A novel organotin complex of μ-pentaoxygen bridged penta（bis-benzyltin） bissalicylate has been synthesized by the reaction of bis-benzyltin oxide and salicylic acid and its structure has been determined by X-ray di...A novel organotin complex of μ-pentaoxygen bridged penta（bis-benzyltin） bissalicylate has been synthesized by the reaction of bis-benzyltin oxide and salicylic acid and its structure has been determined by X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 1.7206（5）, b = 2.1401（6）, c = 2.1488（6）nm, β= 93.325（5）°, V = 7.899（4） nm^3, Z = 4, Dc = 1.564 g/cm^3,μ（MoKα） = 16.17cm^-1, Mr = 1859.94, F（000） = 3692, R1= 0.0755 and wR2= 0.1557. According to structural analysis, the coordination geometry of tin is a distorted trigonal bipyramid, and the ladder-like structure is shaped by four Sn2O2 planar four-membered rings.展开更多
目的:研究天津汉族群体21号染色体上D21S11、D21S1440和Penta D 3个短串联重复序列(STR)基因座遗传多态性,为唐氏综合征(DS)基因诊断和产前基因诊断提供实验依据。方法:收集天津无亲缘关系的汉族个体332例,定量荧光PCR(QF-PCR)扩增STR...目的:研究天津汉族群体21号染色体上D21S11、D21S1440和Penta D 3个短串联重复序列(STR)基因座遗传多态性,为唐氏综合征(DS)基因诊断和产前基因诊断提供实验依据。方法:收集天津无亲缘关系的汉族个体332例,定量荧光PCR(QF-PCR)扩增STR基因座,ABIPRISM 377测序仪检测PCR扩增产物。根据3个STR基因座的基因型分布进行Hardy-Weinberg平衡检验。计算3个STR基因座的基因型频率、观察杂合度(Ho)、多态信息量(PIC)、个体识别率(DP)、非父排除率(PE)等群体遗传学数据。结果:D21S11、D21S1440和Penta D 3个STR基因座分别检出6、4、8个等位基因,基因型分布均符合Hardy-Weinberg平衡定律。3个基因座的Ho分别为0.617、0.705、0.867,PIC分别为0.755、0.596、0.795,DP分别为0.916、0.794、0.931,PE分别为0.312、0.436、0.730。结论:D21S11、D21S1440和Penta D STR基因座在天津汉族群体杂合度高,是21号染色体良好的遗传标记,对DS的基因诊断有指导意义。展开更多
基金This work was supported by the Natural Science Foundation (05JJ40015) and Basic Research(03JZY3036) of the Hunan Province ,Key Foundation of Education Committee of HuNan Province(03A009) and Sustentation Fund of HenYang Science& Technology bureau (2004-25, 2005KG01-09)
文摘A novel organotin complex of μ-pentaoxygen bridged penta（bis-benzyltin） bissalicylate has been synthesized by the reaction of bis-benzyltin oxide and salicylic acid and its structure has been determined by X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 1.7206（5）, b = 2.1401（6）, c = 2.1488（6）nm, β= 93.325（5）°, V = 7.899（4） nm^3, Z = 4, Dc = 1.564 g/cm^3,μ（MoKα） = 16.17cm^-1, Mr = 1859.94, F（000） = 3692, R1= 0.0755 and wR2= 0.1557. According to structural analysis, the coordination geometry of tin is a distorted trigonal bipyramid, and the ladder-like structure is shaped by four Sn2O2 planar four-membered rings.
文摘目的:研究天津汉族群体21号染色体上D21S11、D21S1440和Penta D 3个短串联重复序列(STR)基因座遗传多态性,为唐氏综合征(DS)基因诊断和产前基因诊断提供实验依据。方法:收集天津无亲缘关系的汉族个体332例,定量荧光PCR(QF-PCR)扩增STR基因座,ABIPRISM 377测序仪检测PCR扩增产物。根据3个STR基因座的基因型分布进行Hardy-Weinberg平衡检验。计算3个STR基因座的基因型频率、观察杂合度(Ho)、多态信息量(PIC)、个体识别率(DP)、非父排除率(PE)等群体遗传学数据。结果:D21S11、D21S1440和Penta D 3个STR基因座分别检出6、4、8个等位基因,基因型分布均符合Hardy-Weinberg平衡定律。3个基因座的Ho分别为0.617、0.705、0.867,PIC分别为0.755、0.596、0.795,DP分别为0.916、0.794、0.931,PE分别为0.312、0.436、0.730。结论:D21S11、D21S1440和Penta D STR基因座在天津汉族群体杂合度高,是21号染色体良好的遗传标记,对DS的基因诊断有指导意义。
