately reviewed since Nast 1 in 1982 but their bonding has attracted much interest. 2 The putative application in materials synthesis [3][4][5][6][7][8][9][10][11] has been a major driving force for the current interest in metalloalkynes. Our interest, in particular, is the reactivity of the dimetalloalkynes or ethyne-1,2-diyl complexes.…”