Variable temperature studies of tetrapyridinesilver(I) hexafluorophosphate and tetrapyridinesilver(I) hexafluoroantimonate

Abstract

As part of a larger study into phase transitions, the structures of tetrapyridinesilver(I) hexafluorophosphate, [Ag(C5H5N)4](PF6) or AgPy4PF6, and tetrapyridinesilver(I) hexafluoroantimonate, [Ag(C5H5N)4](SbF6) or AgPy4SbF6, were determined at 300 and 100 K from single-crystal X-ray diffraction. The compounds are isostructural, crystallizing in the space group I\overline{4} with Z′ = 1/4. Over the temperature range studied no evidence of a phase change was found. The dihedral angles between the pyridine rings are compared with similar cations from the literature and discussed.

Keywords

• crystal structure
• tetrapyridinesilver(i) hexafluoroantimonate