Ramarathnam Krishna Kumar

Department of Engineering Design

Gopalaswamiengar Aravamudan

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Tetraethylammonium (N,N‐diethyldithiocarbamato‐S,S')tetraiodotellurate(IV)

Acta Crystallographica Section C: Crystal Structure Communications

The title compound TeIVLI3 [L = diethyldithiocarbamate, (C2H5)2NCS-2], is the first example of a mixed halide-dithiocarbamate complex of TeIV with halide to a dithiocarbamate ratio of 3 : 1. Two different methods have been employed for the preparation of this compound. The first method involves the ligand exchange reaction between TeL2 and Tel4. The second method is the oxidative addition of iodine on TeIILI. The structure of the title compound has been determined and it is found to be polymeric with iodine being the bridging ligand. The polymer is made up of interlinking of edge-sharing pentagonal bipyramidal dimers, which are stacked along a axis of the triclinic unit cell. The three Te-I distances are Te-I(1) 2.982(1), Te-I(2) 2.901(1) and Te-I(3) 2.872(1) Å, and together with two Te-S and two intermolecular Te-I interactions complete the seven coordination with a distorted pentagonal bipyramidal geometry around each tellurium.

Polyhedron

A novel mixed ligand Te(IV) complex comprising three halides and a dithiocarbamate; synthesis and crystal structure of triiododiethyldithiocarbamatotellurium(IV), Te{(C2H5)2NCS2}I3

The title compound TeIILI [L = diethyl dithiocarbamate, (C2H5)2NCS-2] was synthesized by the reduction of TeIVL2I2 with elemental tellurium. Its structure has been determined and is found to be polymeric, with I being the bridging ligand. The polymeric chain adopts a helical configuration which runs parallel to the c-axis of the tetragonal unit cell. Each tellurium is bonded to two sulphurs of a chelating dithiocarbamate group and to two iodines in a planar configuration. The bond distances of TeS(1), TeS(2), TeI and TeI′ are 2.536(4), 2.483(5), 3.108(1) and 3.279(1) Å, respectively, and the bond angles of ITeS(1), S(1)TeS(2), S(2)TeI′ and I′TeI are 149.6(2), 70.7(2), 151.1(2) and 129.2(2)°, respectively. © 1993.

Synthesis and crystal structure determination of the novel compound iododiethyldithiocarbamatotellurium(II)

ChemInform

ChemInform Abstract: 3,6-Disubstituted 1,2,4-Triazolo(3,4-b)(1,3,4)thiadiazoles. Part 2. Synthesis, Antimicrobial and Antiviral Activity.

ChemInform Abstract: Synthesis and Antimicrobial Testing of Novel Oxadiazolylbenzimidazole Derivatives.

Journal of Applied Crystallography

PARST95 – an update to PARST: a system of Fortran routines for calculating molecular structure parameters from the results of crystal structure analyses

Tetraethylammonium (N,N-diethyldithio-carbamato-S,S′)tetraiodotellurate(IV)

Journal	Acta Crystallographica Section C: Crystal Structure Communications
Publisher	Blackwell Munksgaard
ISSN	01082701
Open Access	No