Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features

Cesar M. Manna; Michal Shavit; Edit Y. Tshuva

doi:10.1016/j.jorganchem.2008.09.056

Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features

Cesar M. Manna
, Michal Shavit
, Edit Y. Tshuva^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Short survey › peer-review

20 Scopus citations

Abstract

A small difference in diamine bis(phenolato) ligands, namely an additional single methylene unit, directs formation of dinuclear Ti(IV) complexes rather than mononuclear ones as characterized by X-ray crystallography. Varying steric bulk of the ligand affects the coordination number in the dinuclear complexes and the ligand to metal ratio. A ligand with reduced steric bulk leads to a L₂Ti₂(OiPr)₄ type complex featuring two octahedral metal centers bridged only by the two phenolato ligands, whereas a bulky ligand leads to a Ti₂(μ-L¹)(μ-OiPr)₂(OiPr)₄ type complex with a single chelating ligand, two bridging isopropoxo ligands, and two terminal isopropoxo groups on each of the two metal centers, which are of trigonal bi-pyramidal geometry.

Original language	English
Pages (from-to)	3947-3950
Number of pages	4
Journal	Journal of Organometallic Chemistry
Volume	693
Issue number	26
DOIs	https://doi.org/10.1016/j.jorganchem.2008.09.056
State	Published - 15 Dec 2008

Keywords

Coordination modes
Dinuclear compounds
O ligands
Titanium(IV)

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10.1016/j.jorganchem.2008.09.056

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@article{9a9caa97362e4b35a20ea41115605748,

title = "Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features",

abstract = "A small difference in diamine bis(phenolato) ligands, namely an additional single methylene unit, directs formation of dinuclear Ti(IV) complexes rather than mononuclear ones as characterized by X-ray crystallography. Varying steric bulk of the ligand affects the coordination number in the dinuclear complexes and the ligand to metal ratio. A ligand with reduced steric bulk leads to a L2Ti2(OiPr)4 type complex featuring two octahedral metal centers bridged only by the two phenolato ligands, whereas a bulky ligand leads to a Ti2(μ-L1)(μ-OiPr)2(OiPr)4 type complex with a single chelating ligand, two bridging isopropoxo ligands, and two terminal isopropoxo groups on each of the two metal centers, which are of trigonal bi-pyramidal geometry.",

keywords = "Coordination modes, Dinuclear compounds, O ligands, Titanium(IV)",

author = "Manna, \{Cesar M.\} and Michal Shavit and Tshuva, \{Edit Y.\}",

year = "2008",

month = dec,

day = "15",

doi = "10.1016/j.jorganchem.2008.09.056",

language = "אנגלית",

volume = "693",

pages = "3947--3950",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "26",

}

Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features. / Manna, Cesar M.; Shavit, Michal; Tshuva, Edit Y.
In: Journal of Organometallic Chemistry, Vol. 693, No. 26, 15.12.2008, p. 3947-3950.

Research output: Contribution to journal › Short survey › peer-review

TY - JOUR

T1 - Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features

AU - Manna, Cesar M.

AU - Shavit, Michal

AU - Tshuva, Edit Y.

PY - 2008/12/15

Y1 - 2008/12/15

N2 - A small difference in diamine bis(phenolato) ligands, namely an additional single methylene unit, directs formation of dinuclear Ti(IV) complexes rather than mononuclear ones as characterized by X-ray crystallography. Varying steric bulk of the ligand affects the coordination number in the dinuclear complexes and the ligand to metal ratio. A ligand with reduced steric bulk leads to a L2Ti2(OiPr)4 type complex featuring two octahedral metal centers bridged only by the two phenolato ligands, whereas a bulky ligand leads to a Ti2(μ-L1)(μ-OiPr)2(OiPr)4 type complex with a single chelating ligand, two bridging isopropoxo ligands, and two terminal isopropoxo groups on each of the two metal centers, which are of trigonal bi-pyramidal geometry.

AB - A small difference in diamine bis(phenolato) ligands, namely an additional single methylene unit, directs formation of dinuclear Ti(IV) complexes rather than mononuclear ones as characterized by X-ray crystallography. Varying steric bulk of the ligand affects the coordination number in the dinuclear complexes and the ligand to metal ratio. A ligand with reduced steric bulk leads to a L2Ti2(OiPr)4 type complex featuring two octahedral metal centers bridged only by the two phenolato ligands, whereas a bulky ligand leads to a Ti2(μ-L1)(μ-OiPr)2(OiPr)4 type complex with a single chelating ligand, two bridging isopropoxo ligands, and two terminal isopropoxo groups on each of the two metal centers, which are of trigonal bi-pyramidal geometry.

KW - Coordination modes

KW - Dinuclear compounds

KW - O ligands

KW - Titanium(IV)

UR - https://www.scopus.com/pages/publications/56349157481

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DO - 10.1016/j.jorganchem.2008.09.056

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SN - 0022-328X

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JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 26

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Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features

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Keywords

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