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X-ray powder diffraction analysis of adducts triglycine fluoroberyllic acid and triglycine selenic acid for pyroelectric application

Published online by Cambridge University Press:  05 March 2012

Yunxia Che ,
Jimin Zheng ,
Jianmin Hao  and
Lianqing Chu
Yunxia Che
Affiliation:
Department of Chemistry Nankai University, 94 Weijin Road Tianjin, 300071, People’s Republic of China
Jimin Zheng
Affiliation:
Department of Chemistry Nankai University, 94 Weijin Road Tianjin, 300071, People’s Republic of China
Jianmin Hao
Affiliation:
Tianjin Electronic Materials Research Institute, Tianjin, 300192, People’s Republic of China
Lianqing Chu
Affiliation:
Tianjin Electronic Materials Research Institute, Tianjin, 300192, People’s Republic of China
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Abstract

Two adducts (NH2CH2COOH)3⋅H2BeF4(TGFb) and (NH2CH2COOH)3⋅H2SeO4(TGSe) were obtained and characterized by X-ray powder diffraction. The samples were indexed using the TREOR program [Werner, Z. Kristallogr. Kristallogeom. Kristallphys. Kristallchem. 120, 375–387 (1964)] on a monoclinic unit cell. The lattice parameters of adducts TGFb and TGSe were refined by a least-squares method using the Lattice Constant Refinement Program of the Rikagu software. The refined lattice parameters are a=9.1589(9) Å, b=12.6204(13) Å, c=5.6966(8) Å, β=105.451(9)° for TGFb. The Smith and Snyder figure [Smith and Snyder, J. Appl. Crystallogr. 12, 60–65 (1979)] is F30=39.4(0.0141,54). The refined lattice parameters a=9.5063(11) Å, b=12.8281(10) Å, c=5.8682(7) Å, β=110.353(77)° for TGSe. The Smith and Snyder figure is F30=39(0.0106,73). The powder diffraction results are in agreement with those obtained from single crystal structure data.

Type
New Diffraction Data
Information
Powder Diffraction , Volume 16 , Issue 3 , September 2001 , pp. 167 - 169
Copyright
Copyright © Cambridge University Press 2001

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References

Pepinsky, R., et al. (1956). “Ferroelectricity and structure of triglycine fluoberyllate and isomorphism,” Bull. Am. Phys. Soc. BAPSA6 II, 220. bap, BAPSA6 Google Scholar
Smith, G. S., and Snyder, R. L. (1979). “FN: A criterion for rating powder diffraction patterns and evaluating the reliability of powder pattern indexing,” J. Appl. Crystallogr. JACGAR 12, 60–65. acr, JACGAR CrossRefGoogle Scholar
Werner, P. E. (1964). Z Kristallogr, Kristallgeom., Kristallphys., Kristallchem. ZKKKAJ 120, 375–387., ZKKKAJ CrossRefGoogle Scholar