Two- and three-dimensional coordination polymers from the reaction of bis- and tris(2-aminoethyl)amine with titanium and zirconium alkoxides

H. Fric, M. Puchberger, U.S. Schubert

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Abstract

The reaction of bis(2-aminoethyl)amine with M(OiPr)4 (M = Ti, Zr) affords the chain-like coordination polymers [M2(OiPr)8-(H2NCH2CH2NHCH2 CH2NH2)]..., where only the NH2 groups of the amine are coordinated to the M2(OiPr)8 units. 2D NMR spectroscopy shows that the adducts dissoc. into the starting compds. when dissolved in CD2Cl2 but are slowly re-formed in soln. over a period of two weeks. Puckered layers of condensed six-membered rings of [Ti2(OiPr)8]3[N(CH2CH2NH2) 3]2 are formed when [Ti(OiPr)4] is treated with tris(2-aminoethyl)amine. The voids in the center of the rings are filled by non-coordinated Ti2(OiPr)8 guest mols. In contrast, chains of [Zr2(OiPr)8-(H2NCH2CH2NR'CH2 CH2NH2)] {R' = CH2CH2NH2[Zr2(OiPr)8-(HOiPr)]} are formed upon treatment of tris(2-aminoethyl)-amine with [Zr(OiPr)4].
Original languageEnglish
Pages (from-to)376-383
JournalEuropean Journal of Inorganic Chemistry
Volume2007
Issue number3
DOIs
Publication statusPublished - 2007

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