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Water insoluble calcium hydroxide Ca(OH)2 or calcium carbonate CaCO3 react with aqueous solution of (1-hydroxyethylidene)diphosphonic acid and nitrilotrimethylenephosphonic acid to form poorly soluble calcium (1-hydroxyethylidene)diphosphonate trihydrate and calcium nitrilotrimethylenephosphonate trihydrate, respectively. The reaction of calcium chloride CaCl2 with the disodium salt of ethylenediaminetetraacetic acid afforded poorly soluble calcium ethylenediaminetetraacetate hexahydrate. The reaction of suspensions of complexes of (1-hydroxyethylidene)calcium diphosphonate trihydrate, calcium ethylenediaminetetetraacetate hexahydrate and calcium nitrilotrimethylenephosphonate trihydrate with 2-aminoethanol led to the formation of water-soluble (1-hydroxyethylidene)bis(2-aminoethanol)calcium diphosphonate, tris(2-aminoethanol)calcium nitrilotrimethylenephosphonate, and bis(2-aminoethanol)calcium ethylenediaminetetraacetate, respectively. The molecular structure of calcium ethylenediaminetetraacetate hexahydrate was characterized by single-crystal X-ray diffraction method. [ABSTRACT FROM AUTHOR]

Poorly soluble zinc ethylenediaminetetraacetate zincate Zn[ZnL] reacts with sodium Na4L, potassium K4L, ammonium (NH4)4L, 2-ammonioethanol (H3NCH2CH2OH)4L, and hexamethylene-1,6-diammonium {H3N(CH2)6NH3}2L salts of ethylenediaminetetraacetic acid H4L to give readily soluble sodium Na2[ZnL], potassium K2[ZnL], ammonium (NH4)2[ZnL], 2-ammonioethanol (H3NCH2CH2OH)2[ZnL], and hexamethylene-1,6-diammonium {H3N(CH2)6NH3}[ZnL] ethylenediaminetetraacetate zincates. The reaction of tetrakis(triethylammonium) salt {(C2H5)3NH}4L with Zn[ZnL] does not give the expected bis(triethylammonium) ethylenediaminetetraacetate zincate {(C2H5)3NH}2[ZnL], but gives instead mono(triethylammonium) ethylenediaminetetraacetate zincate, {(C2H5)3NH}H[ZnL]; in aqueous solution, this product generates poorly soluble zinc ethylenediaminetetraacetate H2[ZnL(H2O)]·2H2O, which was studied by X-ray diffraction (CCDC no. 2172274). [ABSTRACT FROM AUTHOR]

Tetrabasic ethylenediaminetetraacetic acid H4L binds two molecules of monobasic amines to give the corresponding salts: ethylenediaminetetraacetates of bis(monoethanolaminium) H2L2–⋅2+H3NCH2CH2ОН, tris(hydroxymethyl)methylaminium H2L2–⋅2+H3NС(CH2ОН)3⋅3H2О, diethylaminium H2L2–⋅2+H2N(C2H5)2⋅H2О, tert-butylaminium H2L2–⋅2+H3NС(CH3)3⋅5H2О, and triethanolaminium H2L2–⋅2+HN(CH2CH2ОH)3. Dibasic hexamethylene-1,6-diamine, triethylenediamine, and tetramethylethylenediamine form the following 1 : 1 adducts: H2L2–⋅+NH3(CH2)6NH , H2L2–⋅+NH3CH2CH2(OCH2CH2)2NH , H2L2–⋅ +HN(CH2CH2)3NH+⋅H2О, and H2L2–⋅+H(CH3)2NCH2CH2N(CH3)2H+. The molecular structures of bis(monoethanolaminium) ethylenediaminetetraacetate and bis[tris(hydroxymethyl)methylaminium] ethylenediaminetetraacetate trihydrate were determined. [ABSTRACT FROM AUTHOR]

A preparation of basic manganese carbonate containing manganite MnO(OH), rhodochrosite MnCO3, and bixbyite Mn2O3 reacts with nitrilotriacetic acid to give low-solubility manganese compound Mn[N(CH2COO)2(CH2COOH)] · 2H2O (manganese nitriloacetate dihydrate) in the form of whisker microcrystals. An alternative method for the preparation of the compound is the reaction of manganese(ii) sulfate with nitrilotriacetic acid disodium salt. This compound can be converted into a water-soluble form by the treatment with organic amines as solubility promoters. The effect of the manganese-containing compounds on the biometric parameters of seedlings of the Zlata spring wheat was studied. [ABSTRACT FROM AUTHOR]

A suspension of sparingly soluble zinc (1-hydroxyethylidene)diphosphonate ZnH2L•2H2O (H4L = MeC(OH)[P(O)(OH)2]2) is rapidly transformed into an aqueous solution when treated with ammonia or aliphatic amines (hexamethylenediamine, triethylamine, tert-butylamine, di-n-butylamine) containing no hydrophilic groups −OH and −(OCH2CH2)n−. The dissolution effect is due to the decomposition of the coordination polymer giving ammonium derivatives. Dehydrated dry powders of the corresponding ammonium compounds based on triethylamine, tert-butylamine, or di-n-butylamine rapidly dissolve in water to form transparent colorless solutions, whereas hexamethylenediamine and ammonia derivatives are poorly soluble. (1-Hydroxyethylidene)diphosphonic acid forms ammonium salts with hexamethylenediamine, triethylamine, and tert-butylamine. The molecular structures of these compounds are considered. [ABSTRACT FROM AUTHOR]

Reactions of nitrilotriacetic acid with 2-aminoethanol, 2-amino-2-(hydroxymethyl)propane-1,3-diol, and 2,2'-(ethylenedioxy)bis(ethylamine) afford the following salts in high yields: 2-ammonioethanol nitrilotriacetate [HN+(CH2COO–)2(CH2COOH) ⋅ H3N+CH2CH2OH]n, bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate HN+(CH2COO–)3 ⋅ 2H3N+C(CH2 OH)3, and 2,2'-(ethylenedioxy)bis(ethylammonium) nitrilotriacetate HN+(CH2COO–)3 ⋅ H3N+CH2CH2OCH2CH2OCH2CH2N+H3. The molecular structures of 2-ammonioethanol nitrilotriacetate and bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate were determined. Nitrilotriacetic acid molecules in 2-ammonioethanol nitrilotriacetate are linked by O⋅⋅⋅H⋅⋅⋅O hydrogen bonds involving acid groups of adjacent molecules to form a polymer chain. On the contrary, nitrilotriacetic acid molecules in bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate do not form polymer chains. In the crystals of both compounds, adjacent molecules are linked by numerous O⋅⋅⋅H interactions to form infinite 3D frameworks. [ABSTRACT FROM AUTHOR]

Nitrilotris(methylenephosphonic)acid N[CH2P(O)(OH)2]3 (H6L) reacts with zinc oxide in an aqueous medium to give a poorly soluble polymeric crystalline salt (ZnH4L)n. The reaction proceeds through the intermediate formation of a soluble monomer complex ZnH4L. The water-soluble amorphous forms of the coordination compound used as microfertilizers were obtained by treatment of a suspension of this salt with 2-aminoethanol, 2-amino-2-(hydroxymethyl)propane-1,3-diol, 2,2′-(ethylenedioxy)bis(ethylamine). p-Aminobenzoic acid H2NC6H4COOH reacts in an aqueous solution with hexabasic nitrilotrimethylenephosphonic acid, as well as with the monomeric complex ZnH4L, giving crystals of bis(4-carboxyphenylaminium) nitrilotris(methylenephosphonate) dihydrate H4L2− · 2(H3N-C6H4-COOH)+ · 2H2O. The compounds were investigated by elemental analysis, IR and UV spectroscopy, X-ray phase analysis and X-ray diffraction analysis. Tests of the water-soluble complex with 2-aminoethanol ZnHL3− · 3(H3NCH2CH2OH)+ · 2H2O in the laboratory experiment with seeds of two agricultural crops showed a positive agronomic effect. [ABSTRACT FROM AUTHOR]

Temperature dependences of the saturated vapor pressure of lanthanum complexes based on 2-(2-benzoxazol-2-yl)phenolate ligand have been obtained using the Knudsen effusion method. The thermodynamic parameters of vaporization have been calculated from the p−T data. Mass spectra and differential scanning calorimetry data have been obtained. [ABSTRACT FROM AUTHOR]

Abstract: A new complex of hexaammonium bis(1-oxyethylidenediphosphonate)dioxomolybdenum tetrahydrate (NH4)6[MoO2(L)2] · 4H2O (I) (H4L is H2O3P-C(OH)(CH3)-PO3H2) is synthesized. Its molecular structure consisting of the complex anion [MoO2L2]6-, six out-of-sphere ammonium cations , and four water molecules is determined by X-ray diffraction analysis (CIF file CCDC no. 813517). The solubility of complex I is studied. The changes in the IR absorption spectra upon complex formation are discussed. [ABSTRACT FROM AUTHOR]