Abstract
S,S′-(Naphthalen-2-ylmethyl sulfanyl (1-p-tolyl-ethylidene) hydrazine (SNM4MA) was prepared by the condensation of S-napthalen-2-ylmethyldithiocarbazate (SNMDTC) and 4-methylacetophenone. Yellow needles of SNM4MA were obtained upon slow evaporation of a 50:50 mixture of acetonitrile and DMSO over a period of weeks. The compound crystallizes in the monoclinic system with the space group C 2/c and Z = 4. The unit cell parameters are a = 7.0221(2) Å, b = 22.8428(6) Å, c = 23.5127(6) Å with β = 94.0222(13)°. Single crystal X-ray analysis shows that the molecule has crystallographic two-fold rotational symmetry coincident with the S–S bond. The title compound exists as a trans–cis conformer in which the naphthalene group is trans with respect to the thione sulfur while the benzyl group adopts a cis geometry. 13C and 1H spectra confirm that the dimeric nature is retained in DMSO solution.
Graphical Abstract
Single crystal X-ray analysis of S,S′-(naphthalen-2-ylmethyl sulfanyl (1-p-tolyl-ethylidene) hydrazine shows that the molecule is dimeric with a two-fold rotational symmetry coincident with the S–S bond via both the thione sulfur atoms. The molecule was found to retain its dimeric structure in dimethylsulfoxide solution.
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Acknowledgments
The authors gratefully acknowledge the Ministry of Science, Technology and Innovation (MOSTI), Malaysia, for funding this research under the Intensification of Research in Priority Areas Scheme (IRPA Grant No. 09-02-04-0755-EA001). FHNF thanks MOSTI, for awarding her a National Science Fellowship and supporting her attachment at the Chemical Crystallography Laboratory, Oxford University.
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How, F.NF., Crouse, K.A., Tahir, M.I.M. et al. Synthesis and Structure Determination of S,S′-(Naphthalen-2-ylmethyl sulfanyl (1-p-tolyl-ethylidene) Hydrazine. J Chem Crystallogr 39, 894–897 (2009). https://doi.org/10.1007/s10870-009-9586-0
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DOI: https://doi.org/10.1007/s10870-009-9586-0