Synchrotron X-ray studies of metal-organic framework M2(2,5-dihydroxyterephthalate), M= (Mn, Co, Ni, Zn) (MOF74)

M2(dhtp)·nH2O (M= Mn, Co, Ni, Zn; dhtp = 2,5-dihydroxyterephthalate), known as MOF74, is a family of excellent sorbent materials for CO2that contains coordinatively unsaturated metal sites and a honeycomb-like structure featuring a broad one-dimensional channel. This paper describes the structural feature and provides reference X-ray powder diffraction patterns of these four isostructural compounds. The structures were determined using synchrotron diffraction data obtained at beam line 11-BM at the Advanced Photon Source (APS) in the Argonne National Laboratory. The samples were confirmed to be hexagonal R 3(No. 148). From M= Mn, Co, Ni, to Zn, the lattice parameter aof MOF74 ranges from 26.131 73(4) Å to 26.5738(2) Å, cfrom 6.651 97(5) to 6.808 83(8) Å, and Vranges from 3948.08 Å3to 4163.99 Å3, respectively. The four reference X-ray powder diffraction patterns have been submitted for inclusion in the Powder Diffraction File (PDF).