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Structural diversity among some dialkyltin(IV) benzoate and related derivatives
Acta Crystallographica Section C ( IF 0.8 ) Pub Date : 2021-04-22 , DOI: 10.1107/s2053229621003545
Anthony Linden , Tushar S. Basu Baul

The molecular structures of five diorganotin(IV) carboxylates, (I)–(V), can be categorized into two main well‐known structural types for such Sn complexes. One is the mononuclear dialkytin(IV) carboxylates with an [R2Sn(LH)2]‐type skew‐trapezoidal bipyramid, where the alkyl ligands are in pseudo‐axial positions and the O atoms from two asymmetrically coordinated bidentate carboxylate ligands are in the equatorial plane. This structure type is adopted by dibutylbis{(E)‐2‐hydroxy‐5‐[(3‐methylphenyl)diazenyl]benzoato}tin(IV) cyclohexane hemisolvate, [Sn(C4H9)2(C14H11N2O3)2]·0.5C6H12, (I), dibenzylbis{(E)‐5‐[(4‐bromophenyl)diazenyl]‐2‐hydroxybenzoato}tin(IV), [Sn(C7H7)2(C13H8BrN2O3)2], (II), and aquadibenzylbis(4‐{(E)‐[(Z)‐4‐hydroxypent‐3‐en‐2‐ylidene]amino}benzoato)tin(IV) benzene disolvate, [Sn(C7H7)2(C12H12NO3)2(H2O)]·2C6H6, (III), although the latter has an additional water ligand to give a distorted pentagonal bipyramidal coordination geometry in which the carboxylate groups are more symmetrically coordinated to the Sn atom than in (I) and (II). The other structure motif is that of the tetranuclear bis(dicarboxylatotetraorganodistannoxanes), {[R2Sn(LH)]2O}2, which contain an Sn4O2 core decorated with four bridging carboxylate ligands, plus two alkyl ligands at each SnIV centre. The complexes octabutyltetrakis{μ‐(E)‐4‐[(4‐hydroxy‐3,5‐dimethylphenyl)diazenyl]benzoato}di‐μ3‐oxido‐tetratin(IV) ethanol disolvate, [Sn4(C4H9)8(C15H13N2O3)4O2]·2C2H6O, (IV), and octabutyltetrakis{(E)‐3‐[(2‐hydroxybenzylidene)amino]propanoato}di‐μ3‐oxido‐tetratin(IV), [Sn4(C4H9)8(C10H10NO3)4O2], (V), display this motif. The structures obtained correlate with the 1:1 and 1:2 stoichiometric ratios of the dialkyltin(IV) and carboxylic acid starting materials in the syntheses. The supramolecular structures arising from consideration of secondary Sn…O interactions and/or classic hydrogen bonds include discrete molecules for (V), centrosymmetric dimers for (I), extended chains for (II) and (III), and sheets for (IV).

中文翻译:

苯甲酸二烷基锡(IV)及其相关衍生物之间的结构多样性

五个二有机锡(IV)羧酸盐(I)-(V)的分子结构可归为此类锡配合物的两种主要的众所周知的结构类型。一种是具有[R 2 Sn(L H)2 ]型偏斜梯形双金字塔的单核二联激酶(IV)羧酸盐,其中烷基配体位于假轴位,两个不对称配位的双齿羧酸盐配体的O原子为在赤道平面上。二丁基双{(E)-2-羟基-5-([(3-甲基苯基)二氮烯基]苯并]}锡(IV)环己烷半溶剂化物[Sn(C 4 H 92(C 14 H 11 N 2 ö 32 ]·0.5C 6 H 12,(I),二苄基双{(E)−5 [[(4-溴苯基)二氮烯基] -2-羟基苯甲酰基}锡(IV),[Sn(C 7 H 72( C 13 H 8 BrN 2 O 32 ],(II)和水合苄基双(4-((E)‐ [(Z)‐4-羟基-3-3‐2‐亚基]氨基}苯并)锡(IV )苯二溶剂化物,[Sn(C 7 H 72(C 12 H 12 NO 32(H 2 O)]·2C 6H 6(III),尽管后者具有附加的水配体以产生扭曲的五边形双锥体配位几何形状,其中与(I)和(II)相比,羧酸盐基团与Sn原子更对称地配位。另一个结构基序是四核双(二羧基四氢呋喃二锡锡氧烷){{R 2 Sn(L H)] 2 O} 2,它包含一个Sn 4 O 2核,该核上装饰有四个桥连的羧酸盐配体,每个核芯上都有两个烷基配体Sn IV中心。络合物octabutyltetrakis {μ-(ë)-4 - [(4-羟基-3,5-二甲基苯基)二氮烯基] benzoato}二μ 3氧化四氢呋喃乙醇,[Sn 4(C 4 H 98(C 15 H 13 N 2 O 34 O 2 ]·2C 2 H 6 O,(IV)和八丁基四烷基{(E基)-3 - [(2-羟基亚苄基)氨基]丙酸根}二μ 3 -oxido-tetratin(IV),[Sn的4(C 4 H ^ 98(C 10 ħ 10 NO 34 Ô 2](V)显示此主题。获得的结构与合成中二烷基锡(IV)和羧酸原料的化学计量比为1:1和1:2相关。考虑到次级Sn…O相互作用和/或经典氢键而产生的超分子结构包括(V)的离散分子,(I)的中心对称二聚体,(II)和(III)的延伸链和(IV)的片层。 。
更新日期:2021-05-05
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