Structural Information from Neutron Diffraction

摘要: Neutron diffraction from single crystals and powders is a powerful technique for investigating the crystal structures of zeolites microporous materials, as well other inorganic compounds. Whereas X-ray method by which framework new are generally determined, either laboratory or synchrotron radiation source, neutrons can be used to probe in greater detail arrangements water molecules, hydrogen bonds cations cavities, location adsorbed molecules. The ordering tetrahedral atoms also investigated. therefore complementary investigative techniques such magic-angle-spinning NMR. Microporous with exception some natural minerals, do not form good quality size suitable single-crystal neutron diffraction. Powder that most usually applied. However, materials where available, this preferred approach, because absence peak overlap greatly enhances reliability refinements complex structures. investigation powder was reviewed 1986 Newsam [1]. This article will review work around period onwards, previous studies. Other articles interest cover many practical aspects include reviews Baerlocher [2], McCusker [3], [4, 5], Cheetham Wilkinson [6].