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Perepichka IF, Kuz'mina LG, Perepichka DF, Bryce MR, Goldenberg LM, Popov AF, Howard JAK. Electron Acceptors of the Fluorene Series. 7.1 2,7-Dicyano-4,5-dinitro-9-X-fluorenes: Synthesis, Cyclic Voltammetry, Charge Transfer Complexation with N-Propylcarbazole in Solution, and X-ray Crystal Structures of Two Tetrathiafulvalene Complexes. J Org Chem 1998. [DOI: 10.1021/jo9803481] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Igor F. Perepichka
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Lyudmila G. Kuz'mina
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Dmitrii F. Perepichka
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Martin R. Bryce
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Leonid M. Goldenberg
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Anatolii F. Popov
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
| | - Judith A. K. Howard
- L.M.Litvinenko Institute of Physical Organic & Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine, Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Moscow 117907, GSP-1, Russian Federation, Department of Chemistry, University of Durham, Durham DH1 3LE, U.K., and School of Engineering, University of Durham, Durham DH1 3LE, U.K
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Walash MI, Rizk M, el-Brashy A. Colorimetric determination of thioxanthenes with tetracyanoethylene. PHARMACEUTISCH WEEKBLAD. SCIENTIFIC EDITION 1986; 8:234-8. [PMID: 3763368 DOI: 10.1007/bf01957784] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple and rapid colorimetric method for the quantitative determination of the thioxanthene derivatives, chlorprothixene, tiotixene and metixene has been performed either in their pure form or in tablets. The procedure is based upon the formation of charge transfer complexes with the pi-acceptor tetracyanoethylene. The spectra of the complex show maxima at 415, 410 and 390 nm with a high apparent molar absorptivity which facilitates the determination of 5-100 micrograms X ml-1 of the studied compounds. The mean recoveries are 100.1 +/- 1.4%, 99.8 +/- 0.8% and 100.2 +/- 1.1% for chlorprothixene, tiotixene and metixene, respectively. This procedure is applied to determine these drugs in certain formulations and the results compare favourably to compendial methods.
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