Synthesis, Characterisation, and X-Ray Crystal Structures of 8-Hydroxyquinoline Complexes of Group IV Metal Alkoxides
Mahsa Armaghan A , Mahdi Mirzaee B C , Mahmood Norouzi B , Mostafa M. Amini A and Hamid Reza Khavasi A
+ Author Affiliations
- Author Affiliations
A Department of Chemistry, Shahid Beheshti University, General Campus, Tehran 1983963113, Iran.
B Department of Chemistry, Shahrood University of Technology, Shahrood 3619995161, Iran.
C Corresponding author. Email: mmirzaee@shahroodut.ac.ir
Australian Journal of Chemistry 66(12) 1587-1593 https://doi.org/10.1071/CH13420
Submitted: 20 August 2013 Accepted: 3 September 2013 Published: 11 October 2013
Abstract
Stoichiometric reaction of 8-hydroxyquinoline with titanium tetraethoxide, and zirconium and hafnium tetra-2-propoxide in toluene at room temperature resulted in formation of [M2-μ-(OR)2-(C9H6NO)2(OR)2] (1: M = Ti, R = Et; 2: M = Zr, R = iPr; 3: M = Hf, R = iPr). All complexes were characterised by infrared, ultraviolet-visible, and NMR spectroscopy, and mass spectrometry. The molecular structures of 1, 2, and 3 were determined by single-crystal X-ray diffraction. The coordination geometries around the metal ions are distorted octahedral, which share an edge through bridged alkoxy groups. Each anionic 8-quinolinolate ligand is also chelated to one metal ion through its pyridine nitrogen and phenolate oxygen atoms.
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