The Origin of Nonlinearities in K[B5O6(OH)4] · 2 H2O Crystal
✍ Scribed by Dongfeng Xue; Siyuan Zhang
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 253 KB
- Volume
- 200
- Category
- Article
- ISSN
- 0370-1972
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✦ Synopsis
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Large single crystals of the polar, hydrated pentaborates Me[B 5 O 6 (OH) 4 ]•2H 2 O (Me = Rb, NH 4 ) were grown from aqueous solutions. The structure of NH 4 [B 5 O 6 (OH) 4 ]•2H 2 O was redetermined and proved to be orthorhombic (space group Aba2 (No. 41) with a = 11.3192(7) Å, b = 11.0261(8) Å, c
Infrared spectra of and of indicate weak to moderate NÈHAE AE AEN (N 2 H 5 ) 2 HGaF 6 AE 2H 2 O ( N 2 H 5 ) 2 HFeF 6 AE 2H 2 O hydrogen bonding. Data are interpreted in terms of a double minimum symmetrical potential well with a high barrier and statistical distribution of hydrogen in the minima on
Bis(disulfido) bridged Nb IV cluster oxalate complexes [Nb 2 (S 2 ) 2 (C 2 O 4 ) 4 ] 4± were prepared by ligand substitution reaction from the aqua ion [Nb 2 (l-S 2 ) 2 (H 2 O) 8 ] 4+ and isolated as K 4 (3). The crystal structures of 1 and 2 were determined. The crystals of 1 belong to the space