Crystal structure and infrared spectroscopy of MCl2·2CONH3 (M = Cu, Mn)
- 37 Downloads
Crystals of MCl2·2CONH3 (M = Cu2+, Mn2+) are synthesized from low-temperature water-formamide solutions and studied by crystal optical, single crystal X-ray diffraction, and infrared spectroscopy methods. The crystal structures of CuCl2·2CONH3 and MnCl2·2CONH3 are solved by direct methods and refined in the P1triclinic space group, R1= 0.043 and 0.038 for 501 and 686 reflections with F 0ÃΣ(F0) respectively. Unit cell parameters for Cu and Mn salts are: a = 3.705(1) Å and 3.685(1) Å, b = 7.049(2) Å and 7.136(2) Å, c = 7.375(2) Å and 7.779(2) Å, 6h =113.57(3)² and 117.17(2)², β = 96.17(3)² and 95.35(2)², γ = 94.85(3)² and 92.23(2)² respectively, Z= 1. In the studied crystal structures, MCl4O2 octahedra share Cl-Cl edges and form chains along the  direction. This direction corresponds to a morphological elongation of the obtained crystals and orientation of the maximum refractive index. The FT infrared spectra obtained in a range from 4000 cm−1 to 300 cm−1 are very close to the spectrum of liquid formamide, but exhibit better resolution of absorption bands.
Keywordssyntaxy formamide single crystal X-ray diffraction analysis infrared spectroscopy Cu and Mn complexes
Unable to display preview. Download preview PDF.
- 2.V. D. Franke, Yu. O. Punin, and N. V. Platonova, Vestnik SPbGU, Ser. 7, No. 2, 16 (2003).Google Scholar
- 4.I. A. Zamilatskov, Coordination Compounds of Zinc and Cadmium Iodides with Amides [in Russian], Diss. … Cand. Chem. Sci., MGATKhT, Moscow (2007).Google Scholar
- 5.G. M. Sheldrick, SHELX97, Univ. Göttingen, Germany (1998).Google Scholar
- 6.J. E. Callanan and N. O. Smith, Advances in X-Ray Analysis, 9, 159 (1966).Google Scholar
- 7.E. V. Savinkina, I. A. Zamilatskov, N. E. Kuz’mina, and K. K. Palkina, 11th Intern. Symp. Inorganic Ring Systems, Program and Abstracts, Oulu (2006), p. 146.Google Scholar
- 10.L. J. Bellamy, The Infrared Spectra of Complex Molecules, Wiley, New York (1962).Google Scholar
- 11.V.L. Furer and T. A. Panteleeva, Izv. KGASU, No. 1 (3), 149 (2005).Google Scholar
- 12.M. Zamama and M. Knidiri, Spectrochim. Acta, A56, 1139 (2000).Google Scholar
- 13.K. Nakanishi, Infrared Adsorption Spectroscopy, Holden-day, San-Francisco (1962).Google Scholar
- 14.NIST Chemistry webbook. http://webbook.nist.gov/cgi/cbook.cgi?Range=&Scale=on&Zoom=C75127&Index=1&Type=IR.
- 15.K. Nakamoto, in: Infrared and Raman Spectra of Inorganic and Coordination Compounds, 4th ed., Wiley, New York (1986).Google Scholar