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Journal of Structural Chemistry

2015 year, number 5

PHYSICOCHEMICAL STUDY OF AMMONIUM DICOBALT(II)-OCTA-MOLYBDENUM WITH THE COMPOSITION (NH4)2[Co(H2O)4]2[Mo8O27]·6H2O

G. Z. Kaziev1, H. Q. Saul2, A. F. Stepanova1, V. N. Khrustalev3,4, A. de Ita2, N. A. Panurin1
1Moscow State Pedagogical University, Moscow, Russia
2Universidad Autonoma Metropolitana, Azcapotzalco, Mexico
3Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
4Peoples’ Friendship University of Russia, Moscow, Russia
Keywords: синтез, гетерополисоединения, октамолибденодикобальтат(II), РСА, ИК спектроскопия, ТГА, synthesis, heteropolycompounds, octamolybdenum cobaltate(II), single crystal XRD, IR spectroscopy, TGA

Abstract

Ammonium dicobalt(II)-octa-molybdenum with the composition (NH 4) 2[Co(H 2O) 4] 2[Mo 8O 27]×6H 2O (I) is synthesized and studied by X-ray diffraction, IR spectroscopy, and thermogravimetry. The compound crystallizes in a triclinic system with the following unit cell parameters: a = 8.62923(9) Å, b = 9.4795(10) Å, c = 12.2071(13) Å, a = 104.326(2)°, b = 109.910(2)°, g = 100.820(2)°, V = 868.18(16) Å 3, ρ (calc.) = 3.071 g/cm 3, Z = 1. Space group is Р -1. IR spectroscopic and thermogravimetric analyses are performed.