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用单晶 X 射线衍射技术测定了三苄基锡5-叔丁基呋喃甲酸酯(1)和三丁基锡5-叔丁基呋喃甲酸酯(2)的分子和晶体结构、1为三斜晶系 PI,晶胞参数 a=1.1253(2),b=1.3138(3),c=1.3920(2)nm,α=89.39(1),β=89.22(1),γ=71.50(2)°,Z=4;2为单斜晶系 P2_1/n,晶胞参数α=1.4732(2),b=1.0266(3),c=1.6385(3)nm,β=101.45(1)°,Z=4.两个化合物中 Sn 原子均分别与5-叔丁基呋喃甲酸的羰基氧配位形成五配位三角双锥构型的线型聚合物.2的 Sn—O 键长为0.2440(2),0.2171(6)nm;与之不同的是1有四种不同的 Sn—O 键,其键长分别为0.2462(6),0.2186(5),0.2389(5)和0.2204(5)nm,Sn(1)和 Sn(2)周围的苄基和呋喃酰基的平面夹角相差很大,是一类由两个中心锡原子组成一个结构单元的五配位线型聚合的有机锡化合物.
The molecular and crystal structures of tribenzyltin 5-tert-butylfuran carboxylate (1) and tributyltin 5-tert-butylfuran carboxylate (2) were determined by single crystal X-ray diffraction. Crystalline PI with a = 1.1253 (2), b = 1.3138 (3), c = 1.3920 (2) nm, α = 89.39 (1), β = 89.22 (1), γ = 71.50 (2) ° , Z = 4; 2 is monoclinic P2_1 / n, the unit cell parameters α = 1.4732 (2), b = 1.0266 (3), c = 1.6385 (3) nm, β = 101.45 The Sn atoms in the two compounds were coordinated with the carbonyl oxygen of 5-tert-butylfurancarboxylic acid to form a five-coordinate triangular double conical linear polymer with a Sn-O bond length of 0.2440 (2) , 0.2171 (6) nm. In contrast, there are four different Sn-O bonds with bond lengths of 0.2462 (6), 0.2186 (5), 0.2389 (5) and 0.2204 (1) and Sn (2) around the benzyl and furanoyl plane angle is very different, is a group of two central tin atoms form a five-coordination linear polymeric organotin compounds.