ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Molecular structures of mononitroanilines and their thermal decomposition products (1997)
    Springer
    Theoretical chemistry accounts 95 (1997), S. 99-112 
    Details
    ISSN: 1432-2234
    Keywords: Nitroamline ; Internal rotation ; Molecular orbital ; Molecular structure ; Intramolecular transfer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The molecular structures of 2-nitro, 3-nitro, and 4-nitroaniline and their internal rotational isomers were calculated by anab-initio method using HF/6-31G* basis set. The geometries were influenced by the nitro group's position. The perturbation of the amino group on the nitro group was observed in a 2-nitroaniline isomer having a molecular structure distinct from that of the other two isomers. Among them, 4-nitroaniline is the most stable one. Internal rotation tests of either the nitro or amino group of 3-nitro and 4-nitroaniline indicate that no significant deformations of the phenyl ring occurred after internal rotation; however, the internal rotational isomers of 2-nitroaniline differed from its original structure. Relatively easier internal rotation of the nitro group than the amino group and different C-NO2 and C-NH2 bonds indicate the bond-breaking message of nitroanilines. As products of explosives induced by thermal or shock are of interest, five products of 2-nitroaniline were selected to assess their geometries and energies. The above calculations revealed that these products are thermodynamically unfavorable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02341695
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The pinus scrub community as an indicator of soils in Hong Kong (1980)
    Springer
    Plant and soil 56 (1980), S. 243-254 
    Details
    ISSN: 1573-5036
    Keywords: Humid tropics ; Krasnozem ; Pinus massoniana ; Plant indicator ; Red yellow podzol ; Soil acidity ; Soil fertility ; South China
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Consisting ofPinus massoniana, Rhodomyrtus tomentosa, Baeckea frutescens andDicranopteris linearis, thePinus scrub community is widespread and representative of the vegetation in Hong Kong. Three areas, with soils derived separately from granite, sedimentary and volcanic rocks but of the same pine community were selected for the present study. Soil samples were collected and analysed for pH, texture, organic carbon, total nitrogen, cation exchange capacity, and exchangeable K, Na, Ca, Mg, Fe, Mn, Al and H. Plant samples were also collected for the analysis of K, Na, Ca, Mg, Mn, Al, Fe and SiO2. While variations in chemical and physical properties exist among the soils of different geology, they are invariably acidic with high exchangeable Al and H ions whereas the base saturation is exceedingly low. Intra- and inter-species variations in chemical composition are equally notable. While K, Mg and Ca are the dominant elements of uptake and accumulation, the fernD. linearis also stands out as a strong accumulator of SiO2, Al and to some extent, Mn and Fe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205853
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Molecular structures of mononitroanilines and their thermal decomposition products (1997)
    Springer
    Theoretica chimica acta 95 (1997), S. 99-112 
    Details
    ISSN: 0040-5744
    Keywords: Key words: Nitroaniline ; Internal rotation ; Molecular orbital ; Molecular structure ; Intramolecular transfer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract.  The molecular structures of 2-nitro, 3-nitro, and 4-nitroaniline and their internal rotational isomers were calculated by an ab-initio method using HF/6-31G* basis set. The geometries were influenced by the nitro group’s position. The perturbation of the amino group on the nitro group was observed in a 2-nitroaniline isomer having a molecular structure distinct from that of the other two isomers. Among them, 4-nitroaniline is the most stable one. Internal rotation tests of either the nitro or amino group of 3-nitro and 4-nitroaniline indicate that no significant deformations of the phenyl ring occurred after internal rotation; however, the internal rotational isomers of 2-nitroaniline differed from its original structure. Relatively easier internal rotation of the nitro group than the amino group and different C–NO2 and C–NH2 bonds indicate the bond-breaking message of nitroanilines. As products of explosives induced by thermal or shock are of interest, five products of 2-nitroaniline were selected to assess their geometries and energies. The above calculations revealed that these products are thermodynamically unfavorable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002140050187
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...