PHYSICOCHEMICAL STUDY OF AMMONIUM DICOBALT(II)-OCTA-MOLYBDENUM WITH THE COMPOSITION (NH <sub>4</sub>) <sub>2</sub>[Co(H <sub>2</sub>O) <sub>4</sub>] <sub>2</sub>[Mo <sub>8</sub>O <sub>27</sub>]·6H <sub>2</sub>O
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.