Mu-7, a New Layered Aluminophosphate [CH3NH3]3[Al3P4O16] with a 4 × 8 Network: Characterization, Structure, and Possible Crystall
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- 作者：L. Vidal ; C. Marichal ; V. Gramlich ; J. Patarin ; and Z. Gabelica
- 刊名：Chemistry of Materials
- 出版年：1999
- 出版时间：October 1999
- 年：1999
- 卷：11
- 期：10
- 页码：2728 - 2736
- 全文大小：140K
- 年卷期：v.11,no.10(October 1999)
- ISSN：1520-5002
文摘
The title compound, Mu-7, is a new layered aluminophosphate. It was obtained from aquasi-nonaqueous system involving methylformamide (MF) as solvent in addition to restrictedamounts of water. MF is decomposed into methylamine during synthesis and the latter isoccluded into the interlayer spacing of the material. The structure was determined by single-crystal X-ray diffraction. The symmetry is triclinic, space group P
, a = 8.368(7), b = 11.274(10), c = 11.462(12) Å, 
= 72.40(7), 
= 89.45(8), and 
= 85.37(7)
. Mu-7 is built fromzigzag ladder-type chains connected to form layers containing only four- and eight-memberedrings. Mu-7 is the first lamellar aluminophosphate having such a 4 × 8 network.Characterization of the new compound by 13C, 27Al, and 31P solid-state NMR spectroscopy,bulk chemical analysis and TG/DSC is reported. A possible crystallization mechanism basedon the condensation between "parent" ([AlP2O8H2]-) and zigzag ladder-type ([Al4P4O20H4]4-)chains is proposed.
, a = 8.368(7), b = 11.274(10), c = 11.462(12) Å, = 72.40(7), = 89.45(8), and = 85.37(7). Mu-7 is built fromzigzag ladder-type chains connected to form layers containing only four- and eight-memberedrings. Mu-7 is the first lamellar aluminophosphate having such a 4 × 8 network.Characterization of the new compound by 13C, 27Al, and 31P solid-state NMR spectroscopy,bulk chemical analysis and TG/DSC is reported. A possible crystallization mechanism basedon the condensation between "parent" ([AlP2O8H2]-) and zigzag ladder-type ([Al4P4O20H4]4-)chains is proposed.