CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
Synthesis, Crystal structure, Spectroscopic, Thermogravimetric and Theoretical Characterization of Ni(II) and Zn(II) complexes with 4-chloro-2- nitrobenzenesulfonamide.
G. ESTIU; M.E.CHACÓN VILLALBA; G.CAMÍ; G.ECHEVERRÍA; D. B. SORIA
JOURNAL OF MOLECULAR STRUCTURE
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2014 p. 82 - 82
Two new complexes of Ni and Zn with 4-Chloro-2-nitrobenzenesulfonamide (ClNbsa) havebeen synthesized and characterized. The structure of the [Ni(ClNbsa)2(NH3)4] complex wasdetermined by X-ray diffraction methods. It crystallizes in the monoclinic P21/c space groupwith a=12.8679(3) Å, b=7.7254(1) Å, c= 12.2478(2) Å, = 109.899(2)°, V=1144.85 (4)Å3and Z=4 molecules per unit cell. The coordination geometry of the Nickel (II) ion in thecomplex can be described as a distorted octahedron with two N-sulfonamide and four NH3groups in opposite vertices. Due to the poor solubility of the Zn(II) complex, their cellparameters were determined by indexing the powder X-ray pattern using the successivedichotomy method implemented in the Fullprof Suite software package. A triclinic cell wasdetermined with cell parameters a=18.3724(1) Å, b= 7.9468(8) Å, c=10.2212(9) Å a=63.061(6) b=108.754(6) g=109.153(6) and V=1229.97(2)Å3. Nuclear magnetic resonance(NMR) spectroscopy of 1H and 13C have been used for support the structure of the Zncomplex. Vibrational and electronic spectroscopy have been used to characterize thecompounds, using theoretical calculations for the assignment of the experimental bands. Thethermal behavior was investigated by thermogravimetric analyses (TG) and differentialthermal analysis (DT).