R. Yamuna

Synthesis, characterization and cis–trans influence in cobaloximes with nioxime

Abstract A synthetic scheme leading to the (X)(Y)bis(1,2-cyclohexanedionedioximato)cobalt(III) complexes, where X=Cl, N 3 , ClCH 2 , CH 3 , C 2 H 5 and Y=PPh 3 and Py is reported. The complexes have been characterized by the usual spectroscopic techniques and have been compared with the reported analogous compounds having other dioximes as the equatorial ligands. The first crystal structure of an inorganic cobaloxime with 1,2-cyclohexanedionedioxime (Nioxime) is reported. For a range of X ligands, a clear trend between 31 P, 13 C, 1 H chemical shifts of the equatorial and axial ligands as well as with the Co→chgH charge transfer band has been observed.

Organocobaloximes with mixed-dioxime equatorial ligands: a one-pot synthesis

BenzylCo(dmgH)(dpgH)Py has been synthesized by the reaction of benzyl chloride with a mixture of Co I (dmgH)2Py and Co I (dpgH)2Py, generated in situ, by the NaBH4 reduction of ClCo(dmgH)2Py and ClCo(dpgH)2Py. A mixture of three products is formed. The first crystal structure of an organocobaloxime with a mixed-dioxime ligand is reported.

Synthesis, characterization and photoluminescence properties of tetra(aminophenyl) porphyrin covalently linked to multi-walled carbon nanotubes

Synthesis of a new nano hybrid of 5,10,15,20-mesotetra(4-aminophenyl) porphyrin (TAP) functionalized with multi-walled carbon nanotubes (MWCNTs) through an amide linkage is reported for the first time. This MWCNT-TAP hybrid was characterized by Raman, Fourier transform infrared (FT-IR), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA), absorption and emission spectroscopy. TGA analysis reveals that there is a

Crystal structure of 2-(2,4-di-chloro-phen-yl)-4-hydroxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

\sim

1-(2-Bromo-meth-yl-1-phenyl-sulfonyl-1H-indol-3-yl)propan-1-one.

∼60% weight loss when heated from 150–750

Crystal structure of 2-[2-phenyl-1-(phenyl-sulfon-yl)eth-yl]-1-phenyl-sulfonyl-1H-indole.

^{\circ }\mathrm{C}