A new calcium tetraphosphonate containing small pores, Ca[(HO3PCH2)2N(H)-CH2C6H4CH2-N(H)(CH2PO3H2] • 2H2O

被引：38

作者：

Stock, N ^{[1
]}

Stoll, A ^{[1
]}

Bein, T ^{[1
]}

机构：

[1] Univ Munich, Dept Chem, D-81377 Munich, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2004年 / 69卷 / 1-2期

关键词：

D O I：

10.1016/j.micromeso.2003.12.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The new calcium tetraphosphonate, Ca[(HO3PCH2)(2)N(H)-CH2C6H4CH2-N(H)(CH2PO3H)(2)].2H(2)O (1, CaH6L) was hydrothermally synthesized from CaCl2 and N,N,N',N'-tetrametylphosphono-1-aminomethyl-benzylamine, (H2O3PCH2)(2)N-CH2C6H4CH2-N(CH2PO3H2)(2)(H8L). The structure was determined from single crystal X-ray diffraction data (triclinic, P-1. with a = 9.0339(11), b = 10.8275(14), c = 11.3519(15) Angstrom,alpha = 93.487(16), beta = 95.629(15), gamma = 92.344(15)degrees, V - 1101.8(2)10(6) Angstrom(3), Z = 2, Rl = 0.0361, wR2 = 0.0794) and contains the zwitter-ions [(HO3PCH2)(2)N(H)-CH2C6H4CH2-(H)N(CH2PO3H)(2)](2-). It is built from alternating corner-linked CaO6- and PO3C-polyliedra forming a two-dimensional net of 8-rings. These nets are connected by the xylenediamine groups to form a porous pillared structure. Thermogravimetric measurements show the loss of two H2O molecules per formula unit up to similar to250degreesC, while temperature-dependent XRD measurements shows structural stability up to 290degreesC. The reversible adsorption of the crystal water takes place at room temperature. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：65 / 69

页数：5

共 33 条

[1] REDETERMINATION OF THE BETA-CA2P2O7 STRUCTURE [J].