Ammoniumbis(hydroxylammonium) pentafluoridooxidovanadate(IV)Dojer, Brina (Avtor) Kristl, Matjaž (Avtor) Jagličić, Zvonko (Avtor) Drofenik, Mihael (Avtor) Meden, Anton (Avtor) hydroxylammonium fluorovanadatesx-ray powder diffractionx-ray structure determinationthermal analysisTurquoise crystals of a new hydroxylammonium compound with the formula $NH_4(NH_3OH)_2[VOF_5]$ have been synthesized by the reaction of solid $NH_3OHF$ and the aqueous solution of vanadium in HF. The compound crystallizes monoclinic, $P2_1/n$, with cell parameters: a = 10.5658(2) Å, b = 6.6143(1) Å, c = 11.6618(2) Å, β = 96.282(1). Magnetic susceptibility was measured using a SQUID device over a temperature range 2–300 K at magnetic field $10^3 Oe$ giving the result $µ_{eff}$ = 1.65 BM. The thermal decomposition was studied by TG and DSC analysis. $NH_4(NH_3OH)_2[OF_5V]$ decomposes above 354 K in three steps, obtaining $NH_4VOF_3$ after the first step and $V_2O_5$ as the final residue.20082017-08-17 10:55:17Znanstveno delo67417ISSN: 1318-0207UDK: 546.881.022.057:543.442.3:543.57OceCobissID: 14086149COBISS_ID: 30084101ISSN pri članku: 1318-0207NUK URN: URN:SI:UM:DK:LDDRZRBVsl