Inhaltszusammenfassung

Reaction of Ni(cdt) (cdt: 1,5,9-cyclododecatriene) with functionalized alkynes and subsequent reaction with ethylenediamines gives binuclear compounds of the type (diamine)Ni(mu-alkyne)Ni(alkyne) . Compounds with alkyne-diols (N boolean AND N)Ni-2(HOR(1)R(2)C-C=C-CR(1)R(2)OH)(2) show supramolecular stuctures in which two identical intramolecular and one intermolecular hydrogen bonds are realized. 1 and 2 (chelate ligand in each case N,N,N',N'-tetramethylethylenediamine, TMEDA, in 1 R(1) = R(2...Reaction of Ni(cdt) (cdt: 1,5,9-cyclododecatriene) with functionalized alkynes and subsequent reaction with ethylenediamines gives binuclear compounds of the type (diamine)Ni(mu-alkyne)Ni(alkyne) . Compounds with alkyne-diols (N boolean AND N)Ni-2(HOR(1)R(2)C-C=C-CR(1)R(2)OH)(2) show supramolecular stuctures in which two identical intramolecular and one intermolecular hydrogen bonds are realized. 1 and 2 (chelate ligand in each case N,N,N',N'-tetramethylethylenediamine, TMEDA, in 1 R(1) = R(2) = Me, in 2 R(1) = R(2) = Et) polymer-like chains are built up by connecting the binuclear units. Via two intermolecular hydrogen bonds per organometallic unit in 1 and via one intermoleculare hydrogen bond in 2 the chains are connected to give double chains. By substitution of one methyl group of TMEDA by hydrogen (3: R(1) = R(2) = Me) a polymerlike network is produced by connecting the polymer-like chains. In compound 4 in which one of the methyl groups of TMEDA is substituted by CH(2)CH(2)NMe(2) the polymer-like chains remain unconnected. In 5 (diamine=TMEDA, alkyne = (CH3)(3)C-C=C--CMe(2)OH) one intermolecular hydrogen bond per organometallic unit is observed forming again polymer-like chains that are independent of each other. » weiterlesen» einklappen

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