Correlation of one-bond 15N13C, 15NM, 29SiX (M = 11B, 29Si, 119Sn, X = 1H, 13C) nuclear spin-spin coupling constants with the structure of metallatranes in solution
作者:E. Kupče、E. Liepiņš、A. Lapsiņa、I. Urtāne、G. Zelčāns、E. Lukevics
DOI:10.1016/0022-328x(85)87033-9
日期:1985.1
silatranes and germatranes were measured and considered together with the literature data on 15N119Sn and 119Sn13C couplings in stannatranes. The quantitative pattern of structural variations in metallatranes revealed by analysis of X-ray data was used for the interpretation of the results. 1J(15N13C) coupling constants quantitatively describe the increase in nitrogen pyramidality with the strengthening
在15 N 13 C,15 N 11 B,15 N 29的Si,29 Si 1 H和29 Si 13下1键在耦合常数15 N-标记boratranes,silatranes和germatranes测量并一起考虑与文献数据15 N 119 Sn和119 Sn 13在stannatranesç耦合。通过X射线数据分析揭示的金属戊烷中结构变化的定量模式用于解释结果。1 J(15 N 13 C)偶合常数定量描述与加强施主-受主(DA)键ñ→M在溶液中在氮气pyramidality的增加。DA键N→M的偶合常数用费米接触相互作用来解释。1 Ĵ(15 N 29 Si)的值用于预测键顺序和silatranes N个→Si键的长度。在silocanes,silatranes的二环类似物,线性相关被发现之间1 Ĵ(15 N 29Si)值和DA键在溶液中裂解的自由活化能。后者被用来估算硅杂