Metal-organic magnets are of interest primarily due to the synthetic versatility enabled by the vast array of organic complexes which can be used to coordinate magnetic ions and molecules. The metal-organic material Cu2F(HF)(HF2)(pyz)4](SbF6)2 is a new example of a low dimensional antiferromagnet with an unusual phase diagram. This proposal seeks to explore the H-T phase diagram of the Cu2F(HF(HF2)(pyrazine)4](SbF6) as a step towards providing further insight into the magnetic interactions in these fascinating systems.We propose to perform neutron diffraction experiments on the WISH diffractometer to determine the magnetic structure in the low field and high field regions of the phase diagram of Cu2F(HF)(HF2)(pyz)4](SbF6)2. Large deuterated single crystals (with masses as large at 800 mg) have already been synthesized for the proposed work.