Organic Amino Acids Chelates; Preparation, Spectroscopic Characterization and Applications as Foliar Fertilizers

Cu(II) complexes of amino acid hydrolyzate soya protein isolate have been prepared. In order to study the mode of coordination in the above chelates and their effect as foliar fertilizer, Mn(II), Co(II), Nil(II), Cu(II), Zn(II) and Cd(II) complexes of  L-mino acids have been prepared and characterized by elemental and spectral analyses,( IR, UV-VIS, mass spectra and ESR), electrical conductance, magnetic moments and thermal analyses (DTA and TGA). ESR spectra of copper (II) complexes show isotropic and anisotropic types d(x2-y2) with covalent bond character. The amino acids chelates were evaluated as foliar fertilizer by treating plants with micronutrient, amino acid solutions and varying concentrations of micronutrient amino acids chelats. It was found that spraying plant with 2.5% micronutrient amino acids chelats gives the best results regarding: plant height, stem diameter, leaves area, number of flowers, number of branches per plants and total yield per plant

Removal of Heavy Metals and Salmonella Pathogens from Sewage Sludge Using a Novel Chelating Agent and Its Reuse as a Fertilizer

The direct use of sewage as fertilizers in agriculture without proper treatment has led to substantial economic environmental and healthy ramifications. Proper treatment as well as adequate environmental management of sewage sludge is a necessity in order to eliminate the negative sequences of its utilization in the agriculture field. In this chapter, a novel organic Schiff base chelator derived from hydroxybenzylidene succinohydrazide (HBSH) has been successfully synthesized and characterized by elemental analysis, 1H-NMR as well as infrared spectroscopy. The effect of sewage treated with varying concentration of the Schiff base chelator (0.8, 1.6 and 2.4 g/L) as well as the untreated sewage on the sludge solid reduction, removal of heavy metals and salmonella pathogens has been investigated. The implementation of raw as well as treated sludge on the growth as well as the heavy metal content of radish plant has been also investigated. It was observed that the treated sample showed a reduction in the total content of Zn, Ni, Cr and Cu and enhancements in the yield, stem length, leaf number and flourishing

(E,E)-1,2-Bis(2,4,6-trimeth­oxy­benzyl­idene)hydrazine

The title mol­ecule, C20H24N2O6, lies on an inversion centre. All non-H atoms are essentially coplanar, with an r.m.s. deviation of 0.0415 (1) Å and a maximum deviation of 0.1476 (1) Å for the meth­oxy C atom at the 4-position of the benzene ring. The crystal structure is stabilized by weak C—H⋯N and C—H⋯π inter­actions

(E)-N′-(4-Hydroxy­benzyl­idene)-2-methoxy­benzohydrazide

The title compound, C15H14N2O3, exists in the E configuration with respect to the central methyl­idene unit. The dihedral angle between the two substituted benzene rings is 22.0 (2)°. Within the mol­ecule there is an intra­molecular N—H⋯O hydrogen bond involving the hydro­zide H atom and the O atom of the meth­oxy substituent on the adjacent phenyl ring. In the crystal structure, mol­ecules are linked through inter­molecular O—H⋯O hydrogen bonds, forming zigzag chains along the b direction

(E)-1-(2,4-Dinitro­phen­yl)-2-[1-(thio­phen-2-yl)ethyl­idene]hydrazine

The mol­ecule of the title compound, C12H10N4O4S, is slightly twisted, with a dihedral angle of 8.23 (9)° between the benzene and thio­phene rings. One nitro group is co-planar [O—N—C—C torsion angles = −0.5 (3) and −1.9 (3)°] whereas the other is slightly twisted with respect to the benzene ring [O—N—C—C torsion angles = −5.1 (3) and −5.7 (3)°]. In the crystal, the mol­ecules are linked by weak C—H⋯O inter­actions into screw chains along the b axis. The mol­ecular conformation is consolidated by an intra­molecular N—H⋯O hydrogen bond

(E)-N′-(2-Hydr­oxy-4-methoxy­benzyl­idene)isonicotinohydrazide monohydrate

The title compound, C14H13N3O3·H2O, was prepared by the reaction of 4-methoxy­salicylaldehyde and isonicotinohydrazide in ethanol. The Schiff base mol­ecule is not planar and has an E configuration with respect to the methyl­idene unit. The dihedral angle between the benzene and pyridine rings is 36.8 (2)°. In the mol­ecule there is an intra­molecular O—H⋯N hydrogen bond involving the hydroxyl substituent and the N atom of the 2-hydr­oxy-4-methoxy­benzyl­idene unit. In the crystal, the mol­ecules are linked through inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming layers parallel to the bc plane

N′-(5-Bromo-2-hydr­oxy-3-methoxy­benzyl­idene)isonicotinohydrazide

The title compound, C14H12BrN3O3, was prepared by reaction of 5-bromo-3-methoxy­salicylaldehyde and isonicotinohydrazide in methanol. The mol­ecule is not planar and adopts a trans configuration with respect to the C=N bond. There is an intra­molecular O—H⋯N hydrogen bond in the mol­ecule. The dihedral angle between the benzene and pyridine rings is 12.2 (2)°. In the crystal structure, mol­ecules are linked through inter­molecular N—H⋯N hydrogen bonds, forming chains running along the c-axis direction

(1E,1′E)-4,4′-[1,1′-(Hydrazine-1,2-diyl­idene)bis­(ethan-1-yl-1-yl­idene)]diphenol dihydrate

The asymmetric unit of the title compound, C16H16N2O2·2H2O, contains one half-mol­ecule of diphenol and one water mol­ecule. The complete diphenol mol­ecule is generated by a crystallographic inversion centre. In the mol­ecule, the central Cmeth­yl—C=N—N=C—Cmeth­yl plane makes a dihedral angle of 8.88 (6)° with its adjacent benzene ring. In the crystal, the components are linked by O—H⋯N and O—H⋯O hydrogen bonds into a three-dimensional network. The crystal structure is further stabilized by a weak C—H⋯π inter­action