Chemistry of Boranes. III.¹ The Infrared and Raman Spectra of B₁₂H₁₂ - and Related Anions

Polymorphism and hydrogen discharge from holmium borohydride, Ho(BH4)3, and KHo(BH4)4

“…Several of the absorption bands, at ca. 702, 1020, and 2447 cm e1 match well with the wavelengths of vibrations of [B 12 H 12 ] 2e anion [41,42] [29,30,48]. Thermal decomposition of LiBH 4 doped by b-Ho(BH 4 ) 3 (sample Ho1:12 of a nominal composition: 9LiBH 4 /1b-Ho(BH 4 ) 3 /3LiCl) differs considerably from the thermal decomposition of pure LiBH 4 or a-Ho(BH 4 ) 3 containing LiCl, Fig.…”

Improved hydrogen storage reversibility of LiBH4 destabilized by Y(BH4)3 and YH3

“…This IR peak is found after Y(BH 4 ) 3 decomposition (see Fig. 4b, curve A) and it has also been seen during the decomposition of LiBH 4 [34]. Recent theoretical and experimental investigations revealed that the hydrogen desorption from M(BH 4 ) n follows a multistep reaction, with M 2/n B 12 H 12 as an intermediate compound [25,27,35].…”

Hydrogenation properties of lithium and sodium hydride – closo-borate, [B10H10]2− and [B12H12]2−, composites

“…The IR spectrum of Li 2 B 10 -A has a single large B-H stretching mode at 2500 cm À1 with minor modes at lower wavenumbers consistent with metal closo-borates. 46,47 For Li 2 B 10 -B, the B-H stretching mode at 2500 cm À1 has almost disappeared while B-H stretching modes appear around 2300 cm À1 , which correspond to those of LiBH 4 . 48,49 This work suggests that 1 has a lithium-boron ratio in between Li 2 B 10 H 10 and LiBH 4 , i.e.…”