We have constructed a novel microwave frequency resonator that can sit within the GEM and POLARIS diffractometers and will allow us to simultaneously collect diffraction and dielectric data for sample materials. We request beam time on POLARIS or GEM to collect simultaneous structural, dielectric and mass spectroscopy data on a new series of compounds, the ammoniates of the cupric halides, CuCl2, CuBr2 and CuI2. The structures of these materials are well know1, 2 in both the diammine, Cu[NH3]2X2, and hexa-ammine, Cu[NH3]6X2, forms. These compounds show good thermal stability, with the diammoniate (Cu[NH3]2X2) stable beyond 300oC. This high temperature stability is of particular interest for gas-filtering and purification applications where tthe coordinated ammonia can eliminate undesirable components, such as NOx, from exhaust streams without thermal loss of ammonia.