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Altowyan MS, Khalil SMSM, Al-Wahaib D, Barakat A, Soliman SM, Ali AE, Elbadawy HA. Synthesis of a Novel Unexpected Cu(II)–Thiazolidine Complex—X-ray Structure, Hirshfeld Surface Analysis, and Biological Studies. Molecules 2022; 27:molecules27144583. [PMID: 35889457 PMCID: PMC9319961 DOI: 10.3390/molecules27144583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/26/2022] Open
Abstract
An unexpected trinuclear Cu(II)–thiazolidine complex has been synthesized by mixing CuCl2·2H2O with the Schiff base ligand, 1-(((4,5-dihydrothiazol-2-yl)ethylidene)hydrazono)methyl)phenol L, in ethanol. Unexpectedly, the reaction proceeded via the hydrolysis of the Schiff base L, followed by cyclization to afford 3-methyl-5,6-dihydrothiazolo[3,2-c][1,2,3]triazole (La), then complexation with the Cu(II) salt, forming the trinuclear [Cu3(La)4(Cl)6] complex. The complex was characterized by means of FTIR spectra, elemental analysis, and X-ray crystallography. In the trinuclear [Cu3(La)4(Cl)6] complex, there are two crystallographically independent hexa- and penta-coordinated Cu(II) sites, where the thiazolidine ligand La units act as a monodentate ligand and a linker between the Cu(II) centers. The crystal packing of the [Cu3(La)4(Cl)6] complex is primarily affected by the weak non-covalent C-H∙∙∙Cl interactions. In accordance with Hirshfeld surface analysis, the Cl∙∙∙H, H∙∙∙H, S∙∙∙H, and N∙∙∙H percentages are 31.9%, 27.2%, 13.5%, and 9.9%, respectively. X-ray photoelectron spectroscopy confirmed the oxidation state of copper as Cu(II), as well as the presence of two different coordination environments around copper centers. The complex showed interesting antibacterial activity against the Gram-positive bacteria S. subtilis, with MIC = 9.7 µg/mL compared to MIC = 4.8 µg/mL for the control, gentamycin. Moreover, the Cu(II) complex showed an equal MIC (312.5 µg/mL) against C. albicans compared to ketoconazole. It also exhibits a very promising inhibitory activity against colon carcinoma (IC50 = 3.75 ± 0.43 µg/mL).
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Affiliation(s)
- Mezna Saleh Altowyan
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Samar M. S. M. Khalil
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; (S.M.S.M.K.); (S.M.S.)
| | - Dhuha Al-Wahaib
- Chemistry Department, Faculty of Science, Kuwait University, Kuwait City 13060, Kuwait;
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Saied M. Soliman
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; (S.M.S.M.K.); (S.M.S.)
| | - Ali Eldissouky Ali
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; (S.M.S.M.K.); (S.M.S.)
- Correspondence: (A.E.A.); (H.A.E.)
| | - Hemmat A. Elbadawy
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; (S.M.S.M.K.); (S.M.S.)
- Correspondence: (A.E.A.); (H.A.E.)
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Huang CC, Chen HG, Lo YH, Hsu LS, Lin CH. Chlorido[hydridotris(pyrazol-1-yl-κN)borato](1H-pyrazole-κN)(triphenyl-phosphine-κP)ruthenium(II). Acta Crystallogr Sect E Struct Rep Online 2010; 66:m795-6. [PMID: 21587719 PMCID: PMC3006890 DOI: 10.1107/s1600536810021525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2010] [Accepted: 06/06/2010] [Indexed: 11/12/2022]
Abstract
In the title compound, [Ru(C(9)H(10)BN(6))Cl(C(3)H(4)N(2))(C(18)H(15)P)], the Ru(II) atom is coordinated by an N,N',N''-tridentate hydrido-trispyrazolylborate (Tp) ligand, a pyrazole (HPz) mol-ecule, a chloride ion and a triphenyl-phosphine ligand, resulting in a distorted RuClPN(4) octa-hedral coordination for the metal ion: the tridentate N atoms occupy one octa-hedral face and the Cl and P atoms are cis. One of the phenyl rings is disordered over two orientations in a 0.547 (10):0.453 (10) ratio, and a weak intra-molecular N-H⋯Cl hydrogen bond generates an S(5) ring.
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Affiliation(s)
- Chiung-Cheng Huang
- Department of Chemical Engineering, Tatung University, Taipei 104, Taiwan
| | - Han-Gung Chen
- Department of Natural Science, Taipei Municipal University of Education, Taipei 10048, Taiwan
| | - Yih Hsing Lo
- Department of Natural Science, Taipei Municipal University of Education, Taipei 10048, Taiwan
| | - Li-Sheng Hsu
- Department of Natural Science, Taipei Municipal University of Education, Taipei 10048, Taiwan
| | - Chia-Her Lin
- Department of Chemistry, Chung-Yuan Christian University, Chung-Li 320, Taiwan
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