Russian Journal of General Chemistry

, Volume 87, Issue 1, pp 92–97 | Cite as

Water-soluble cobalt complexes with 1-hydroxyethylydenediphosphonic acid and 2-aminoethanol

  • V. V. Semenov
  • N. V. Zolotareva
  • N. M. Lazarev
  • B. I. Petrov
  • L. D. Varlamova
  • E. Yu. Geiger
  • V. I. Titova
  • E. N. Razov
Article
  • 28 Downloads

Abstract

The reaction of an aqueous suspension of basic cobalt carbonate CoCO3·4Co(OH)2·3H2O with equimolar amount or two-fold excess of 1-hydroxyethylydenediphosphonic acid (H4L) has yielded crystalline CoH2L and amorphous Co(H3L)2 products, respectively. The interaction of poorly soluble CoH2L complex with 2-aminoethanol has resulted in the formation of amorphous water-soluble CoH2L·H2NCH2CH2OH·6Н2О complex; the latter loses 5 water molecules at heating and is converted into CoH2L·H2NCH2CH2OH·Н2О. The study of agrochemical effects of Co(H3L)2 and CoH2L·H2NCH2CH2OH·6Н2О has revealed their advantage over the conventional salt form (cobalt sulfate) reflected in the reduced phytotoxicity of the element. The prepared compound containing 2-aminoethanol (solubility promotor) has revealed better performance.

Keywords

1-hydroxyethylydenediphosphonic acid cobalt monoethanolamine microfertilizer agricultural efficiency 

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. V. Semenov
    • 1
  • N. V. Zolotareva
    • 1
  • N. M. Lazarev
    • 1
  • B. I. Petrov
    • 1
  • L. D. Varlamova
    • 2
  • E. Yu. Geiger
    • 2
  • V. I. Titova
    • 2
  • E. N. Razov
    • 3
    • 4
  1. 1.Razuvaev Institute of Organometallic ChemistryRussian Academy of SciencesNizhny NovgorodRussia
  2. 2.Nizhny Novgorod State Agricultural AcademyNizhny NovgorodRussia
  3. 3.Lobachevskii Nizhny Novgorod State UniversityNizhny NovgorodRussia
  4. 4.Institute of Mechanical Engineering ProblemsRussian Academy of SciencesNizhny NovgorodRussia

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