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Homochiral metal-organic coordination networks from l-typtophan |
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| Authors: | Yu Xie Hao-Han Wu Yong Cui Long Pan Rong Fan Yang-Chao Tian Liu-Si Sheng |
| Institution: | a Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, 116 Chemistry Building, 96 JinZhai, Hefei, Anhui 230026, PR China b Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA c National Synchrotron Radiation Laboratory, Hefei, Anhui 230029, PR China d State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou 350002, PR China |
| Abstract: | Three homochiral metal-organic coordination networks Co2(l-Trp)2(Py)6] · Py · (ClO4)2 (1), Ni(l-Trp)(Py)3] · H2O · ClO4 (2) and Co2(l-Trp)(INT)2(H2O)2(ClO4)] (3), all containing natural amino acid l-HTrp (l-typtophan), were hydrothermally synthesized and structurally characterized. The compounds 1 and 2 crystallize in the orthorhombic space group C2221, with a = 10.731(2) Å, b = 19.709(4) Å, c = 27.365(6) Å and Z = 4 for 1 and a = 10.710(10) Å, b = 20.088(18) Å, c = 27.63(3) Å and Z = 8 for 2, respectively. The compound 3 has the monoclinic space group P21, with a = 8.1934(14) Å, b = 13.209(2) Å, c = 12.464(2) Å, β = 104.107(3)° and Z = 2. Both 1 and 2 consist of 1D helical chains. Compound 3 is composed of 2D networks, which further assemble into a 3D supramolecular structure via weak interlayer interactions. The optically pure amino acid l-HTrp plays an important role leading to homochiral structures reported here. |
| Keywords: | l-typtophan coordination networks" target="_blank">Natural l-typtophan coordination networks Helical chain 2D networks Homochiral building unit Chiral revulsive |
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