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首页> 外文期刊>Phosphorus, Sulfur, and Silicon and the Related Elements >S=O center dot center dot center dot S=O INTERACTIONS AS A DRIVING FORCE FOR LOW-TEMPERATURE CONFORMATIONAL REARRANGEMENT OF STABLE H-BONDING {S(O)-CH2-CH2-OH center dot center dot center dot}(2) SYNTHON IN TWO MODIFICATIONS OF DIASTEREOMERIC PINANYL SULFOXIDES CO-CRYSTAL
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S=O center dot center dot center dot S=O INTERACTIONS AS A DRIVING FORCE FOR LOW-TEMPERATURE CONFORMATIONAL REARRANGEMENT OF STABLE H-BONDING {S(O)-CH2-CH2-OH center dot center dot center dot}(2) SYNTHON IN TWO MODIFICATIONS OF DIASTEREOMERIC PINANYL SULFOXIDES CO-CRYSTAL

机译:S = O中心点中心点中心点S = O相互作用作为稳定H键{S(O)-CH2-CH2-OH中心点中心点中心点}的低温构象重排的驱动力(2)合成非对映体吡喃磺酰胺共晶体的两种修饰

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摘要

For the triclinic and monoclinic modifications of diastereomeric pinanyl sulfoxides co-crystal, remarkable alterations in unit cell parameters by transition from 293 to 150 ? were ascertained. Such alterations are accompanied by conformational restructuring of a stable hydrogen-bonded synthon from an unfolded to a folded form. The driving force of this restructuring is the tendency to form S=O center dot center dot center dot S=O interactions, which show up in the low-temperature phases of both polymorphs. These are well-supported by the methods of quantum chemistry (DFT, B97-D/6-31G(d,p), AIM All).
机译:对于非对映体pin氧基亚砜共晶的三斜晶和单斜晶修饰,通过从293到150?的转变,晶胞参数发生了显着变化。确定。这种改变伴随着稳定的氢键合成子从展开形式到折叠形式的构象重组。这种重组的驱动力是趋于形成S = O中心点中心点中心点S = O相互作用,这在两种多晶型物的低温相中都显示出来。这些都得到了量子化学方法(DFT,B97-D / 6-31G(d,p),AIM All)的充分支持。

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