Diphenyltin(IV) complexes of the 2-quinolinecarboxaldehyde Schiff bases of S-methyl- and S-benzyldithiocarbazate (Hqaldsme and Hqaldsbz): X-ray crystal structures of Hqaldsme and two conformers of its diphenyltin(IV) complex |
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| Affiliation: | 1. Department of Chemistry, Universiti Brunei Darussalam, Jalan Tungku Link, BE 1410, Negara Brunei Darussalam;2. Department of Chemistry, The University of Queensland, Brisbane, Qld 4072, Australia;1. Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India;2. Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia;1. Department of Chemical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia;2. Department of Chemistry, Faculty of Science, Central Tehran Branch, Islamic Azad University, Tehran, Iran;3. Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran;1. Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, India;2. Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana 131039, India;3. Department of Chemistry, Hansraj College, University of Delhi, Delhi 110007, India;4. Department of Chemistry, Kurukshetra University Kurukshetra, -136119, Haryana, India;1. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;2. Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia;1. Department of Chemistry, Raghunathpur College, Purulia 723133, India;2. Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Mohali 140 306, India;3. Department of Physics, Raghunathpur College, Purulia 723133, India |
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| Abstract: | New organometallic tin(IV) complexes of the empirical formula Sn(NNS)Ph2Cl (NNS = anionic forms of the 2-quinolinecarboxaldehyde Schiff bases of S-methyl- and S-benzyldithiocarbazate) have been prepared and characterized by IR, electronic, 1H NMR and ES mass spectroscopic techniques. The molecular structures of the 2-quinolinecarboxaldehyde Schiff base of S-methyldithiocarbazate (Hqaldsme) and its diphenyltin(IV) complex, Sn(qaldsme)Ph2Cl, have been determined by X-ray diffraction. In the solid state, the ligand remains as the thione tautomer in which the dithiocarbazate chain adopts an E,E configuration and is almost coplanar with the quinoline ring. The Sn(qaldsme)Ph2Cl complex crystallizes in two distinctly different conformationally isomeric forms, each having the same space group but different lattice parameters. X-ray analysis shows that in each polymorph, the tin atom adopts a distorted octahedral geometry with the Schiff base coordinated to it as a uninegatively charged tridentate chelating agent via the quinoline nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom. The two phenyl groups occupy axial positions and the chloride ligand occupies the sixth coordination position of the tin atom. The deprotonated ligand adopts an E,E,Z configuration in the complex. |
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