Crystal structure of brucite-type cobalt hydroxide β-Co{O(H,D)}2 — neutron diffraction, IR and Raman spectroscopy

High‐Temperature Vibrational Spectra Between Mg (OH)2 and Mg (OD)2: Anharmonic Contribution to Thermodynamics and D/H Fractionation for Brucite

“…The frequency ratios of the OD/OH stretching modes versus temperature, which are measured by both Raman and Fourier transform infrared (FTIR) spectra for these brucite samples. Data points from the literature (at ambient temperature) are plotted in open symbols for Mg (OH) 2 (five‐pointed star: Guo et al, ; diamond: Dawson et al, ; pentagon: Duffy, Hemley, et al, ), Ca (OH) 2 (up triangle: Dawson et al, ), as well as β ‐Co (OH) 2 (left and right triangles: Mockenhaupt et al, ).…”

Effects of dodecyl sulfate and nitrate anions on the supercapacitive properties of α-Co(OH) 2

“…4.6 Å [13,14], and d inter includes the size of intercalated anions and absorptive water in the interlamellar space. The d inter of a-Co(OH) 2 host layers for sample Co(OH) 2 -DS and Co(OH) 2 -NO 3 is calculated to be 8.36 and 3.4 Å, respectively.…”

“…a-and b-form. b-Co(OH) 2 is a stoichiometric phase of the composition Co(OH) 2 with a brucite-like structure (a = 3.12 Å, c = 4.6 Å) [13,14], while a-form Co(OH) 2 has a similar structure to layered double hydroxides (LDHs) that are composed of hydrotalcite-like layers with a positive residual charge and a series of hydrated anions in the interlayer space to keep charge balance, resulting in a substantial expansion on the interlayer spacing (>7 Å) [15][16][17]. The intercalated anions between the hydrotalcite-like host layers of a-Co(OH) 2 are exchangeable, leading to a possibility for adjusting the interlayer spacing [15,18].…”

Oxygen storage/release in cobalt porphyrin electrodeposited films

“…The ␤-Co(OH) 2 hydroxide form shows IR bands around 495-485 cm −1 and 435-425 cm −1 [24,30,31]. The crystallization of this hydroxide without defects does not allow the formation of hydrogen bridges, which can be identified as a very intense band close to 3600 cm −1 originated by the vibration of free OH groups.…”