title: Spectroscopic studies on some fluorescent mixed-ligand titanium(IV) complexes.
abstract: A novel route to synthesize some titanium(IV) complexes containing acetylacetone, straight chain carboxylic acid and hydroxycarboxylic acid ligands has been investigated. Complexes with the general formula [Ti(acac)Cl(2-n)(OOCR*)(n)(OOCC(15)H(31))] (where Hacac=acetylacetone, R*COOH=hydroxycarboxylic acids and n=1 or 2) have been isolated and characterized. Molecular weight determinations indicated mononuclear nature of the complexes. LMCT bands were observed in the electronic spectra. Infrared spectra suggested bidentate nature of the ligands. Fluorescent behaviour of the complexes was noticed on the basis of fluorescence spectra. Powder XRD indicated them to be semi-crystalline having the crystallite size in 136-185 nm range. Transmission electron microscopy (TEM) indicated spherical particles of ~ 200 nm diameter. On the basis of physico-chemical studies, it is suggested that titanium is having coordination number 7 or 8 in these complexes.
authors: Coordination Chemistry Research Laboratory, Department of Chemistry, DDU Gorakhpur University, Gorakhpur 273009, India. drbpbaranwal@gmail.com
authors: Balram Prasad
authors: BP
authors: Baranwal
authors: Alok Kumar
authors: AK
authors: Singh
authors: Anand
authors: A
authors: Varma
mesh_terms: D004583:Electrons; D006868:Hydrolysis; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D046529:Microscopy, Electron, Transmission; D011208:Powders; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013055:Spectrophotometry, Infrared; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D008024:Ligands; D011208:Powders; D014025:Titanium