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Dergiler / Turkish Journal of Chemistry / 2005 / Cilt: 29 - Sayı: 6

Spectrophotometric study of the interaction between aza-15-crown-5 and some $pi$-acceptors in chloroform solution

Ali Reza FIROOZ
Abolfazl SEMNANI
Mohammd Hossein KESHAVARZ
Hamid Reza POURETEDAL
Sayfa
647–658
Yayın Tarihi
2022-11-05
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Finally, all of the resulting complexes were isolated in crystalline form and the effect of complex formation on IR spectra is discussed.

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Amaç & Hipotez:A spectrophotometric study concerning the interaction between A15C5 as n-donor and TCNE, DDQ, TCNQ and bromanil as $pi$-acceptor was been performed in chloroform at 25 °C.
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Temel Bulgular & Veri:The results of TCNE indicate the formation of a 1:1 charge-transfer complex through a nonequilibrium reaction.
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Sonuç & Katkı:Finally, all of the resulting complexes were isolated in crystalline form and the effect of complex formation on IR spectra is discussed.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

A spectrophotometric study concerning the interaction between A15C5 as n-donor and TCNE, DDQ, TCNQ and bromanil as $pi$-acceptor was been performed in chloroform at 25 °C. The results of TCNE indicate the formation of a 1:1 charge-transfer complex through a nonequilibrium reaction. In the case of DDQ, the formation of 1:2 (A15C5/DDQ) and 1:1 charge-transfer complexes through equilibrium and nonequilibrium reactions is confirmed. The formation constant of the equilibrium step was evaluated from the computer fitting of the absorbance-mole ratio data as log$K_f$= 5.14 ± 0.09. The $[A15C5^+(DDQ)_2^-]$ and $[A15C5^+DDQ^-]$ are suggested as the possible 1:2 and 1:1 adducts, respectively. The results of TCNQ are indicative of the gradual formation of two 1:1 equilibrium products. The $[A15C5^+TCNQ^-]$ and 7-A15C5-7,8,8-tricyanoquinodimethane are assigned to these adducts and the rate constant and sum of their formation constants are measured. In the case of bromanil, the conversion to a charge-transfer complex through a nonequilibrium reaction is observed. The rate constant of this reaction was determined. Finally, all of the resulting complexes were isolated in crystalline form and the effect of complex formation on IR spectra is discussed.

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Bu Makaleye Atıf Yap

FIROOZ, A. R., SEMNANI, A., KESHAVARZ, M. H., POURETEDAL, H. R. (2022). Spectrophotometric study of the interaction between aza-15-crown-5 and some $pi$-acceptors in chloroform solution. Turkish Journal of Chemistry, Cilt: 29 - Sayı: 6, 647–658. https://ajindex.com/articles/602223

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Kaynakça (2)

  1. C.J. Pedersen, J. Am. Chem. Soc. 89, 2945 (1967). 2.D.J. Cram and J.M. Cram, Ace. Chem. Res. 11, 8 (1978). 3.K. Morakum, Ace. Chem. Res. 10, 294 (1977). 4.A. Semnani and M. Shamsipur, J. Chem. Soc., Dalton Trans. 2215 (1996). 5.A. Semnani and M. Shamsipur, Spectrochim Acta 49, 411 (1993). 6.R.M. Izatt, J.S. Bradshaw, K. Pawlak, R.L. Bruening and B.J. Tarbet, Chem. Rev. 92, 1261 (1992). 7.R. Mailini and V. Krishnan, J. Phys. Chem. 84, 551 (1980). 8.R. Mailini and V. Krishnan, Spectrochim. Acta 40A, 323 (1984). 9.Y. Jayathirtha and V. Krishnan, Natl.& Acad. Sci. Lett. (India), 1, 365 (1978). 10.J. Zolgharnein and M. Shamsipur, Polish J. Chem. 72, 2486 (1998). 11.S. Sadeghi, N. Alizadeh and M. Shamsipur, J. Incl. Phenomn. 34, 431 (1999). 12.M. Shamsipur, Z. Talebpour and N. Alizadeh, J. Solution Chem. 32, 227 (2003). 13.R.M. Izatt, J.S. Bradshaw, S.A. Nielson, J.J. Lamb, J.S. Christensen and D. Sen, Chem. Rev. 85, 271 (1985). 14.R.M. Izatt, K. Pawlak, J.S. Bradshaw and R.L. Bruening, Chem. Rev. 91, 1721 (1991). 15.H.R. Pouretedal, A. Semnani, B. Nazari and A. Firooz, Asian J. of Chem. 17, 329 (2005). 16.H.R. Pouretedal, A. Semnani, B. Nazari and A. Firooz, Asian J. of Chem. 17, 2159 (2005). 17.A. Semnani, B. Shareghi and M.R. Sovizi, Iranian J. of Chem. & Chem. Eng. 19, 67 (2000). 18.A. Semnani, H.R. Pouretedal and B. Shareghi, Iranian J. of Chem. & Chem. Eng. 23, 1 (2004). 19.A. Semnani, H.R. Pouretedal, B. Nazari and A. Firooz, Iranian J. of Chem. & Chem. Eng. 23, 27 (2004). 20.A. Semnani, H.R. Pouretedal, B. Nazari and A. Firooz, Scientia Iranica 10, 1 (2003). 21.M. Shamsipur and H.R. Pouretedal, J. Chin. Chem. Soc. 51, 1 (2004). 22.A. Semnani and M. Shamsipur, J. Incl. Phenomn. 22, 99 (1995). 23.L.J. Andrews and R.M. Keefer, "Molecular Complexes in Organic Chemistry", Holden Day, New York(1964). 24.M.T. Beck and I. Nagypal, "Chemistry of Complex Equilibria", John Wiley & Sons (1990). 25.D.A. Skoog, D.W. West and J. Holler, "Fundamental of Analytical Chemistry", Saunders College Publishing (1998). 26.J.B. Arteburn, Tetrahedron 57, 9765 (2001). 27.T. Satoh, A. Nakamura and A. Iriuchijm, Tetrahedron, 57, 9689 (2001). 28.G. Bringmann and S. Tasler, Tetrahedron 57, 31 (2001). 29.S. Ma, X.D. Zhang and L.L. Shen, J. of Photochem. Photobiol. 139, 97 (2001). 30.R. Foster, "Organic Charge-Transfer Complexes", Academic Press,
  2. London and New York (1969). 31.G.D. Christian and J.E. O'Reilly, "Instrumental Analysis", Allyn and Bacon (1986). 32.V.A. Nicely and J.L. Dy