| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1332068 | Journal of Solid State Chemistry | 2011 | 6 Pages |
Three novel hydrated borates Ba2B5O9(OH) (1), Sr2B5O9(OH) (2) and Li2Sr8B22O41(OH)2 (3) have been synthesized hydrothermally and their structures determined. Compounds (1) and (2) are isostructural, crystallizing in space group P21/c and having lattice parameters of a=6.6330(13) Å, b=8.6250(17) Å, c=14.680(3) Å, β=93.46(3)° and a=6.4970(13) Å, b=8.4180(17) Å, c=14.177(3) Å, β=94.35(3)°, respectively. Compound (3) crystallizes in P-1 with lattice parameters of a=6.4684(13) Å, b=8.4513(17) Å, c=14.881(3) Å, α=101.21(3)°, β=93.96(3)°, γ=90.67(3)°. While similar in their axis lengths, (3) differs greatly in structure and formulation from (1) and (2). The structure of (1) and (2) is contrasted to that of the well-known mineral hilgardite (Ca2B5O9Cl·H2O).
Graphical abstractNovel hydrated borate structures.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis and crystal structures of three novel hydrated borates are reported. ► Unique descriptive chemistry governing Li2Sr8B22O41(OH)2 synthesis is discussed. ► Structures of Ba2B5O9(OH) and Sr2B5O9(OH) are contrasted to Ca2B5O9Cl·H2O. ► Structure of Li2Sr8B22O41(OH)2 differs from Ba2B5O9(OH) and Sr2B5O9(OH).
