Synthesis, structure and properties of a new layered gadolinium benzenedicarboxylate with piperazine |
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| Authors: | Srinivasan Natarajan A Thirumurugan |
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| Institution: | a Framework Solid Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560 012, India
b Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, India |
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| Abstract: | A hydrothermal reaction of a mixture of Gd(NO3)3, 1,2-benzenedicarboxylic acid (1,2-BDC), piperazine, NaOH and water at 180 °C for three days under autogeneous pressure gave rise to a new compound of the formula C4N2H12]Gd2(H2O)2(C6H4(COO)2)2] (I). The connectivity between GdO8 distorted dodecahedra and 1,2-BDC units gives rise to a two-dimensional structure with large apertures. The fully protonated piperazine molecule occupies the middle of these apertures. The compound has favorable CH?π interactions between the benzene rings of adjacent layers and shows photoluminescence at room temperature. Crystal data: monoclinic, space group = P21/c (No. 14), a = 13.1671(3) Å, b = 13.7336(3) Å, c = 11.3100(1) Å, β = 115.411(1)°, v = 1847.34(6) Å3, Z = 4, R1 = 0.0238 for 2658 reflections I > 2σ(I)]. |
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| Keywords: | Hydrothermal synthesis Gadolinium Phthalic acid Piperazine layered structure |
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