Citation:
LI Boa, FAN Hui-Tao, WANG Zhi-Qianga, FENG Chao-Qiang. Syntheses, Structure and Thermal Analysis of a Cobalt Coordination Polymer with Multiform Helical Features Based on Flexible Iododicarboxylate Ligand and N-donor Ancillary Ligand[J]. Chinese Journal of Structural Chemistry,
;2015, 34(5): 735-740.
doi:
10.14102/j.cnki.0254-5861.2011-0600
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A new 3D complex, [Co(L)(bpe)0.5(H2O)2]n (1, H2L=5-iodo-benzene-1,3-dioxya cetic acid, bpe=1,2-bis(4-pyridyl)ethylene), has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction. It is formulated as C16H16CoINO8, crystallizes in monoclinic, space group P21/c, with a=9.806(2), b=6.5492(13), c=28.187(8) Å, β=100.12(3)°, V=1782.0(7) Å3, Z=4, Dc=1.998 g/m3, F(000)=1052, Μr=536.13, the final R=0.0393 and wR=0.0858 for 3134 observed reflections with I>2σ(I). Complex 1 displays a 3D framework with multiform helical features, left- and right-handed triple helical braids and single helical chains, which can be simplified as a new type of (3,4)-connected lattice with a (6·102)(62·104) Schläfli symbol. Moreover, the thermal analysis of complex 1 has also been investigated.
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Keywords:
- coordination polymer,
- triple helical braid,
- topology
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