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1-(4-Pyridinio)-2′-[4-pyridinio-(E)-methyl­idene]­hydrazide dinitrate

✍ Scribed by Felloni, Marina ;Hubberstey, Peter ;Schröder, Martin ;Wilson, Claire

Book ID
104479312
Publisher
International Union of Crystallography
Year
2002
Tongue
English
Weight
624 KB
Volume
58
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C 12 H 12 N 4 O 2+ Á2NO 3 À , crystallizes as 1-(4pyridinio)-2 H -[4-pyridinio-(E)-methylidene]hydrazide cations and nitrate anions. An extensive hydrogen-bonding network, primarily NÐHÁ Á ÁO interactions, but with supporting CÐ HÁ Á ÁO contacts, leads to a three-dimensional matrix structure, which is best considered as a cationic framework with bridging nitrate anions. The basic feature of the cationic framework is a zigzag chain, which runs along the [101] direction. The chains pack to generate two-dimensional sheets which lie parallel to the (101) plane and stack in the [101] direction to give the three-dimensional matrix.

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Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.009 A Ê R factor = 0.043 wR factor = 0.114 Data-to-parameter ratio = 15.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

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The fluorescence quantum yield and lifetime of trans-l,2-bis-(1-methyl-4-pyridinio)ethylenediperchlorate, t-BPE 2+ (C104 )2, are respectively 0.01 and < 3 ns in CH3CN. The quantum yield of trans to cis photoisomerization is 0.35\_+0.07. Iodide complexes the olefin in the ground state with an equilib