Synthesis and Crystal Structure of a New Pr(Ⅲ)–K(Ⅰ) Heterometallic Oxalate Coordination Polymer

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A new 3D heterometallic coordination polymer, namely [K2Pr2(C2O4)4·H2O]n(1), has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crystallizes in monoclinic system, space group P21/n with a = 12.060(4), b = 8.493(3), c = 15.776(5)(A), β = 93.235(3)°, V = 1613.4(9) 3, Z = 4, Mr = 730.12, Dc = 3.006 Mg/m3, μ = 6.581 mm-1, F(000) = 1368, the final R = 0.0283 and w R = 0.0866 for 2939 observed reflections with I > 2σ(I). Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviours. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated. A new 3D heterometallic coordination polymer, namely [K2Pr2 (C2O4) 4. H2O] n (1), has been successfully synthesized under hydrothermal conditions. X-ray single- crystal diffraction determination reveals that 1 crystallizes in a monoclinic system, space group P21 / n with a = 12.060 (4), b = 8.493 (3), c = 15.776 (5) (A), β = 93.235 (3) °, V = 1613.4 (9) 3, Z = 4, Mr = 730.12, D = 3.006 Mg / m3, μ = 6.581 mm-1, F (000) = 1368, the final R = 0.0283 and w R = 0.0866 for 2939 observed reflections with I> 2σ (I). Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviors. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated.
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