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dc.contributor.author Shotonwa, Ibukun O.
dc.contributor.author Boere, Rene T.
dc.date.accessioned 2021-09-22T20:39:40Z
dc.date.available 2021-09-22T20:39:40Z
dc.date.issued 2021
dc.identifier.citation Shotonwa, I. O., & Boere, R. T. (2021). Crystallographic identification of a novel 2,4,5-tri(N-methyl-4-pyridinium)-1,3-thiazole with a complex network of polyiodide/iodine counter ions and co-crystallized cyclododecasulfur (S12). European Journal of Chemistry, 12(2), 179-186. https://doi.org/10.5155/eurjchem.12.2.179-186.2108 en_US
dc.identifier.uri https://hdl.handle.net/10133/6033
dc.description Open access article. Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0) applies en_US
dc.description.abstract The crystals of an unprecedented 2,4,5-tri(N-methylpyridinium)-1,3-thiazole are monoclinic and belong to the space group P21/c as determined by single-crystal XRD. Crystal data for C21H21I13N4S5.98: monoclinic, a = 7.5627(5) Å, b = 30.6764(19) Å, c = 20.8848(15) Å, β = 91.632(6)°, V = 4843.2(6) Å3, Z = 4, T = 100.01(10) K, μ(Cu Kα) = 67.840 mm-1, Dcalc = 2.977 g/cm3, 17906 reflections measured (7.152° ≤ 2Θ ≤ 162.94°), 17906 unique (Rsigma = 0.0607) which were used in all calculations. The final R1 was 0.1366 (I > 2σ(I)) and wR2 was 0.3926 (all data). The crystal lattice contains 2,4,5-tri(N-methylpyridinium)-1,3-thiazole, molecular iodine and triiodide counterions which interact with one another to coordinatively form polyiodides, as well as a surprising co-crystallized neutral molecule of cyclododecasulfur (S12). Close monitoring of the synthetic procedure reveals chemical condensation and decomposition of the thioamide reagent to be the impetus for the formation of individual components of the crystal lattice. Analysis of the XRD, including a Hirshfeld surface analysis, shows that (a) the crystal lattice has a number of stabilizing Coulombic short contacts such as I∙∙∙I, I∙∙∙S, I∙∙∙C, and C∙∙∙S and non-classical C-H∙∙∙I and C-H∙∙∙S hydrogen bond interactions (b) the iodine/iodide network are major determinants in the stability of its crystal lattice despite the reduced occupancies of sulfur and (c) the Hirshfeld analysis in comparison with the conventional Mercury visualization program was able to simplify, identify and quantify complex atom-atom interactions such as H∙∙∙H and N∙∙∙I in its crystal lattice. Herein, it is reported, for the first time, the formation of co-crystallized, neutral cyclododecasulfur (S12) from thioamide as the sulfur source. S12 displays a consistent geometry and comparable average S-S distances, S-S-S angles and torsion angles with previously reported crystal structures of S12. The complex network facilitated by the formation of polyiodides via the interaction of symmetric and asymmetric triiodides and iodine has resulted in quite strong interactions that are less than the sums of the van der Waals radii of two connected atoms as well as an array of fascinating geometrical alignments such as T-shape, trigonal pyramidal and L-shape. en_US
dc.language.iso en_US en_US
dc.publisher Atlanta Publishing House en_US
dc.subject 1,3-Thiazole en_US
dc.subject Sulfur heterocycles en_US
dc.subject Crystal engineering en_US
dc.subject Single crystal structure en_US
dc.subject.lcsh Sulfur
dc.subject.lcsh Iodine
dc.subject.lcsh Crystallography
dc.title Crystallographic identification of a novel 2,4,5-tri(N-methyl-4-pyridinium)-1,3-thiazole with a complex network of polyiodide/iodine counter ions and co-crystallized cyclododecasulfur (S12) en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Chemistry and Biochemistry en_US
dc.description.peer-review Yes en_US
dc.publisher.institution Lagos State University en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.url https://doi.org/10.5155/eurjchem.12.2.179-186.2108 en_US


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