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  • Inorganic Chemistry  (7)
  • Added nitrogen interaction  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Biological interactions between soil nitrogen and alkaline-hydrolysing nitrogen fertilizers (1995)
    Springer
    Biology and fertility of soils 20 (1995), S. 41-48 
    Details
    ISSN: 1432-0789
    Keywords: Added nitrogen interaction ; Ammonia fixation ; 15N ; Immobilization ; Fertilizer-induced solubilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Added N interactions were measured in four soil incubated with 15N-labelled urea or diammonium phosphate. The use of biologically active, γ-irradiated, or reinoculated γ-irradiated samples allowed us to separate added N interactions due to chemical and biological processes, and to distinguish real interactions from apparent effects. Real biologically mediated added N interactions were observed in one soil for both fertilizer sources and in three soils amended with urea. These real interactions increased with the N fertilizer rate, but did not differ significantly between N sources. Fertilizer-induced unlabelled organic N in soil extracts declined during incubation in both sterile and non-sterile samples, but the temporal decline was higher in biologically active soil. Changes in fertilizer-induced unlabelled organic N in the extracts of three soils attributed to biological processes were similar to the measured real biologically mediated added N interactions. The results are consistent with the hypothesis that real biologically mediated added N interactions arise from the mineralization of soil organic N solubilized by alkaline-hydrolysing N fertilizers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307839
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  • 2
    Electronic Resource
    Electronic Resource
    Mineralization of soil organic nitrogen solubilized by aqua ammonia fertilizer (1996)
    Springer
    Biology and fertility of soils 23 (1996), S. 93-98 
    Details
    ISSN: 1432-0789
    Keywords: Added nitrogen interaction ; Alkaline-hydrolysing fertilizer ; Aqua ammonia ; Gross N immobilization ; Gross N mineralization ; 15N ; Soluble organic N availability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Organic N solubilized by NH3(aq) was extracted from 15N-labelled or unlabelled soil, concentrated and added to non-extracted soil, which was incubated under aerobic conditions at 27±1°C. Gross N mineralization, gross N immobilization, and nitrification in soils with or without addition of unlabelled soluble organic N were estimated by models based on the dilution of the NH 4 + or NO inf3 sup- pools, which were labelled with 15N at the beginning of incubation. Mineralization of labelled organic N was measured by the appearance of label in the mineral N pool. Although gross N mineralization and gross N immobilization were increased in two soils between day 0 and day 7 following addition of unlabelled organic N solubilized by NH3(aq), there was no increase in net N mineralization. Solubilization of 15N-labelled organic N increased and the 15N enrichment of the soluble organic N decereased as the concentration of NH3(aq) added increased. A constant proportion of approximately one-quarter of the labelled organic N added at different rates to non-extracted soil was recovered in the mineral N pool after an incubation period of 14 days, and the availability ratios calculated from net N mineralization data were 1.1:1 and 2.1:1 for 111 and 186 mg added organic-N kg-1 soil, respectively, indicating that the mineralization of organic N was increased by solubilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335824
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  • 3
    Electronic Resource
    Electronic Resource
    Chemical interactions between soil N and alkaline-hydrolysing N fertilizers (1993)
    Springer
    Nutrient cycling in agroecosystems 36 (1993), S. 239-248 
    Details
    ISSN: 1573-0867
    Keywords: Added nitrogen interaction ; alkaline hydrolysis ; ammonia fixation ; aqua ammonia ; di-ammonium phosphate ; fertilizer-induced deamination ; urea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Chemical interactions between soil N and alkaline-hydrolysing N fertilizers labelled with15N were studied in the laboratory using twelveγ-irradiated soils. Fertilizer was recovered in the soil organic N fraction via the process of NH3 fixation. NH3 fixation at day 7 varied from 1.8 to 4.6% of the N added as aqua ammonia at 1000 mg kg−1 soil. The amount of NH3 fixed increased with increasing rates of application of NH3(aq) and urea. The rate of NH3 fixation decreased with time, with more than 55% of the total NH3 fixation in 28 days occurring in the first week following application of 2000 mg urea-N kg−1 soil. Soil pH and NH3 fixation varied in response to N source, and increased in the order of di-ammonium phosphate 〈urea 〈 aqua ammonia at equivalent N concentrations. The alkaline hydrolysis of indigenous organic N occurred simultaneously with NH3 fixation, resulting in the release of unlabelled ammonium (deamination) and a real added nitrogen interaction in all but two of the soils studied. The release of NH 4 + initially increased up to a pH of 7.5, was inhibited between pH 8.5 and 9.0, but increased thereafter. The balance (Nbal) between NH3 fixation and deamination was either positive or negative, depending on the pH of the fertilized soil, which was directly related to N source and concentration for a given soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00748702
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  • 4
    Electronic Resource
    Electronic Resource
    Nitrosyl Rhenium Complexes: Thiocyanato Derivatives (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 526 (1985), S. 179-185 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Rhenium-Nitrosyl-Komplexe: Thiocyanato-DerivateSchmelzen von K2[Re(NO)Cl5] mit KSCN ergibt [Re(NO)(SCN)5]2-, das als freie Säure bzw. in Form der K+-, Na+-, NMe4+-, Pb2+-, Hg2+-, phenH+- und dipyH+-Salze isoliert werden kann. Eine Verbindung mit der Zusammensetzung Hg2[Re(NO)(SCN)7] wurde ebenfalls dargestellt. [Re(NO)Cl(SCN)4]2- wurde bei der Reaktion von H2[Re(NO)(SCN)5] mit HCl in wäßrigem Medium erhalten und als NMe4+-Salz isoliert. In wäßrigem Medium reagiert Re(NO)Cl3 mit KSCN unter Bildung von [Re(NO)Cl2(SCN)3]2-, das als phenH+- und dipyH+-Salz isoliert wurde. Die Komplexe wurden durch Elementaranalyse, spektroskopisch (UV-VIS, IR), magnetisch und durch Leitfähigkeitsmessungen charakterisiert. Strukturen für die Verbindungen werden vorgeschlagen.
    Notes: Fusion of K2[Re(NO)Cl5] with KSCN produces the ion [Re(NO)(SCN)5]2- which has been isolated as free acid and K+, Na+, NMe4+, Pb2+, Hg2+, phen H+ and dipyH+ salts. A salt of composition Hg2[Re(NO)(SCN)7] has also been prepared. The species [Re(NO)Cl(SCN)4]2- has been obtained from the reaction of H2[Re(NO)(SCN)5] with HCl in aqueous medium and its NMe4+ salt has been isolated. Hydrated Re(NO)Cl3 reacts with KSCN in aqueous medium to produce the ion [Re(NO)Cl2(SCN)3]2- which has been isolated as its phenH+ and dipyH+ salts. The complexes have been characterized through elemental analyses, spectral (u.v., vis., i.r.) properties, magnetic and conductance data. The structures of all those compounds have been proposed.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855260722
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of some nickel(II) and copper(II) complexes of the SCHIFF-Base derived from Acetophenone and Ethylenediamine (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 389 (1972), S. 215-219 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es wird über Herstellung und Eigenschaften von NiII- und CuII-Komplexen mit der SCHIFFschen Base „BAPE“ aus Acetophenon und Äthylendiamin sowie über gemischte BAPE/Acetylaceton-Komplexe berichtet (Formeln I-V s. Abstract). BAPE wirkt dabei als zweizähniger Neutralligand. Die Komplexe wurden durch Elementaranalyse, Elektronenspektrum sowie durch magnetische und Leitfähigkeitsmessungen charakterisiert. Für MII(BAPE)Cl2 wird pseudotetraedrische, für [MII(BAPE)(acac)(H2O)2] ClO4 tetragonale Struktur abgeleitet (MII = Ni, Cu). Der Komplex [Ni(BAPE)(acac)]ClO4 erwies sich als quadratisch-planar.
    Notes: Preparation and properties of the following NiII and CuII complexes of the Schiff base derived from acetophenone and ethylenediamine (BAPE) and also of the mixed NiII and CuII chelates with BAPE and acetylacetone (acac-H) are described: In each case the Schiff base, BAPE, acts as a neutral bidentate ligand. The complexes are characterised by electronic spectra, magnetic susceptibilities, conductivities and elemental analyses. Pseudotetrahedral structure is proposed for M(BAPE)C12, while tetragonal structure for [M(BAPE)(acac)(H2O)2]ClO4 (M = Ni and Cu). The complex [Ni(BAPE) (acac)]ClO4 has been found to be square planar.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723890213
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  • 6
    Electronic Resource
    Electronic Resource
    Oxalato and Chlorooxalato Derivatives of MoIV (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 524 (1985), S. 201-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxalato- und Chlorooxalato-Komplexe von MoIVEs wurden die freie Säure Mo(C2O4H)(OH)3H2O und ihre K+-, NH4+- und Pb2+-Salze dargestellt. Aus diesen Verbindungen wurden auch einige Chloro-oxalato-Komplexe hergestellt. Alle Verbindungen wurden chemisch und physicochemisch charakterisiert, und es werden Vorschläge für ihre Strukturen gemacht.
    Notes: A free acid Mo(C2O4H)(OH)3(H2O) has been prepared. The corresponding K+, NH4+ and Pb2+ salts have been synthesized. Starting from this, some chloro-oxalato derivatives were prepared. All the compounds are characterised by chemical and physico-chemical studies and their structures are proposed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855240526
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  • 7
    Electronic Resource
    Electronic Resource
    Cyanogen Complexes of Rhenium. IV (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 340 (1965), S. 82-85 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Durch Umsetzung von Aquopenta-cyanorhenaten(II) mit Alkalicyaniden wurden die hexacyanoferrat(II)-analogen Salze K4[ReII(CN)6] · 3 H2O und Na4[ReII(CN)6] · 5 H2O gewonnen, die diamagnetisch und aus deren wäßrigen Lösungen die entsprechenden schwerlöslichen Cu(II)- und Co(II)-Salze auszufällen sind.
    Notes: Preparation of K4ReII(CN)6 · 3 H2O and Na4ReII(CN)6 · 5 H2O analogous to hexacyanoferrates(II) are described. They have been prepared by the treatment of corresponding aquopentacyano-rhenates(II) with alkali cyanides. The insoluble copper and cobalt salts have also been prepared. The hexacyanorhenates(II) are diamagnetic at room temperature.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653400110
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  • 8
    Electronic Resource
    Electronic Resource
    Nitrosyl Rhenium Complexes Syntheses, Properties, and Structures of Oxalato Derivatives (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 502 (1983), S. 225-232 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosylrhenium-Komplexe: Synthesen, Eigenschaften und Strukturen von OxalatoderivatenDie freie Säure H[Re(NO)(C2O4)(OH)2H2O] wurde durch Umsetzung von Re(NO)(OH)3 = H2O mit Oxalsäure in wäßrigem Medium erhalten. Die K+-, NH4+- und Pb2+-Salze der Säure wurden isoliert sowie nichtelektrolytische Diimino-Derivate, Re(NO)(C2O4)X = L (X = 1, 10-Phenanthrolin-2,2′-Dipyridyl; L = OH-, Cl-) synthetisiert. Die Komplexe werden elementaranalytisch, spektroskopisch (UV-VIS, IR), magnetisch und durch Leitfähigkeitsdaten charakterisiert und ihre Strukturen vorgeschlagen.
    Notes: The free acid, H[Re(NO)(C2O4)(OH)2(H2O)] has been prepared from the reaction of Re(NO)(OH)3 = H2O with oxalic acid in aqueous medium. The K+, NH4+ and Pb2+ salts of the acid have been isolated. Nonelectrolytic diimino derivatives, Re(NO)(C2O4)X · L (X = 1, 10-phenanthroline, 2,2′-dipyridyl; L = OH-, Cl-) have been synthesized. The complexes have been characterised through elemental analyses, spectral (u.v., vis., i.r.) properties, magnetic and conductance data and their structures are proposed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835020731
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  • 9
    Electronic Resource
    Electronic Resource
    Nitrosyl rhenium complexes: Syntheses, properties, and structures of acetylacetonato derivatives (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 548 (1987), S. 217-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosyl-Rhenium-Komplexe: Darstellung, Eigenschaften und Struktur von Acetylacetonato-DerivatenEinige neue Rhenium-Komplexe, wie [Re(NO)(acac)2(Cl)H2O] und Re(NO)(acac)3(acacH)(H2O)2 wurden durch Umsatz von Re(NO)Cl3 · H2O bzw. Re(NO)(OH)3 · H2O mit Acetylaceton dargestellt. Ferner wird die Darstellung von [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O angegeben. Die Komplexe werden durch Elementaranalyse, spektroskopische, magnetische und Leitfähigkeitsdaten charakterisiert.
    Notes: Some new complexes of rhenium containing monocoordinating acetylacetone viz. [Re(NO)(acac)2(Cl)H2O], Re(NO)(acac)3(acacH)(H2O)2 have been synthesized by reacting acetylacetone with either Re(NO)Cl3 · H2O or Re(NO)(OH)3 · H2O. The preparation of [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O have also been described. These complexes were characterized through their elemental analyses, u.v., vis, i.r., 1Hn.m.r., magnetic, and conductance data.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875480524
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  • 10
    Electronic Resource
    Electronic Resource
    Acetylacetone complexes of tetravalent molybdenum (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 570 (1989), S. 159-166 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acetylacetonat-Komplexe des vierwertigen MolybdänsEinige neue Komplexe des vierwertigen Molybdäns mit Acetylaceton werden dargestellt, wobei sich zwei Reihen von Komplexen mit unterschiedlichen koordinativen Bindungen für Acetylaceton ergeben. Alle Verbindungen werden durch Elementaranalyse, spektroskopische Daten, magnetische und Leitfähigkeits-Messungen charakterisiert.
    Notes: Some new complexes of tetravalent molybdenum containing acetylacetone have been synthesized by the reaction of acetylacetone with hydrated molybdenum(IV) oxide. Two series of complexes having varied coordination linkages for acetylacetone have been isolated under appropriate conditions. All the compounds were characterized through their elemental analyses, spectral data, magnetic moment and conductance measurement.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895700117
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