[Ni(HF2)(3-Clpy)4]BF4 (py = pyridine): Evidence for Spin Exchange Along Strongly Distorted F路路路H路路路F鈥?/sup> Bridges in a One-Dimensional Polymeric Chain
[Ni(HF2)(3-Clpy)4]BF4 (py = pyridine) is a simple one-dimensional (1D) coordination polymer composed of compressed NiN4F2 octahedra that form chains with bridging HF2鈥?/sup> ligands. In spite of significant distortion of the HF2鈥?/sup> bridge, a quasi-1D antiferromagnetic (AFM) behavior was observed with JFHF = 4.86 K.