英语翻译Complex formation of a- and b-cyclodextrinswith isomeric pyridinecarboxylic acids (picolinic,nicotinicand isonicotinic acids) in water were studied by calorimetryand 1H NMR at 298.15 K.The obtained results revealed theweak 1:1 complex for

英语翻译Complex formation of a- and b-cyclodextrinswith isomeric pyridinecarboxylic acids (picolinic,nicotinicand isonicotinic acids) in water were studied by calorimetryand 1H NMR at 298.15 K.The obtained results revealed theweak 1:1 complex for
英语翻译
Complex formation of a- and b-cyclodextrins
with isomeric pyridinecarboxylic acids (picolinic,nicotinic
and isonicotinic acids) in water were studied by calorimetry
and 1H NMR at 298.15 K.The obtained results revealed the
weak 1:1 complex formation governed by the cavity dimensions
and position of the carboxylic group in the pyridine ring.
It was found that selective inclusion complex formation of aand
b-cyclodextrins with nicotinic and isonicotinic acids takes
place.In the case of picolinic acid,the considerable role of
external interactions and formation of less stable complexes
were detected.The location of the carboxylic group in the
meta-position of pyridine ring is more favorable for the
effective binding.The pyridinecarboxylic acids are shallow
inserted into a-cyclodextrin cavity possessing the smaller
diameter,while they are deeply included into b-cyclodextrin
cavity.Thermodynamic parameters of complex formation (K,
DcG0,DcH0 and DcS0) were calculated and discussed in terms
of influence of reagents structure.

英语翻译Complex formation of a- and b-cyclodextrinswith isomeric pyridinecarboxylic acids (picolinic,nicotinicand isonicotinic acids) in water were studied by calorimetryand 1H NMR at 298.15 K.The obtained results revealed theweak 1:1 complex for
与异构吡啶酸（吡啶,烟酸
和异酸）的水热法,研究了
和1H NMR 298.15光所得结果表明,
复杂地层弱1:1由腔尺寸
和立场,羧基中的吡啶环.
结果发现,选择性包合物形成aand
β -环糊精与烟碱酸和异考虑
地点.如吡啶羧酸,在相当大的作用的
外部的相互作用并形成稳定的复合物少
被发现.所在地的羧基的
元吡啶环的立场是更加有利的
有效的约束力.该吡啶酸是浅
插入-环糊精腔拥有较小
直径,而他们深感纳入β -环糊精
腔.热力学参数的复杂地层（钾,
DcG0 ,DcH0和DcS0 ）进行了计算和讨论的条款
影响的试剂结构.