Citation: Jiang-Gao Mao; Zhike Wang; Abraham Clearfield (2002). Synthesis, Characterization, and Crystal Structures of Two New Divalent Metal Complexes of N,N'-Bis(phosphonomethyl)-1,10-diaza-18-crown-6: A Hydrogen-Bonded 1D Array and a 3D Network with a Large Channel. Inorganic Chemistry, 41, pp. 3713-3720.