Synthesis and Crystal Structure of a Novel 1D Magnesium(II) Coordination Polymer Constructed by L-Cy

来源 :结构化学 | 被引量 : 0次 | 上传用户:fuyaomama
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A novel coordination polymer [Mg(L)(H2O)2]·H2O] (LH2 = L-cysteic acid) has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal crystallizes in orthorhombic system, space group P212121, with a = 5.962(3), b = 11.224(6), c = 13.664(7) , V = 914.3(8) 3, Z = 4, Mr = 245.50, Dc = 1.783 g/cm3, μ = 0.445 mm–1, flack parameter = 0.32(16), F(000) = 512, the final R = 0.0458 and wR = 0.1172 for 1578 observed reflections with I > 2σ(I). The Mg(II) atom shows an octahedral geometry defined by two carboxyl O atoms from two different L-cysteic acid ligands, one carboxyl O atom and one amino N atom from the adjacent ligand, and two aqua ligands. The Mg(II) atoms are bridged by L-cysteic acid ligands, leading to a 1D infinite zigzag chain. In the structure there are extensive hydrogen bonds, through which the complex completes its 3D framework structure. A novel coordination polymer [Mg (L) (H2O) 2] .H2O] (LH2 = L-cysteic acid) has been synthesized and characterized by elemental analysis, IR and single-crystal X- ray diffraction. The crystal crystallizes in orthorhombic system , space group P212121 with a = 5.962 (3) b = 11.224 (6) c = 13.664 (7)  V = 914.3 83 Z = 4 Mr = 245.50 Dc = 1.783 g / The final R = 0.0458 and wR = 0.1172 for 1578 observed reflections with I> 2σ (I). The Mg (II) atom shows an octahedral geometry defined by two carboxyl O atoms from two different L-cysteic acid ligands, one carboxyl O atom and one amino N atom from the adjacent ligand, and two aqua ligands. The Mg (II) atoms are bridged by L- cysteic acid ligands, leading to a 1D infinite zigzag chain. In the structure there are extensive hydrogen bonds, through which the complex completes its 3D framework structure.
其他文献
Geometrical configurations of 16 substituted biphenyls were computed at the B3LYP/6-311G** level with Gaussian 98 program. Based on linear solvation energy theo
两种规格的扩散皿测定土壤铵态氮的结果差异达到了极显著水平.直径较大的扩散皿测定铵态氮的结果比较高. Differences between the two kinds of diffusion vessels for the
A new cyclodipeptide,cyclo(phenylalanyl-N-methyltyrosyl)1,was isolated from the mycelial solid cultures of Geotrichum candidum.Its structure was elucidated by s
1996年9月18日,一代戏剧电影表演艺术家白杨永远离开了人世。走过76个春秋,饰演了众多中国女性形象,白杨的人品,艺品在中国艺术界有口皆碑。她的逝世引起众多戏迷的磋叹悲伤
农业税附加等村级集体资金及财政转移支付对村级的补助资金,要首先用于农村五保户的供养。各地必须严格按此要求安排使用村级资金,确保五保户的生活水平在农村税费改革后不下
该文对国家重点科技攻关项目黄淮海平原饶阳试区农林复合生态系统作了综合分析,试区由原来的风沙干旱瘠薄盐碱的低产区变为生态环境良好、林茂粮丰的新试区。系统的建立改善
从西双版纳州州府景洪市出发,沿着国道昆洛公路段向西,在离勐海县城约8公里的地方,有两个特殊的寨子,寨中人身穿与当地傣族相似的服饰,住竹楼或平房,说着当地语言又不同于当
Varying degree of velocity anomalies has been appeared in Shijiutuo uplift in Bohai Sea,which is mainly demonstrated in the inconsistent between seismic interpr
β-Trichosanthin,a type 1 ribosome-inactivating protein (RIP) isolated from the root tuber of Trichosanthe kirilowii Maxim,is an isoform of trichosanthin. Here
微课是云学习的一种工具,主要利用微视频为载体的学习方式,包含了教师讲解、演示,辅以课件、案例、素材等学习资源,是一种新型的教学模式和学习方式。近年来在山东省临沂一中