Synthesis and crystal structures of a new (2,3-(CH3)2C6H3NH3)H2XO4 (X = P, As)

被引：33

作者：

Rayes, A ^{[1
]}

Ben Nasr, C ^{[1
]}

Rzaigui, A ^{[1
]}

机构：

[1] Fac Sci, Lab Chim Mat, Tashkent 7021, Uzbekistan

来源：

MATERIALS RESEARCH BULLETIN | 2004年 / 39卷 / 7-8期

关键词：

optical materials; crystal growth; X-ray diffraction; nuclear magnetic resonance (NMR); crystal structure;

D O I：

10.1016/j.materresbull.2004.02.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of encapsulation of 2,3-dimethylanilinium cation in (H(2)XO(4))(n) polymeric anion chains is to build acentric frameworks that are efficient for non-linear optical (NLO) applications. The synthesis and structures of two new inorganic-organic NLO crystals with general formula (2,3-(CH(3))(2)C(6)H(3)NH(3))H(2)XO(4) (X = P, As) are reported. The magnitude of their second harmonic generations (SHG) responses was found to be between the KDP and urea. They crystallize with monoclinic unit-cells and are isotopic. We have determined the structure of phosphoric salt. The following unit-cell parameters were found: a = 8.866(3) Angstrom, b = 5.909(6) Angstrom, c = 10.644(5) Angstrom, beta = 112.44(1)degrees, V = 515.5(5) Angstrom(3) and D(x) = 1.412 g cm(-3). The space group is P2(1) with Z = 2. The structure was refined with R = 0.041 (R(w) = 0.057) for 1652 reflections with I greater than or equal to 3sigma (I). It exhibits infinite (H(2)PO(4))(n)(n-) chains. The organic groups (2,3-(CH(3))(2)C(6)H(3)NH(3))(+) are anchored between adjacent polyanions through multiple hydrogen bonds. Chemical preparation, crystal structure, calorimetric and spectroscopic investigation are described. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1113 / 1121

页数：9

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