The crystal structure of N‐methylphenazinium tetracyanoquinodimethanide

The difference between metallic and insulating salts of tetracyanoquinodimethone (TCNQ): how to design an organic metal

Electric and magnetic properties of linear conducting chains

Design and synthesis of organic metals

The base-stacking patterns in over 70 published crystal structures of nucleic acid constituents and polynucleotides were examined. Several recurring stacking patterns were found. Base stacking in the solid state apparently is very specific, with particular modes of interaction persisting in various crystalline environments. The vertical stacking of purities and pyrimidines in polynucleotides is similar to that observed in crystals of nucleic acid constituents. Only partial base overlap was found in the majority of the structures examined. Usually, the base overlap is accomplished by positioning polar substituents over the ring system of an adjacent base. The stacking interactions are similar to those found in the crystal structures of other polar aromatic compounds, but are considerably different from the ring–ring interactions in nonpolar aromatic compounds. Apparently, dipole-induced dipole forces are largely responsible for solid-state base stacking. It is found that halogen substituents affect base-stacking patterns. In general, the presence of a halogen substituent results in a stacking pattern which permits intimate contact between the halogen atom and adjacent purine or pyrimidine rings. Considering differences in the stacking patterns found for halogenated and nonhalogenated pyrimidines, a model is proposed to account for the mutagenic effects of halogenated pyrimidines.

Stereochemistry of Nucleic Acids and Their Constituents. X. * Solid-state Base-Stacking Patterns in Nucleic Acid Constituents and Polynucleotides

Electronic spectra of several TCNQ, complexes have been measured with single crystals by the transmission method. The assignment of electronic transitions are presented based on the electronic stru...

The crystal structure of N‐methylphenazinium tetracyanoquinodimethanide

Citations

The difference between metallic and insulating salts of tetracyanoquinodimethone (TCNQ): how to design an organic metal

Electric and magnetic properties of linear conducting chains

Design and synthesis of organic metals

Stereochemistry of Nucleic Acids and Their Constituents. X. * Solid-state Base-Stacking Patterns in Nucleic Acid Constituents and Polynucleotides

Electronic spectra and electronic structure of TCNQ complexes.

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