Ab Initio Powder X-Ray Diffraction Structural Analysis of Bispidine Based 1D Coordination Polymer: Insight into their Guest Responsive Behaviour. The first ab initio synchrotron powder X-ray diffraction (XRD) data structure solution, employing real-space global optimization strategies followed by Rietveld refinement, was obtained for a bispidine based one-dimensional ribbon-like coordination polymer (CP) 1.