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Structural Investigation of Pyridinecarboxylato Titanium(IV) Complexes: An Uncommon Monomeric Octacoordinated Complex vs. a Hexaprismatic Architecture
Author(s) -
Fenton Julie L.,
Laaroussi Anasse,
Mobian Pierre,
Chaumont Clément,
Khalil Georges,
Huguenard Clarisse,
Henry Marc
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201301275
Subject(s) - chemistry , titanium , dodecahedron , pyridine , monomer , crystallography , polymer chemistry , stereochemistry , medicinal chemistry , organic chemistry , polymer
We report the synthesis and structural characterisation of two titanium(IV) complexes. A new titanium(IV) complex bearing four picolinato ligands, denoted as Ti(pic) 4 , has been prepared under solvothermal conditions. This complex identified by single‐crystal diffraction is a new example of an octacoordinated environment for titanium(IV) and is close to an ideal triangular dodecahedron. A second synthesis of a hexaprismatric carboxylato titanium complex formulated as [Ti 6 (μ 3 ‐O) 6 (O i Pr) 6 (μ‐O 2 CC 5 H 3 NCOO i Pr) 6 ] starting from a dissymmetric anhydride pyridine carboxylic precursor is described. The solid‐state analysis shows the presence of a single compound among 13 possible species. Calculations gave evidence of a highly selective mechanism leading to the formation of the final product.