| 基于N-乙酰-L-酪氨酸构筑的两例纯手性钴(Ⅱ)配合物的合成、结构及性质 |
| Syntheses, Crystal Structures and Properties of Two Homochiral Co(Ⅱ) Complexes Based on N-Acetyl-L-tyrosine |
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| 摘要: 利用手性配体N-乙酰-L-酪氨酸(Hacty)与钴盐通过溶液法合成了2例纯手性配合物{[Co(acty)(bpp)2(H2O)2](NO3)·2H2O}n(1)和{[Co2(acty)2(bpe)3(H2O)3](ClO4)2·4H2O}n(2)(bpp=1,3-联(4-吡啶)丙烷,bpe=1,2-联(4-吡啶)乙烷),并对它们进行了元素分析(EA)、红外光谱(IR)、紫外光谱(UV)、热重(TG)、粉末X射线衍射(PXRD)及X射线单晶衍射测定。配合物1属于单斜晶系P21空间群,六配位的Co(Ⅱ)离子被bpp配体连接形成一维右手螺旋链结构。配合物2属于三斜晶系P1空间群,六配位的双核Co(Ⅱ)离子被bpe配体连接形成一维带状链结构。在氢键的作用下,它们均形成三维超分子结构,深入讨论了不同构型的含N辅助配体对配合物结构的影响。此外,测定了2例手性配合物的圆二色(CD)光谱。 |
| 关键词: 钴配合物 N-乙酰-L-酪氨酸 晶体结构 纯手性配合物 |
| 基金项目: 国家自然科学基金(No.21141002)和河北省自然科学基金(No.B2012205040)资助项目。 |
| Abstract: Two novel homochiral coordination polymers based on N-acetyl-L-tyrosine (Hacty), {[Co(acty)(bpp)2(H2O)2](NO3)·2H2O}n(1) and {[Co2(acty)2(bpe)3(H2O)3](ClO4)2·4H2O}n(2) (bpp=1,3-di(4-pyridyl)propane, bpe=1,2-di(4-pyridyl)ethane) have been synthesized and characterized by elemental analyses, IR, UV, TG, PXRD, single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P21, and the six-coordinated Co(Ⅱ) ions are bridged by bpp ligands, exhibiting a 1Dright-handed helical chain structure. Complex 2 belongs to the triclinic space group P1, and the six-coordinated dinuclear Co(Ⅱ) ions are bridged by bpe ligands, forming a 1Dribbon chain structure. The two different 1Dchains are further extended into 3Dsupramolecular architectures through hydrogen-bonding interactions. The effect of different N-donor ancillary ligands on the structural assembly and diversity has been further discussed. Furthermore, circular dichroism spectra (CD) of compounds 1 and 2 were investigated. |
| Keywords: cobalt(Ⅱ) complex N-acetyl-L-tyrosine crystal structure homochiral complex |
| 投稿时间：2015-12-17 修订日期：2016-04-15 |
| 摘要点击次数: 1953 |
| 全文下载次数: 1618 |
| 马宁,宋会花,于海涛.基于N-乙酰-L-酪氨酸构筑的两例纯手性钴(Ⅱ)配合物的合成、结构及性质[J].无机化学学报,2016,32(6):1078-1088. |
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