Single Crystal Diffraction Studies at Increased Pressures

292 K showed only small differences in the rate of change of the X-C interactions [X = I 2.8(3) xlO-4 A K-1 X = Br 3.0(2) xlO-4 A K-1] but significantly less variation associated with the stronger O- -I-C halogen bond [1.5(2) xlO-4 A K-1]. Thus, there is a qualitative agreement between the less easily deformed interactions and the accepted order of interaction strengths O I-C N I-C and N- -I-C N- -Br-C [20], 

Being able to conduct diffraction studies at different temperatures is important when correlations between structural changes and other temperature-dependent physical properties are to be studied. Examples include the study of structures that undergo phase transitions. These may be structural phase transitions or other types of transitions such as magnetic order/disorder or onset of superconductivity transitions. 

Recent studies have shown how low-temperature X-ray and neutron diffraction studies can be used to identify the location and population of gas molecules in metal-organic framework materials, providing insight into an important area of application for materials designed by a crystal engineering approach [21]. 

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Single Crystal Diffraction Studies at Increased Pressures 253... 

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