Thermally initiated disproportionation of manganese(II) bis(1-hydroxyethylidene)diphosphonate. Formation and properties of the lepidoid structure of manganese(II) (1-hydroxyethylidene)diphosphonate-2-hydroxyethaneaminium whiskers. Agronomical efficiency of the manganese(II) complex with (1-hydroxyethylidene)diphosphonic acid

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Russian Chemical Bulletin

DOI:https://doi.org/10.1007/S11172-018-2079-6· OSTI ID:22863386

Zolotareva, N. V.; Petrov, B. I.; Novikova, O. V.; Kulikova, T. I. ^[1]; Razov, E. N. ^[2]; Kruglov, A. V.; Kotomina, V. E. ^[3]; Geiger, E. Yu.; Varlamova, L. D.; Titova, V. I. ^[4]; Korchenkina, N. A.; Sakov, A. P. ^[5]

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1. Russian Academy of Sciences, G. A. Razuvaev Institute of Organometallic Chemistry (Russian Federation)
2. N. I. Lobachevsky Nizhny Novgorod State University (Russian Federation)
3. N. I. Lobachevsky Nizhny Novgorod State University, Physical-Technical Research Institute (Russian Federation)
4. Nizhny Novgorod State Agricultural Academy (Russian Federation)
5. Nizhny Novgorod Agricultural Research Institute (Russian Federation)

The reaction of poorly soluble manganese(II) bis(1-hydroxyethylidene)diphosphonate tetrahydrate (Mn(H{sub 3}L){sub 2}•4H{sub 2}O) with 2-aminoethanol (H{sub 2}NCH{sub 2}CH{sub 2}OH) in an aqueous medium on heating to 70—80 оС causes the initial formation of soluble manganese(II) bis(1-hydroxyethylidene)diphosphonate tris(1-hydroxyethaneaminium) (Mn(H{sub 3}L)2• •3H{sub 2}NCH{sub 2}CH{sub 2}OH•4H{sub 2}O), which then disproportionates to slightly soluble manganese(II) (1-hydroxyethylidene)diphosphonate-2-hydroxyethaneaminium (MnH{sub 2}L•H{sub 2}NCH{sub 2}CH{sub 2}OH) and coordination polymer of 1-hydroxyethylidenediphosphonic acid with 2-aminoethanol containing no metal cations. In the course of the reaction, MnH{sub 2}L•H{sub 2}NCH{sub 2}CH{sub 2}OH precipitates as whiskers that are grouped into a leaf (lepidoid) structure. The latter was examined by IR spectroscopy, X-ray phase analysis, scanning electron microscopy, atomic force microscopy, optical microscopy, and thermal desorption of nitrogen. The starting and resulting manganese compounds refer to poorly soluble crystalline complexes. The presence of a 2-aminoethanol molecule in the final product leads to an increase in the solubility from 0.40 to 0.54 g in 100 mL of the solution. Poorly soluble MnH{sub 2}L•H{sub 2}NCH{sub 2}CH{sub 2}OH is easily converted to a soluble form by the treatment with 2-aminoethanol or 2-amino-2-(hydroxy- methyl)propane-1,3-diol (H{sub 2}NC(CH{sub 2}OH)3). The agronomical efficiency of a solution of the Mn(H{sub 3}L){sub 2}•3H{sub 2}NCH{sub 2}CH{sub 2}OH•4H{sub 2}O complex was studied on the cultures of white lupine Degas, spring wheat Ester, spring rape, and pea Stabil.

• OSTI ID: 22863386
• Journal Information: Russian Chemical Bulletin, Journal Name: Russian Chemical Bulletin Journal Issue: 2 Vol. 67; ISSN RCBUEY; ISSN 1066-5285
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ATOMIC FORCE MICROSCOPY
CATIONS
INFRARED SPECTRA
MANGANESE
MANGANESE COMPOUNDS
MOLECULES
NITROGEN
OPTICAL MICROSCOPY
OXIDATION
PHASE STUDIES
PHOSPHONATES
POLYMERS
PRECIPITATION
PROPANE
SCANNING ELECTRON MICROSCOPY
SOLUBILITY
X RADIATION