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Gomes LR, Low JN, Correira NRDL, Noguiera TC, Pinheiro AC, de Souza MV, Wardell JL, Wardell SM. Crystal structures and Hirshfeld surface analysis of four 1,4-bis(methoxyphenyl)-2,3-diazabuta-1,3-dienes: comparisons of the intermolecular interactions in related compounds. Z KRIST-CRYST MATER 2018. [DOI: 10.1515/zkri-2018-2113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The crystal structures of four azines, namely 1-3-bis(4-methoxyphenyl)-2,3-diaza-1,4-butadiene, 1, 1,3-bis(2,3-dimethoxyphenyl)-2,3-diaza-1,4-butadiene, 2, 1,3-bis(2-hydroxy-3-methoxyphenyl)-2,3-diaza-1,4-butadiene, 3, and 1,3-bis(2-hydroxy-4-methoxyphenyl)-2,3-diaza-1,4-butadiene, 4, are reported. Molecules of 3 and 4, and both independent molecules of 2, Mol A and Mol B, possess inversion centers. The central C=N–N=C units in each molecule is planar with an (E,E) conformation. The intermolecular interactions found in the four compounds are C–H···O, C–H–N, C–H---π and π---π interactions. However, there is no consistent set of intermolecular interactions for the four compounds. Compound, 1, has a two-dimensional undulating sheet structure, generated from C–H···O and C–H···N intermolecular hydrogen bonds. The only recognized intermolecular interaction in 2 is a C–H···O hydrogen bond, which results in a zig-zag chain of alternating molecules, Mol A and Mol B. While 3 forms a puckered sheet of molecules, solely via C–H···π interactions, its isomeric compound, 4, has a more elaborate three-dimensional structure generated from a combination of C–H···O hydrogen bonds, C–H···π and π···π interactions.
The findings in this study, based on both PLATON and Hirshfeld approaches, for the four representative compounds match well the reported structural findings in the literature of related compounds, which are based solely on geometric parameters.
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Affiliation(s)
- Ligia R. Gomes
- FP-ENAS-Faculdade de Ciências de Saúde, Escola Superior de Saúde da UFP, Universidade Fernando Pessoa , Rua Carlos da Maia, 296 , Porto P-4200-150 , Portugal
- REQUIMTE, Departamento de Química e Bioquímica , Faculdade de Ciências da Universidade do Porto , Rua do Campo Alegre, 687 , Porto P-4169-007 , Portugal
| | - John N. Low
- Department of Chemistry , University of Aberdeen , Old Aberdeen, AB24 3UE, Scotland , UK
| | - Nathasha R. de L. Correira
- FioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos , Rua Sizenando Nabuco, 100, Manguinhos , Rio de Janeiro 21041-250, RJ , Brazil
| | - Thais C.M. Noguiera
- FioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos , Rua Sizenando Nabuco, 100, Manguinhos , Rio de Janeiro 21041-250, RJ , Brazil
| | - Alessandra C. Pinheiro
- FioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos , Rua Sizenando Nabuco, 100, Manguinhos , Rio de Janeiro 21041-250, RJ , Brazil
| | - Marcus V.N. de Souza
- FioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos , Rua Sizenando Nabuco, 100, Manguinhos , Rio de Janeiro 21041-250, RJ , Brazil
| | - James L. Wardell
- Department of Chemistry , University of Aberdeen , Old Aberdeen, AB24 3UE, Scotland , UK
- FioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos , Rua Sizenando Nabuco, 100, Manguinhos , Rio de Janeiro 21041-250, RJ , Brazil
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