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苦参碱和咖啡因化合物晶体结构研究

The Crystal Structures of Caffeine and Matrine Compounds

【作者】 李丽

【导师】 金志敏;

【作者基本信息】 浙江工业大学 , 生物化工, 2006, 硕士

【摘要】 本文论述了苦参碱和咖啡因分别与高氯酸和几种无机金属盐的化合物,得到了化合物的晶体,用X射线单晶衍射及红外光谱等方法研究了所成化合物的晶体结构。 苦参碱、高氯酸和H2O摩尔比1:2:2复合物:晶体学参数为:分子式C15H22N2O2.2(ClO4).2(H2O),晶体属正交晶系,空间群为P21,晶胞参数为:a=8.4889(7)(?),b=12.5506(11)(?),c=19.6508(17)(?),β=95.573(2)°,V=2083.7(3)(?)3,Z=27。在此复合物中,苦参碱羰基氧原子被质子化。 苦参碱和四氯化铁复合物:晶体学参数为:分子式C15H25N2O+.FeCl4-,晶体属正交晶系,空间群为P 21 21 21,晶胞参数为:a=8.4871(8)(?),b=12.9037(12)(?),c=18.2256(17)(?),V=1996.0(3)(?)3,Z=4,R=0.0544。FeCl4-与苦参碱阳离子通过一个C-H…Cl氢键相连。 苦参碱和氯化锌配合物:晶体学参数为:分子式C15H25Cl3N2OZn,晶体属单斜晶系,空间群为P21,晶胞参数为:a=7.804(1)(?),b=13.597(2)(?),c=9.093(1)(?),β=108.41(1)°,V=915.49(23)(?)3,Z=2。苦参碱配体上的羰基氧原子直接与锌离子进行配位。

【Abstract】 We have synthesized six compounds using Matrine and Caffeine with Perchloric Acid or some metal inorganic acids. The results of X-ray crystal structures of the compounds are following:The 1:2:2 complex of matrine, perchloric acid and water crystallizes in the orthorhombic space group P21 with a = 8.4889(7) A, b = 12.5506(11) A, c = 19.6508(17) A, (3 = 95.573(2)°, V = 2083.7(3) A3, Z = 27. The O atom of carbonyl in the matrine is protonated.The Matrinium Tetrachloroironate crystallizes in the orthorhombic space group P 21 21 21, with a = 8.4871(8) A, b = 12.9037(12) A, c = 18.2256(17) A, V = 1996.0(3) A3, Z = 4, R=0.0544. FeCl4- anion is linked to the matrine cation via hydrogen bond of C-H...C1.The 1:1 complex of matrine and zinc chloride crystallizes in the monoclinic space group P21, with a = 7.804(1) A, b = 13.597(2)A, c = 9.093(1) A, β = 108.41(1)°, V = 915.49(23) A3, Z = 2. In this complex, the matrinium ligand is coordinated with Zn via O atom from carbonyl group.The Caffeinium Perchloride Monohydrate crystallizes in the monoclinic space group P2i/c, with a = 13.061(2) A,b = 6.508(1) A, c -16.963(4) A, p = 112.20(1)°, V = 1335.04(46) A3, Z = 4. Both of the H atoms on perchloride acid and water molecule are disordered.The hexaaquazinc(II) bis(trichlorocaffeine-zincate(II))dihydrateocrystallizes in the monoclinic space group P2i/n, with a = 8.8699(6) A, b =19.7245(13) A, c =10.8701(7) A, £ = 111.508 (1)°, V = 1769.3(2) A3, Z = 4. Caffeine is coordinated with zinc chloride and connected to hexaaquazinc(II) by hydrogen bonds.The Biscaffeine[Tetrachloro-di-copper(II)(H2O)] crystallizes in theo omonoclinic space group P2i/n,with a =9.761(2) A, b - 12.891(3) A, c =10.901(2) A, (3 =110.64(2)°, V = 1283.69(63) A3, Z = 4. The structure is built up by 0-H**-0 hydrogen bonds. There are three C-H"*O intramolecular hydrogen bonds in the caffeine ligandFrom IR we get the information that the bands are red shift if there are hydrogen bonds concerned. Organic complexes which are coordinated with metals have no apparent effect to IR.

【关键词】 生物无机化学苦参碱咖啡因金属氢键红外光谱
【Key words】 Bioinorganic chemistryMatrineCaffeinemetalHydrogen bondIR
  • 【分类号】TQ464
  • 【被引频次】5
  • 【下载频次】438
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