Ph<sub>(3-</sub><i><sub>n</sub></i><sub>)</sub>X<i><sub>n</sub></i>SnCH<sub>2</sub>-16-crown-5 (X = F, Cl, Br, I, SCN; <i>n</i> = 1, 2): Intramolecular O → Sn Coordination versus Ditopic Complexation of Sodium Thiocyanate
作者:Gregor Reeske、Markus Schürmann、Burkhard Costisella、Klaus Jurkschat
DOI:10.1021/om700304p
日期:2007.8.1
organotin-substituted crown ethers Ph(3-n)XnSn-CH2-16-crown-5 (1, n = 0; 2, n = 1, X = I; 3, n = 1, X = Br; 4, n = 1, X = Cl; 5, n = 1, X = F; 6, n = 1, X = SCN; 7, n = 2, X = Cl; 8, n = 2, X = I) is reported. The compounds are characterized by elemental analyses and 1H, 13C, 19F, 23Na, and 119Sn NMR spectroscopy and in the case of compound 4 also by 119Sn MAS NMR spectroscopy. Single-crystal X-ray diffraction
有机锡取代的冠醚Ph (3- n) X n Sn-CH 2 -16-crown-5(1,n = 0; 2,n = 1,X = I; 3,n = 1, X = Br; 4,n = 1,X = Cl; 5,n = 1,X = F; 6,n = 1,X = SCN; 7,n = 2,X = Cl; 8,n = 2, X = I)被报告。这些化合物的特征在于元素分析和1 H13 C,19 F,23 Na和119 Sn NMR光谱,在化合物4的情况下,也采用119 Sn MAS NMR光谱。单晶X射线衍射分析表明为化合物2 - 5与分子内的Sn-O距离测距三角-bipyramidally可配置锡原子2.530(2)(间5)和2.571(1)A(4),而锡原子在化合物1显示出扭曲的四面体构型。化合物7和8中的锡原子是六配位的,分子内Sn-O距离为2.473(1)(7)和2.522(1)Å(7)。NMR