Abstract
A new complexes of Cp2Ti[S2P(OR)2]2 (where R = Et, Pr-n, Pr-i, Bu-i and Ph) and Cp2Ti[S2POGO]2 (where G = -CH2CMe2CH2-, -CH2CEt2CH2- and -CMe2CMe2-) were prepared by the dropwise addition of the appropriate O,O’-dialkyl or -alkylenedithiophosphoric acid to biscyclopentadienyl titanium dichloride in 1:2 molar ratio and refluxed in benzene solution. These novel deep red colored complexes were characterized by elemental analyses, molecular weight measurements and spectroscopic techniques (IR., NMR 1H, 13C and 31P NMR). These titanium (IV) dithio complexes have also been screened for their antibacterial activities.
Highlights
The synthesis of coordination compounds with sulfur containing ligands has been in the center of interest in chemical research for many years [1]-[6]
In view of the ready conversion of Ti-Cl bonded into Ti-S bonded compounds, the preparative route chosen for the above compounds was the direct interaction between Biscyclopentadienyl Titanium (IV) dichloride and dialkyl diothiophosphoric acids
The preliminary results show that the chemical compounds slightly inhibited the growth of Escherich coli and Bacillus cereus after a 24 h incubation period, but had little or no effect on Pseudomonas aeruginosa under similar conditions
Summary
The synthesis of coordination compounds with sulfur containing ligands has been in the center of interest in chemical research for many years [1]-[6]. (2014) Synthesis, Spectral and Antimicrobial Studies of Bis (Cyclopentadienyl) Titanium (IV) Bis (O,O’-Dialkyl and Alkylenedithiophosphate) Complexes. Derivatives containing other monodentate ligands in addition to dithiophosphate have not been isolated. Titanocene does not adopt the typical “sandwich” structure like ferrocene due to the 4 ligands around the metal center, but rather takes on a distorted tetrahedral shape [19]. The titanocene structure which is monomeric species containing unidentate dithiophosphates and 4-coordinated titanium atoms
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