Aluminophosphates prepared using in situ generated tetramethylammonium cations as structure directing agents

作者：Bao, Zhen-Zhen; Sun, Ai-Huan; Han, Song-De; Li, Jin-Hua; Wang, Guo-Ming^*; Wang, Zong-Hua

来源：Solid State Sciences, 2016, 61: 77-83.

DOI：10.1016/j.solidstatesciences.2016.09.010

• Aluminophosphate
• Crystal structure
• N-methylation
• Solvothermal synthesis

A series of aluminophosphates (AlPOs) with open architectures, namely [dmdabco][Al-2(HPO4)(4)] (1, dmdabco = N,N-dimethyl-1,4-diazabicyclo[2,2,2]octane), [tmpip](0.5)[Al(HPO4)(2)] (2, tmpip = N, N, N, N-tetramethylpiperazinium) and [tmpip][Al-6(PO4)(6)(HPO4)] (3) have been solvothermally synthesized and structurally characterized. The in situ generated templates (dmdabco(2+) and tmpip(2+)) originated from the methylation reactions between methanol solvent and their corresponding aliphatic organic-amine parents: 1,4-diazabicyclo[2,2,2]octane (dabco) for 1, 1-methylpiperazine for 2 and 3. Such a characteristic in situ methylation is distinct from conventional Eschweiler-Clarke methylation with excessive formic acid and formaldehyde. Compounds 1 and 2 possess the same infinite inorganic chains, which are further linked by hydrogen bonds to form 3D supramolecular framework. Compound 3 is built from Al6P6 and Al6P8 building units, giving rise to an open architecture with three-dimensional channel system.

• 出版日期2016-11
• 单位青岛大学