Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea
The reaction of N-(2-pyridyl)thiourea with CuCl2 in methanol yields four different crystalline products: yellow dimeric complex, [Cu2Cl2(µ-Cl)2(L)2] (1), red polymeric complex, [Cu3Cl8L2]n (2), orange crystalline product with ionic structure, L2[CuCl4] (3), and colourless ionic compound LCl (4), whe...
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| Format: | Article |
| Language: | English |
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Slovenian Chemical Society
2020-12-01
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| Series: | Acta Chimica Slovenica |
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| Online Access: | https://journals.matheo.si/index.php/ACSi/article/view/6252 |
| _version_ | 1819320245536423936 |
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| author | Sara Tomšič Janez Košmrlj Andrej Pevec |
| author_facet | Sara Tomšič Janez Košmrlj Andrej Pevec |
| author_sort | Sara Tomšič |
| collection | DOAJ |
| description | The reaction of N-(2-pyridyl)thiourea with CuCl2 in methanol yields four different crystalline products: yellow dimeric complex, [Cu2Cl2(µ-Cl)2(L)2] (1), red polymeric complex, [Cu3Cl8L2]n (2), orange crystalline product with ionic structure, L2[CuCl4] (3), and colourless ionic compound LCl (4), where L = 2-amino-[1,2,4]thiadiazolo[2,3-a]pyridin-4-ium cation as a result of oxidative cyclization of N-(2-pyridyl)thiourea. The crystal structures of all these crystalline products have been determined by single-crystal X-ray diffraction analysis. Compound 1 involves a copper(I) ion while in 2 and 3 the copper centre is in the divalent state. 1H NMR spectra for compounds 1–3 are identical and confirm deprotonated thioamide groups of N-(2-pyridyl)thiourea and the formation of a thiadiazolopyridinium cation in solution. The hydrogen bonding and π–π stacking interactions were investigated in the solid state. In addition, all crystalline products 1–4 exhibit also S···Cl bonding interactions which consolidate the complexes into networks. The X-ray diffraction analyses indicate the absence of other crystalline phases in the crude reaction mixture. |
| first_indexed | 2024-12-24T11:16:31Z |
| format | Article |
| id | doaj.art-6b309261117e4a3bbc433fe6f027fb59 |
| institution | Directory Open Access Journal |
| issn | 1318-0207 1580-3155 |
| language | English |
| last_indexed | 2024-12-24T11:16:31Z |
| publishDate | 2020-12-01 |
| publisher | Slovenian Chemical Society |
| record_format | Article |
| series | Acta Chimica Slovenica |
| spelling | doaj.art-6b309261117e4a3bbc433fe6f027fb592022-12-21T16:58:21ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552020-12-016741290130010.17344/acsi.2020.6252908Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thioureaSara TomšičJanez KošmrljAndrej PevecThe reaction of N-(2-pyridyl)thiourea with CuCl2 in methanol yields four different crystalline products: yellow dimeric complex, [Cu2Cl2(µ-Cl)2(L)2] (1), red polymeric complex, [Cu3Cl8L2]n (2), orange crystalline product with ionic structure, L2[CuCl4] (3), and colourless ionic compound LCl (4), where L = 2-amino-[1,2,4]thiadiazolo[2,3-a]pyridin-4-ium cation as a result of oxidative cyclization of N-(2-pyridyl)thiourea. The crystal structures of all these crystalline products have been determined by single-crystal X-ray diffraction analysis. Compound 1 involves a copper(I) ion while in 2 and 3 the copper centre is in the divalent state. 1H NMR spectra for compounds 1–3 are identical and confirm deprotonated thioamide groups of N-(2-pyridyl)thiourea and the formation of a thiadiazolopyridinium cation in solution. The hydrogen bonding and π–π stacking interactions were investigated in the solid state. In addition, all crystalline products 1–4 exhibit also S···Cl bonding interactions which consolidate the complexes into networks. The X-ray diffraction analyses indicate the absence of other crystalline phases in the crude reaction mixture.https://journals.matheo.si/index.php/ACSi/article/view/6252cu(ii) complexcu(i) complexoxidative cyclizationcrystal structurethiourea |
| spellingShingle | Sara Tomšič Janez Košmrlj Andrej Pevec Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea Acta Chimica Slovenica cu(ii) complex cu(i) complex oxidative cyclization crystal structure thiourea |
| title | Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea |
| title_full | Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea |
| title_fullStr | Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea |
| title_full_unstemmed | Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea |
| title_short | Four Different Crystalline Products from One Reaction: Unexpected Diversity of Products of the CuCl2 Reaction with N-(2-Pyridyl)thiourea |
| title_sort | four different crystalline products from one reaction unexpected diversity of products of the cucl2 reaction with n 2 pyridyl thiourea |
| topic | cu(ii) complex cu(i) complex oxidative cyclization crystal structure thiourea |
| url | https://journals.matheo.si/index.php/ACSi/article/view/6252 |
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