2-hydroxy-5-chloro-3-nitroacetophenone isonicotinoyl hydrazone as a Schiff base ligand and its complexes with Cr(III), Mn(III), Fe(III), VO(IV), Zr(IV) and UO2(VI) metal ions have been synthesized. The ligands as well as their metal complexes were well characterized using various physicochemical techniques such as elemental analyses, molar conductance measurements, magnetic measurements, therma...

In the present study, Cu(II) and Co(II) complexes have been prepared by reacting metal Nitrate with the ligand (Alprazolam), which have the general structural composition [(L) M(NO3)2], where M=Cu(II) and Co(II) and L=Alprazolam [8-chloro-1-methyl-6-phenyl-4H-1,2,4-trizolo (4,3-a) (1,4) benzodiazepine].The complexes were characterised on the basis of elemental analysis, molecular weight and IR ...

Four Ni–phen complexes were prepared and characterized by FTIR thermal analysis. The X-ray structure determination shows that the geometry around NiII ions in 1, [Ni(phen)2(H2O)(ONO2)](NO3); 2, [Ni(phen)2(H2O)Cl]Cl; 3, [Ni(phen)(CH3CN)(ONO2)(O2NO)] 4, [Ni(phen)3](NO3)2.H2O.C2H5OH is considerably distorted octahedral. coordination core geometries 3 4 are NiN4O2, NiN4OCl, NiN3O3 NiN6, respectivel...

A new ligand [4-chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylcarb amothioyl) benzamide] (CAP) was synthesized by reaction of P-ChloroBenzoyl isothio cyanate with 4-aminoantipyrine,The characterized micro elemental analysis C.H.N.S.,FT-IR,UV-Vis and1H-13CNMR spectra, some transition metals complex this were prepared and FT-IR, UV-Vis conductivity measurements, magnetic suscep...

The preparation, photophysics, and solid-state structures of three osmium cored complexes are reported. The osmium complexes take the general form of [OsCl(N–N)(L–L)(CO)]þ hexafluorophosphate where N stands for a derivative of 1,10-phenanthroline and L stands for a phosphine type ligand. The emission of the complexes is shown to be blue shifted to the osmium emission of Os(bpy) 2þ 3 . The emiss...

Synthesis of the first oxaphosphirane chromium(0) and molybdenum(0) complexes of the type [{(R(1)PCH(R(2))-O}M(CO)(5)] (R(1) = C(5)Me(5)) (8a-e, 15a-e) and (R(1) = CH(SiMe(3))(2)) (9a-e, 16a-e) via reaction of dichloro(organo)- (1, 2, 10, 11) and chloro(organo)phosphane complexes (3,4,12) with lithium bases and aldehydes 7a-e is reported. Furthermore, bicyclic 1,3-oxaphospholane complexes 17 an...

The first asymmetric ring-expansion carbonylation of meso-epoxides to β-lactones is reported. Two structurally diverse chiral Cr(III) chloro complexes in conjunction with Co(2)(CO)(8) were shown to be competent catalytic systems for this transformation, displaying significant levels of asymmetric induction of up to 56% ee.

A method is reported for making a potentially very wide series of ruthenium hydrido chloro complexes with diamine and readily-prepared diphosphinite ligand modules as precatalysts for the asymmetric transfer hydrogenation of simple ketones to give chiral alcohols in good yield and enantioselectivity.

The reaction of RuCl(3)(solv.)(n) with tert-butylacetylene in methanol or ethanol leads to the formation of chloro-bridged half-sandwich complexes with sterically demanding cyclopentadienyl ligands, which are of high interest as starting materials for the synthesis of novel Ru catalysts.