11 research outputs found
Structural Investigation of Di-μ-chloro-bis[saccharinatopyridinemercury(II)] by X-ray Diffraction and FT IR Spectroscopy
The solid state structure of C12H9ClHgN2O3S2 was determined and the appropriate assignment of the CO and SO2 stretching vibrations in the FT IR spectrum was made. Two monomeric chlorosaccharinatopyridinemercury(II) moieties are joined together forming a di-chloro bridged dimmer by an inversion centre operation. The mercury atom is coordinated with two bridging chlorine and the pyridine and saccharinato nitrogen atoms in the shape of a heavily distorted tetrahedron. There is a significant difference between Hg1âCl1 2.533(2) Ă
and Hg1âCl1i 2.715(2) Ă
distances as well as between Hg1âN11 2.106(7) Ă
and Hg1âN21 2.209(7) Ă
bond lengths. The valence bond angles at the metal atom deviate significantly from the standard tetrahedral value, ranging from 86.23(7)° for Cl1âHg1âCl1i to 131.5(3)° for N11âHg1âN21. Discrete molecules are linked together by weak intermolecular CâHâ
â
â
O attractions at distances less than 3.5 Ă
Electrochemistry of saccharinate anion at liquid interfaces
International audienceElectrochemistry of saccharinate anion (saccâ) is studied at the liquid water|nitrobenzene (w|nb) interface by means of three-phase electrodes. Saccharinate anion can be effectively transferred across w|nb interface driven by the redox transformation of the lutetium bis(tetra-tert-butylphthalocyaninato), with a standard Gibbs energy of transfer from water to nitrobenzene of 20.17 kJ molâ1. The kinetics of transfer is estimated applying the quasireversible maximum. In addition, the influence of saccâ on the thermodynamics and kinetics of the alkali metal cations transfer is discussed