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A coordination polymer with unusual structural features from imidazolylbutyric acid and titanium isopropoxide.

Czakler M, Puchberger M, Artner C, Schubert U - Monatsh. Chem. (2014)

Bottom Line: The coordination polymer [Ti(OiPr)3(OOCCH2CH2CH2C3N2H3)] n was prepared from 4-(imidazol-1-yl)butyric acid and titanium isopropoxide.The structure of the compound is remarkable, as the carboxylate group is coordinated in a chelating manner and no dimerization of the Ti(OiPr)3 groups through OR bridges was observed.

View Article: PubMed Central - PubMed

Affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.

ABSTRACT

Abstract: The coordination polymer [Ti(OiPr)3(OOCCH2CH2CH2C3N2H3)] n was prepared from 4-(imidazol-1-yl)butyric acid and titanium isopropoxide. The structure of the compound is remarkable, as the carboxylate group is coordinated in a chelating manner and no dimerization of the Ti(OiPr)3 groups through OR bridges was observed.

No MeSH data available.


General structure of the adducts Ti(OR)4(LB) (left) and the mono-substituted derivatives Ti(OR)3(CL) (right, X∩Y = chelating ligand)
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Fig1: General structure of the adducts Ti(OR)4(LB) (left) and the mono-substituted derivatives Ti(OR)3(CL) (right, X∩Y = chelating ligand)

Mentions: The chemistry of titanium alkoxide derivatives with organic co-ligands [1, 2] is of topical interest because of the importance of such compounds in sol–gel and CVD processes. Two main types of derivatives are known: (1) adducts of neutral Lewis bases (LB) of the general composition Ti(OR)4(LB), and (2) derivatives Ti(OR)4−x(CL)x where one or more OR groups of Ti(OR)4 were substituted by an anionic chelating ligand (CL) and which are prepared by reaction of Ti(OR)4 with CL–H. The structures of mono-substituted derivatives Ti(OR)3(CL) with β-diketonates [3], aminoalcoholates [4, 5], β-aminocarboxylates [6], oximates [7, 8], and others as ligands are related to that of the adducts Ti(OR)4(LB) with alcohols [9–11] or amines as bases [12–16]. Both types are OR-bridged dimers with octahedrally coordinated titanium atoms. In the derivatives Ti(OR)3(CL), the neutral ligand and one neighboring OR group of Ti(OR)4(LB) are replaced by the chelating ligand CL (Fig. 1).Fig. 1


A coordination polymer with unusual structural features from imidazolylbutyric acid and titanium isopropoxide.

Czakler M, Puchberger M, Artner C, Schubert U - Monatsh. Chem. (2014)

General structure of the adducts Ti(OR)4(LB) (left) and the mono-substituted derivatives Ti(OR)3(CL) (right, X∩Y = chelating ligand)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4494772&req=5

Fig1: General structure of the adducts Ti(OR)4(LB) (left) and the mono-substituted derivatives Ti(OR)3(CL) (right, X∩Y = chelating ligand)
Mentions: The chemistry of titanium alkoxide derivatives with organic co-ligands [1, 2] is of topical interest because of the importance of such compounds in sol–gel and CVD processes. Two main types of derivatives are known: (1) adducts of neutral Lewis bases (LB) of the general composition Ti(OR)4(LB), and (2) derivatives Ti(OR)4−x(CL)x where one or more OR groups of Ti(OR)4 were substituted by an anionic chelating ligand (CL) and which are prepared by reaction of Ti(OR)4 with CL–H. The structures of mono-substituted derivatives Ti(OR)3(CL) with β-diketonates [3], aminoalcoholates [4, 5], β-aminocarboxylates [6], oximates [7, 8], and others as ligands are related to that of the adducts Ti(OR)4(LB) with alcohols [9–11] or amines as bases [12–16]. Both types are OR-bridged dimers with octahedrally coordinated titanium atoms. In the derivatives Ti(OR)3(CL), the neutral ligand and one neighboring OR group of Ti(OR)4(LB) are replaced by the chelating ligand CL (Fig. 1).Fig. 1

Bottom Line: The coordination polymer [Ti(OiPr)3(OOCCH2CH2CH2C3N2H3)] n was prepared from 4-(imidazol-1-yl)butyric acid and titanium isopropoxide.The structure of the compound is remarkable, as the carboxylate group is coordinated in a chelating manner and no dimerization of the Ti(OiPr)3 groups through OR bridges was observed.

View Article: PubMed Central - PubMed

Affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.

ABSTRACT

Abstract: The coordination polymer [Ti(OiPr)3(OOCCH2CH2CH2C3N2H3)] n was prepared from 4-(imidazol-1-yl)butyric acid and titanium isopropoxide. The structure of the compound is remarkable, as the carboxylate group is coordinated in a chelating manner and no dimerization of the Ti(OiPr)3 groups through OR bridges was observed.

No MeSH data available.