New Hybrid Zirconium Aminophosphonates Containing Piperidine and Bipiperidine Groups

The reaction of N-(phosphonomethyl)piperidine and N,N′-bis(phosphonomethyl)bipiperidine with zirconium(IV) in hydrofluoric acid media led to the preparation of two new zirconium fluoride phosphonate derivatives with 1D and 2D structure, respectively. Their structures were solved ab initio from laboratory powder X-ray diffraction (PXRD) data. The monophosphonate derivative, with formula ZrF2(HF)(O3PCH2NC5H10), has a 1D structure (triclinic, space group P1, a = 6.6484(3) A, b = 7.1396(3) A, c = 12.2320(6) A, α = 77.932(4)°, β = 87.031(6)°, γ = 78.953(5)°, V = 557.22(4) A3, and Z = 2) made of inorganic chains constituted from the connection of zirconium octahedra and phosphorus tetrahedra with the piperidine groups bonded on their external part. The diphosphonate derivative, with formula Zr2F4(HF)2(O3PCH2)NC10H18N(CH2PO3), has a 2D structure (triclinic, space group P1, a = 6.6243(3) A, b = 7.2472(4) A, c = 12.2550(7) A, α = 102.879(4)°, β = 100.29(1)°, γ = 101.287(7)°, V = 547.03(4) A3, and Z = 1) composed...