Flux synthesis of three-dimensional open-framework zinc phosphite and manganese phosphite-oxalate with 12-ring channels

详细信息    查看全文

• 作者：Zhien Lin ; Hari Pada Nayek ; Stefanie Dehnen
• 关键词：Flux synthesis ; Open-framework ; Zinc phosphite ; Manganese phosphite-oxalate ; 12-Ring channel
• 刊名：Microporous and Mesoporous Materials
• 出版年：2009
• 出版时间：November 2009
• 年：2009
• 卷：126
• 期：1-2
• 页码：95-100
• 全文大小：634 K

文摘

New three-dimensional open-framework zinc phosphite and manganese phosphite-oxalate, H₂dah·Zn₃(HPO₃)₄ (1) and H₂dab·Mn₂(HPO₃)₂(C₂O₄)(H₂O)₂ (2), were prepared in a flux of phosphorous acid without the addition of water as a solvent (dah = 1,7-diaminoheptane, dab = 1,4-diaminobutane). Compound 1 is constructed from strictly alternating ZnO₄ tetrahedra and HPO₃ pseudo pyramids, and has zigzag 12-ring channels running along the [0 0 1] direction. Compound 2 consists of neutral manganese phosphites layers, which are pillared by oxalate ligands to form a three-dimensional hybrid framework with 12-ring channels running along the [0 1 0] direction. Magnetic susceptibility measurements demonstrate the existence of antiferromagnetic interaction in 2. Crystal data: 1, orthorhombic, Pbcn, a = 9.9096(8) Å, b = 15.6780(6) Å, c = 13.8022(6) Å, V = 2144.3(2) Å³, Z = 4; 2, monoclinic, P2₁/n, a = 5.616(3) Å, b = 15.431(3) Å, c = 9.445(3) Å, β = 91.72(2)°, V = 818.2(5) Å³, Z = 2.