Titanium(IV) complexes of oximes - Novel binding modes

M G Davidson; A L Johnson; M D Jones; M D Lunn; M F Mahon

doi:10.1016/j.poly.2006.09.055

Titanium(IV) complexes of oximes - Novel binding modes

M G Davidson, A L Johnson, M D Jones, M D Lunn, M F Mahon

Department of Chemistry

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27 Citations (SciVal)

Abstract

In this paper we investigate the coordination of various oximes (C=N-OH) with titanium(IV). We have chosen three ligands (1H(2)-3H(2)) with a phenolic moiety and one ligand 4H with a pyridine group. It was shown that ligands 1H(2) to 3H(2) react with Ti((OPr)-Pr-i)(4) to form complexes with a generic formula Ti-3(L)(2)((OPr)-Pr-i)(8), where each oxime bridges between the three titanium centres. Interestingly, these complexes are clusters made up of three titanium atoms, with one titanium centre sitting above the other two. This titanium centre can be thought of as a trapped Ti((OPr)-Pr-i)(4) molecule, H-1 and C-13 NMR spectroscopy indicates that the solid-state structures are maintained in solution. Subtle differences between the three X-ray structures are discussed. Ligand 4H readily reacts with Ti((OPr)-Pr-i)(4) forming a dimeric species, Ti-2(4)(4)((OPr)-Pr-i)(4), where the titanium centres are linked by bridging isopropoxide moieties. (c) 2006 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	975-980
Number of pages	6
Journal	Polyhedron
Volume	26
Issue number	5
DOIs	https://doi.org/10.1016/j.poly.2006.09.055
Publication status	Published - 2007

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ID number: ISI:000245489800004

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title = "Titanium(IV) complexes of oximes - Novel binding modes",

abstract = "In this paper we investigate the coordination of various oximes (C=N-OH) with titanium(IV). We have chosen three ligands (1H(2)-3H(2)) with a phenolic moiety and one ligand 4H with a pyridine group. It was shown that ligands 1H(2) to 3H(2) react with Ti((OPr)-Pr-i)(4) to form complexes with a generic formula Ti-3(L)(2)((OPr)-Pr-i)(8), where each oxime bridges between the three titanium centres. Interestingly, these complexes are clusters made up of three titanium atoms, with one titanium centre sitting above the other two. This titanium centre can be thought of as a trapped Ti((OPr)-Pr-i)(4) molecule, H-1 and C-13 NMR spectroscopy indicates that the solid-state structures are maintained in solution. Subtle differences between the three X-ray structures are discussed. Ligand 4H readily reacts with Ti((OPr)-Pr-i)(4) forming a dimeric species, Ti-2(4)(4)((OPr)-Pr-i)(4), where the titanium centres are linked by bridging isopropoxide moieties. (c) 2006 Elsevier Ltd. All rights reserved.",

author = "Davidson, {M G} and Johnson, {A L} and Jones, {M D} and Lunn, {M D} and Mahon, {M F}",

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year = "2007",

doi = "10.1016/j.poly.2006.09.055",

language = "English",

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TY - JOUR

T1 - Titanium(IV) complexes of oximes - Novel binding modes

AU - Davidson, M G

AU - Johnson, A L

AU - Jones, M D

AU - Lunn, M D

AU - Mahon, M F

N1 - ID number: ISI:000245489800004

PY - 2007

Y1 - 2007

N2 - In this paper we investigate the coordination of various oximes (C=N-OH) with titanium(IV). We have chosen three ligands (1H(2)-3H(2)) with a phenolic moiety and one ligand 4H with a pyridine group. It was shown that ligands 1H(2) to 3H(2) react with Ti((OPr)-Pr-i)(4) to form complexes with a generic formula Ti-3(L)(2)((OPr)-Pr-i)(8), where each oxime bridges between the three titanium centres. Interestingly, these complexes are clusters made up of three titanium atoms, with one titanium centre sitting above the other two. This titanium centre can be thought of as a trapped Ti((OPr)-Pr-i)(4) molecule, H-1 and C-13 NMR spectroscopy indicates that the solid-state structures are maintained in solution. Subtle differences between the three X-ray structures are discussed. Ligand 4H readily reacts with Ti((OPr)-Pr-i)(4) forming a dimeric species, Ti-2(4)(4)((OPr)-Pr-i)(4), where the titanium centres are linked by bridging isopropoxide moieties. (c) 2006 Elsevier Ltd. All rights reserved.

AB - In this paper we investigate the coordination of various oximes (C=N-OH) with titanium(IV). We have chosen three ligands (1H(2)-3H(2)) with a phenolic moiety and one ligand 4H with a pyridine group. It was shown that ligands 1H(2) to 3H(2) react with Ti((OPr)-Pr-i)(4) to form complexes with a generic formula Ti-3(L)(2)((OPr)-Pr-i)(8), where each oxime bridges between the three titanium centres. Interestingly, these complexes are clusters made up of three titanium atoms, with one titanium centre sitting above the other two. This titanium centre can be thought of as a trapped Ti((OPr)-Pr-i)(4) molecule, H-1 and C-13 NMR spectroscopy indicates that the solid-state structures are maintained in solution. Subtle differences between the three X-ray structures are discussed. Ligand 4H readily reacts with Ti((OPr)-Pr-i)(4) forming a dimeric species, Ti-2(4)(4)((OPr)-Pr-i)(4), where the titanium centres are linked by bridging isopropoxide moieties. (c) 2006 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.poly.2006.09.055

DO - 10.1016/j.poly.2006.09.055

M3 - Article

SN - 0277-5387

VL - 26

SP - 975

EP - 980

JO - Polyhedron

JF - Polyhedron

IS - 5

ER -

Titanium(IV) complexes of oximes - Novel binding modes

Abstract

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