Syntheses and crystal structures of two new pentaborates
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)
Two new pentaborates, [Zn(DIEN){sub 2}][B{sub 5}O{sub 6}(OH){sub 4}]{sub 2} (DIEN=diethylenetriamine) (I) and [B{sub 5}O{sub 7}(OH){sub 3}Zn(TREN)] (TREN=tris(2-aminoethyl)amine) (II), have been hydrothermally synthesized and characterized by single crystal X-ray diffraction, FTIR, elemental analysis and thermogravimetric analysis. Compound I crystallizes in the monoclinic system, space group P2{sub 1}/c (No. 14), a=8.5686(2)A, b=11.7883(3)A, c=14.5407(6)A, {beta}=91.259(2){sup o}, V=1468.39(8)A{sup 3}, Z=2. The structure consists of isolated borate polyanion [B{sub 5}O{sub 6}(OH){sub 4}]{sup -} and zinc complex cation [Zn(DIEN){sub 2}]{sup 2+}. The anionic units, [B{sub 5}O{sub 6}(OH){sub 4}]{sup -}, are linked by hydrogen bonds to form a 3D supramolecular network containing large channels, in which the templating [Zn(DIEN){sub 2}]{sup 2+} cation are located. II is monoclinic, P2{sub 1}/c (No. 14), a=8.9969(2)A, b=20.6903(6)A, c=9.2878(3)A, {beta}=99.635(2){sup o}, V=1704.52(8)A{sup 3}, Z=4. The structure of II is constructed from two distinct motifs, a usual [B{sub 5}O{sub 7}(OH){sub 3}]{sup 2-} cluster and a supporting zinc complex [Zn(TREN)]{sup 2+}, which are integrated through Zn-O-B linkage. This compound represents the first example of the combination of B-O cluster with transition-metal complex.
- OSTI ID:
- 20725829
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 3 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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