• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Intermolecular interactions in dictating the self-assembly of halogen derivatives of bis-(N-substituted oxamato)palladate(ii) complexes
【24h】

Intermolecular interactions in dictating the self-assembly of halogen derivatives of bis-(N-substituted oxamato)palladate(ii) complexes

机译：决定双 - （N-取代的氧氨酸氧铝酸氨基酯）钯（II）复合物的卤素衍生物自组装的分子间相互作用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three palladium( II ) complexes of formula ( n -Bu _(4) N) _(2) [Pd(4-Fpma) _(2) ] ( 1 ), ( n -Bu _(4) N) _(2) [Pd(4-Clpma) _(2) ]·4H _(2) O ( 2 ) and ( n -Bu _(4) N) _(2) [Pd(4-Brpma) _(2) ]·4H _(2) O ( 3 ) [ n -Bu _(4) N ~(+) = tetra- n -butylammonium cation, 4-Fpma = N -4-fluorophenyloxamate, 4-Clpma = N -4-chlorophenyloxamate and 4-Brpma = N -4-bromophenyloxamate] have been prepared and their structures determined by single crystal X-ray diffraction. Each palladium( II ) ion in 1–3 is four-coordinate with two oxygen and two nitrogen atoms from two fully deprotonated oxamate ligands building PdO _(2) N _(2) square planar surroundings, the oxamate ligands exhibiting trans ( 1 and 2 ) and cis ( 3 ) dispositions. The fluoro substituent and the organic counterion in 1 are involved in C–H?F type interactions whereas the anionic complex assembly is driven by C–H?O _(oxamate) interactions. The structures of 2 and 3 shed light on the effects of the different chemical nature of chloro and bromo substituents on the C–H?X interactions joined to hydrogen bonds involving oxamate oxygen atoms and crystallization water molecules. The complex anions in 2 are interlinked by water chains to afford a supramolecular two-dimensional network where O _(w) ?O _(w) , O _(w) ?O _(oxamate) and O _(w) ?Cl hydrogen bonds are involved. The reduction of the polarity of C–Br bonds with respect to C–X (X = F, Cl) is very likely to be one of the key reasons allowing for the cis -arrangement of the two 4-Brpma ligands around each palladium( II ) ion of the anionic complex in 3 in water. These units are interconnected by hydrogen bonds between the peripheral oxamato-oxygens and a four-membered ring of water molecules leading to supramolecular cationic chains extending along the crystallographic a axis.
机译：式（II）式（N-BU _（4）N）_（2）[Pd（4-FPMA）_（2）]（1），（N-BU _（4）N）_（ 2）[Pd（4-CLPMA）_（2）]·4H _（2）o（2）和（n -bu _（4）n）_（2）[pd（4-brpma）_（2） ]·4H _（2）O（3）[N -Bu _（4）N〜（+）=四丁基铵阳离子，4-FPMA = N-氟苯壬基酸盐，4-CLPMA = N -4-4 chlorophenyloxamate和4- Brpma = N -4- bromophenyloxamate]已经制备和它们的结构确定通过单晶X射线衍射。在1-3中的每个钯（II）离子是来自两个氧气和两个来自两个完全去质子化的氧基酸盐配体的氮原子的四坐标，建立PDO _（2）n _（2）方形平面周围环境，氧基酸盐配体呈现Trans（1和2）和CIS（3）处置。氟代取代基和1中的有机抗衡离子参与C-H = F型相互作用，而阴离子复合组件由C-H 2 O _（氧酸）相互作用驱动。氯和溴代取代基不同化学性质对C-Hα的相互作用的不同化学性质的效果的影响。加入涉及氧基氧原子和结晶水分子的氢键。 2中的复杂阴离子由水链相互连接，得到一个超分子二维网络，其中o _（w）ΔO_（w），o _（w），o _（oxamate）和o _（w）？cl涉及氢键。关于C-X（X = F，CL）的C-BR键的极性的降低非常可能是允许每个钯周围的两种4-BRPMA配体的CIS anryments的关键原因之一（ II）3水中阴离子复合物的离子。这些单元通过外周氧沙氧氧 - 氧基和四元环的四元环之间的氢键相互联系，导致沿着晶体沿晶体延伸的超分子阳离子链。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号