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Dimerization and Coordination Properties of Zinc(II)tetra-4-alkoxybenzoyloxiphthalocyanine in Relation to DABCO in o-Xylene and Chloroform

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Abstract

For the first time the interactions between zinc(II)tetra-4-alkoxybenzoyloxiphthalocyanine (Zn(4—O—CO—C6H4—OC11H23)Pc) and 1,4-diazabicyclo[2.2.2]octane (DABCO) in o-xylene and chloroform have been studied by calorimetric titration and NMR and electron absorption spectroscopic methods. It has been found that in o-xylene at concentrations of Zn(4—O—CO—C6H4—OC11H23)Pc higher than 6×10−4 mol⋅L−1 π–π dimers species are formed (λ max= 685 nm). Additions of DABCO to the solution up to mole ratio 1 : 8 (Zn(4—O—CO—C6H4—OC11H23)Pc : DABCO) lead to a shift of the aggregation equilibrium towards monomer species due to formation of monoligand axial complexes. Further increasing the DABCO concentration results in formation of Zn(4—O—CO—C6H4—OC11H23)Pc—DABCO—Zn(4—O—CO—C6H4—OC11H23)Pc sandwich dimers (λ max= 675 nm).

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Authors and Affiliations

  1. Institute of Solution Chemistry of RAS, 1 Akademicheskaya str., Ivanovo, 153045, Russia

    N. Sh. Lebedeva, R. S. Kumeev, G. A. Al’per, E. V. Parfenyuk & A. S. Vashurin

  2. Ivanovo State University of Chemistry and Technology, F. Engels str., Ivanovo, 153460, Russia

    A. S. Vashurin & T. V. Tararykina

Authors
  1. N. Sh. Lebedeva
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  2. R. S. Kumeev
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  3. G. A. Al’per
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  4. E. V. Parfenyuk
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  5. A. S. Vashurin
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  6. T. V. Tararykina
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Correspondence to N. Sh. Lebedeva.

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Lebedeva, N.S., Kumeev, R.S., Al’per, G.A. et al. Dimerization and Coordination Properties of Zinc(II)tetra-4-alkoxybenzoyloxiphthalocyanine in Relation to DABCO in o-Xylene and Chloroform. J Solution Chem 36, 793–801 (2007). https://doi.org/10.1007/s10953-007-9148-z

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  • DOI: https://doi.org/10.1007/s10953-007-9148-z

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