X-ray powder diffraction data for holmium nitrate pentahydrate

Abstract

X-ray powder diffraction data, unit-cell parameters, and space group for the holmium nitrate pentahydrate Ho(NO3)3•5H2O are reported [a = 6.642(8) Å,b = 9.55(2) Å,c = 10.56(2) Å,α = 63.672(1)°,β = 84.622(2)°,γ = 76.085(2)°, unit-cell volumeV = 582,74 Å3,Z = 2, space groupP-1]. Ho(NO3)3•5H2O is isostructural with ytrium nitrate pentahydrate (PDF 01-75-2104) (ICDD, 2011). All measured lines were indexed and are consistent with theP-1 space group. No detectable impurities were observed.

Rebuttal of the Existence of Solid Rare Earth Bicarbonates and the Crystal Structure of Holmium Nitrate Pentahydrate

“…In agreement with the literature [11,12] we synthesized the pentahydrate of holmium nitrate at room temperature and solved the crystal structure, which is isotypic to other rare earth nitrate pentahydrates.…”

“…Both methods show that holmium nitrate pentahydrate, instead of hexahydrate, was formed. The X‐ray powder pattern fits to the reference of Maixner and Bartůnĕk (Figure ) . During thermal decomposition to Ho 2 O 3 , a mass loss of 56.8 wt % was observed, which fits to the theoretical mass loss of 57.1 wt % (Figure ).…”

“…The X-ray powder pattern fits to the reference of Maixner and Bartůnȇk ( Figure 5). [11] During thermal decomposition to Ho 2 O 3 , a mass loss of 56.8 wt % was observed, which fits to the theoretical mass loss of 57.1 wt % ( Figure 6). The decomposition process involves the loss of water and certain nitrous gases, as described by Balboul.…”

“…Powder‐XRD pattern of holmium nitrate pentahydrate comparing to the reference pattern of Maixner and Bartůnĕk …”

“…Powder-XRD pattern of holmium nitrate pentahydrate comparing to the reference pattern of Maixner and Bartůnȇk. [11] The crystal structure of holmium nitrate consists of isolated [Ho(NO 3 ) 3 (H 2 O) 4 ] building blocks. All nitrate ions are bonded bidentate to the holmium(III) ion, which is coordinated by ten oxygen atoms.…”