699-36-5Relevant academic research and scientific papers
Synthesis, spectral and sol-gel behavior of mixed ligand complexes of titanium(iv) with oxygen, nitrogen and sulfur donor ligands
Srivastava, Abhishek,Srivastava, Neetu,Tripathi, Umesh Nath
, p. 61 - 76 (2021/06/03)
A new route to synthesize nano-sized Ti(IV) mixed ligand complexes have been investigated by the reaction of titanium(IV) chloride with ammonium salts of dithiophosphate and 3(2'-hydroxyphenyl)-5-(4- substituted phenyl) pyrazolines. The resultant complex is then treated with H2S gas to get sulfur bridged dimer of Ti(IV) complex, a precursor of TiS2. The morphology of the complexes was studied by employing XRD which shows that all the complexes are amorphous solid. Molecular weight measurements, elemental analysis in conjugation with spectroscopic (IR, 1H NMR, 13C NMR and 31P NMR) studies revealed the dimeric nature of the complexes in which pyrazoline and dithiophosphate are bidentate. Scanning electron microscopic image and XRD indicate that the particles are in the nano range (50 nm). Putting all the facts together, coordination number six is proposed for titanium with octahedral geometry.
Synthesis, spectral characterization and antibacterial activity of O, O’-dialkyl and alkylene dithiophosphatogold (III)dichloride; crystal structure of [S2POCMe2CMe2O]AuCl2
Elkhaldy, Adnan A. S.,Gaikwad, Dnyaneshwar,Staples, Richard J.,Janen, Afef,Boni, Yannic
, p. 871 - 876 (2019/02/05)
O, O’-Dialkyl and alkylene dithiophosphatogold (III)dichloride complexes of the type [(RO)2PS2]AuCl2 and [S2POGO]AuCl2, where R = Et, nPr, iPr, iBu, Ph, cyclohexyl and cyclopentyl, where G = CMe2CMe2-, have been synthesized in 80-90% yields by reaction of the corresponding acid or sodium salts of the appropriate dithiophosphoric acids in 1:1 ratio with gold (III) chloride in dry dichloromethane at room temperature. The compounds have been characterized by elemental analyses, IR and (1H, l3C, and 31P) NMR. The crystal structure of [S2POCMe2CMe2O]AuCl2, was determined. These new complexes have shown their growth inhibiting potential against various bacterial strains with moderate to good activity.
Synthesis of S-thioacyl dithiophosphates, efficient and chemoselective thioacylating agents
Doszczak, Leszek,Rachon, Janusz
, p. 1271 - 1279 (2007/10/03)
Easily available acyl dithiophosphates are not stable and isomerise reversibly to O-thioacyl monothiophosphates, especially when subjected to heating. Much slower but probably irreversible isomerisation to S-thioacyl monothiophosphates occurs. Since equilibrium states are established and S-thioacyl (mono)thiophosphates form slowly, reaction mixtures contain generally both thioacylating and acylating agents, and consequently cannot be used for efficient thioacylation. On the other hand, treatment of a mixture of isomeric anhydrides with an excess of a dithiophosphoric acid leads to exclusive formation of S-thioacyl dithiophosphates. They appear to be excellent thioacylating agents: relatively stable, inert towards water and oxygen and therefore easy to handle. Reactions with nitrogen or sulfur nucleophiles proceed very rapidly under ambient conditions, yielding respective thioacyl derivatives. Isolation of the products is very simple. Due to the low reactivity of S-thioacyl dithiophosphates towards oxygen nucleophiles they can be used for direct thioacylation of multifunctional nucleophiles with unprotected hydroxy groups. Respective thioacyl derivatives cannot readily be obtained using other methods.
SYNTHESIS AND CHARACTERIZATION OF 2-MERCAPTO-2-THIONO-1,3,2-DIOXAPHOSPHOLANES AND DIOXAPHOSPHORINANES
Chauhan, H. P. S.,Bhasin, C. P.,Srivastava, G.,Mehrotra, R. C.
, p. 99 - 104 (2007/10/02)
2-Mercapto-2-thiono-1,3,2-dioxaphospholanes and dioxaphosphorinanes, have been synthesized by the reactions of phosphorus pentasulfide with some 1,2-diols (viz., butane-2,3-diol and 2,3-dimethylbutane-2,3-diol) and 1,3-diols (viz., 2-methylpentane-2,4-diol, 2,2-dimethylpropane-1.3-diol and 2,2-diethylpropane-1,3-diol) in 1:2 molar ratio in dry benzene.These volatile compounds have been purified by distillation under reduced pressure.The 2-methylpentane-2,4-diol derivative, however, decomposed during attempted distillations.These new compounds have been characterized by elemental analysis, molecular weight determinations, measurement of pKa values and IR as well as NMR spectroscopic studies.The ammonium and sodium salts of some of these acids have also been characterized.
