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 - http://www.scopus.com/inward/record.url?scp=56349157481&partnerID=8YFLogxK
U2 - 10.1016/j.jorganchem.2008.09.056
DO - 10.1016/j.jorganchem.2008.09.056
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AN - SCOPUS:56349157481
SN - 0022-328X
VL - 693
SP - 3947
EP - 3950
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 26
ER -