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The First Aluminophosphonate Cluster Analogue of the 4=1 SBU of Zeolites: Structure and Multinuclear Solid‐State NMR Study, Including 1 H NMR
Author(s) -
Azaïs Thierry,
BonhommeCoury Laure,
Vaissermann Jacqueline,
Maquet Jocelyne,
Bonhomme Christian
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200211)2002:11<2838::aid-ejic2838>3.0.co;2-y
Subject(s) - chemistry , microporous material , crystallography , solid state , solid state nuclear magnetic resonance , cluster (spacecraft) , cubane , high resolution , nuclear magnetic resonance spectroscopy , crystal structure , stereochemistry , nuclear magnetic resonance , organic chemistry , physics , remote sensing , computer science , programming language , geology
The first Al−O−P analogue of the so‐called 4=1 Secondary Building Unit (SBU) of zeolites is presented and characterized by single‐crystal X ray diffraction (compound 1 ). The 4=1 building unit structure is very rarely encountered in zeolites and microporous materials. Compound 1 was carefully studied by 31 P and 27 Al solid‐state MAS NMR, resulting in the precise spectroscopic description of the phosphorus and aluminium sites. Unusual 27 Al quadrupolar parameters were measured. Moreover, we also present a high‐resolution solid‐state 1 H NMR study of 1 at 600 MHz and 33 kHz MAS; a remarkable improvement in resolution is observed, allowing definite assignments. The new opportunities offered by very high speed 1 H NMR at high field were further demonstrated with the study of a cubane‐shaped Al−O−P cluster (compound 2 ) and of phenylphosphonic acid. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)