Ваш браузер устарел.

Для того, чтобы использовать все возможности сайта, загрузите и установите один из этих браузеров.

скрыть

Article

  • Title

    Research of composition and structure of complex Cd(II) tetrafluoroborates with phenylenediamines

  • Authors

    Shestakova Maryna V.
    Chebotarev Olexandr M.

  • Subject

    CHEMISTRY. CHEMICAL ENGINEERING

  • Year 2016
    Issue 1(48)
    UDC 546.273’16
    DOI 10.15276/opu.1.48.2016.17
    Pages 104-108
  • Abstract

    Borofluoric acid and its various products, for example complex metals tetrafluoroborates, become widely used in electrochemical processes at refinement of metals, when receiving soldering fluxes. An interesting feature of tetrafluoroborate complexes of metals with organic ligands is that in these compounds the BF4- group has various nature of bond. Aim: The aim of this work is to confirm the established earlier dependence between basicity of organic ligand and structure of the coordination sphere of tetrafluoroborate complex. Materials and Methods: By preparative way the complex tetrafluoroborates Cd(II) with isomeric o-, m-, p-phenylenediamine (PD) are synthesized. The composition and the structure of the synthesized complex compounds are defined by series of physical and chemical methods of research. According to results of elemental, titrimetric and nuclear-absorbing analyses and without dependency on way of synthesis for m- and p-isomers the [Cd(PD)4](BF4)2 bindings are implemented. In case of OPD use at synthesis without solvent the [Cd(OPD)2](BF4)2 complex has been received. Results: Measurements results of solutions molar conductivity of bonds in dimethyl formamide demonstrate that complexes are the three-ionic electrolytes of the general structure of [Cd(PD)4](BF4)2, and in case of OPD use – the [Cd(OPD)2](BF4)2. Coordination centers of organic ligands and outer-sphere nature of tetrafluoroborate ion bond are defined by spectroscopy IR. Influence of provision of amino groups in diamine molecule on composition and structure of complexes is noted. Conclusions: The established structure of the coordination sphere of the Cd(II) tetrafluoroborate complexes with isomeric phenylenediamines allows to draw conclusion about their tetrahedral configuration as such structure of coordination node is characteristic for this metal as complexing agent with 4 as coordination number.

  • Keywords

    complex tetrafluoroborates, phenylenediamine, coordination, tetrafluoroborate ion

  • Viewed: 854 Dowloaded: 9
  • Download Article
  • References

    Література
    1.    Пайка алюминия и разнородных материалов флюсами с комплексными тетрафтороборатами / В.Ф. Хорунов, О.М. Сабадаш, А.Н. Чеботарев, М.В. Шестакова // Тр. 1-й Междунар. науч.-практ. конф. «Защита окружающей среды, здоровье, безопасность в сварочном производстве», 11–13 сент. 2002, Одесса. — О.: Астропринт, 2002. — C. 665—670.
    2.    The structure of Cu(en)2(BF4)2 and an infrared spectral criterion for “semi-co-ordinated” polyanions / D.S. Brown, J.D. Lee, B.G.A. Melsom, et al. // Chemical Communications (London). — 1967. — Issue 8. — PP. 369—371.
    3.    Coordination behavior of 2-aminobenzophenone toward the copper(II) ion in the presence of low-coordinating coligands / I.M. Vezzosi, F.A. Zanoli, L.P. Battaglia, A.B. Corradi // Inorganica Chimica Acta. — 1985. — Vol. 105, Issue 1. — PP. 13—17.
    4.    Chebotarev, A.N. On the problem of the tetrafluoroborate ion state in complexes with nitrogen-containing organic bases / A.N. Chebotarev, M.V. Shestakova, T.M. Shcherbakova // Russian Journal of Coordination Chemistry. — 2002. — Vol. 28, Issue 2. — PP. 131—134.
    5.    Чеботарев, А.Н. Комплексные тетрафторбораты меди(II) и цинка(II) азотсодержащих органических оснований / А.Н. Чеботарев, М.В. Шестакова, Т.М. Щербакова // Журнал неорганической химии. — 1993. — Т. 38, № 2. — С. 272—275.
    6.    Чеботарев, А.Н. Комплексные тетрафторобораты кобальта(II) с азотсодержащими органическими основаниями / А.Н. Чеботарёв, М.В. Шестакова // Украинский химический журнал. — 2007. — T. 73, № 3-4. — C. 25—29.
    7.    Атомно-абсорбцiйне вивчення складу комплексних тетрафторборатiв металів з азотовмісними органічними основами / О.М. Захарiя, О.М. Чеботарьов, М.В. Шестакова, Т.М. Щербакова // Вісник Одеського національного університету. — 2000. — Т. 5, № 2. — С. 15—20.

    References
    1.    Khorunov, V.F., Sabadash, O.M., Chebotarev, A.N., & Shestakova, M.V. (2002). Soldering of aluminium and heterogeneous materials using fluxes containing tetrafluorborate complexes. In A.A. Ennan (Ed.), Proceedings of the 1st International Scientific and Practical Conference “Environmental Protection, Health, and Safety in Welding” (pp. 665-670). Odessa: Astroprint.
    2.    Brown, D.S., Lee, J.D., Melsom, B.G.A., Hathaway, B.J., Procter, I.M., & Tomlinson, A.A.G. (1967). The structure of Cu(en)2(BF4)2 and an infrared spectral criterion for “semi-co-ordinated” polyanions. Chemical Communications (London), 8, 369—371. DOI:10.1039/C19670000369
    3.    Vezzosi, I.M., Zanoli, F.A., Battaglia, L.P., & Corradi, A.B. (1985). Coordination behavior of 2-aminobenzophenone toward the copper(II) ion in the presence of low-coordinating coligands. Inorganica Chimica Acta, 105(1), 13—17. DOI:10.1016/S0020-1693(00)85240-8
    4.    Chebotarev, A.N., Shestakova, M.V., & Shcherbakova, T.M. (2002). On the problem of the tetrafluoroborate ion state in complexes with nitrogen-containing organic bases. Russian Journal of Coordination Chemistry, 28(2), 131—134. DOI:10.1023/A:1014288219106
    5.    Chebotarev, A.N., Shestakova, M.V., & Scherbakova, T.M. (1993). Complex tetrafluoroborates of copper(II) and zinc(II) with nitrogen organic bases. Russian Journal of Inorganic Chemistry, 38(2), 272—275.
    6.    Chebotarev, A.N., & Shestakova, M.V. (2007). Tetrafluoroborate complexes cobalt(II) with nitrogen organic bases. Ukrainian Chemistry Journal, 73(3-4), 25—29.
    7.    Zachariya, A.N., Chebotaryov, A.N., Shestakova, M.V., & Scherbakova, T.M. (2000). Atomic absorbtion spectroscopy determination of the stiochiometry of metal complex tetrafluoroborates with nitrogen organic bases. Odesa National University Herald, 5(2), 15—20.

  • Creative Commons License by Author(s)