STRUCTURES OF CHARGE-PERTURBED AND STERICALLY OVERCROWDED MOLECULES .13. DIPROTONATED TETRA(2-PYRIDYL)PYRAZINE AND ITS CHEMICAL MIMESIS DUE TO DIFFERENT HYDROGEN BRIDGES

被引：63

作者：

BOCK, H ^{[1
]}

VAUPEL, T ^{[1
]}

NATHER, C ^{[1
]}

RUPPERT, K ^{[1
]}

HAVLAS, Z ^{[1
]}

机构：

[1] CZECHOSLOVAK ACAD SCI, INST ORGAN CHEM & BIOCHEM, CS-16610 PRAGUE 6, CZECHOSLOVAKIA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 1992年 / 31卷 / 03期

关键词：

D O I：

10.1002/anie.199202991

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

There are two possible sites for the protons in the title compound. For steric reasons the structure in which the protons each interact with three nitrogen atoms is rejected in favor of the structure depicted on the right. The counterion BPh 4− is essential; when Cl− is the counterion, drastic structural changes are induced in the dication. This phenomenon may also be significant in biologically important structures (nitrogen bases!). (Figure Presented.) Copyright © 1992 by VCH Verlagsgesellschaft mbH, Germany

引用

页码：299 / 301

页数：3

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