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Enumeration of Stereoisomers of Chiral and Achiral Derivatives of Monocyclic Cycloalkanes Having Heteromorphous Alkyl Substituents with Distinct Length <i>k</i>
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作者 Alphonse Emadak Ibrahim Mbouombouo Ndassa +2 位作者 Beauregard Thomas Makon Issofa Patouossa Robert Martin Nemba 《Computational Chemistry》 2019年第3期72-93,共22页
A combinatorial method based on the determination of the averaged weight of permutations controlling the chirality/achirality fittingness of 2n substitution sites of the monocyclic cycloalkane allows to obtain general... A combinatorial method based on the determination of the averaged weight of permutations controlling the chirality/achirality fittingness of 2n substitution sites of the monocyclic cycloalkane allows to obtain generalized functional equations for direct enumeration of enantiomers pairs and achiral skeletons of any derivatives of monocyclic cycloalkanes having heteromorphic alkyl substituents with the distinct length k with the empirical formula , wherein at least two alkyl groups??of the distinct size ?each. ?is the number of alkyl radicals ?of the system??verifying the relation . The integer sequences of enantiomer pairs and achiral skeletons are given for substituted derivatives of monocyclic cycloalkane for n = 3, 4 and k = 3, 4, 5. The composite stereoisomerism of this particular compound is also highlighted. 展开更多
关键词 enumeration STEREOISOMER Chirality Achirality Monocyclic CYCLOALKANE Order of ALKYL Trees Polyalkylation
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具有D_(2h)对称性或D_(2h)包含的子对称的三环癸烷的立体异构体计数
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作者 耐登 王玉刚 王建基 《内蒙古师范大学学报(自然科学汉文版)》 CAS 1997年第1期56-60,共5页
利用Polya计数定理和双陪集的方法求出具有D2h对称性或D2h包含的子对称的三环癸烷的立体异构体数,纠正了S.Fujita的错误,指出其产生错误的原因.
关键词 计数 三环癸烷 立体异构 对称性
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