Library

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
    Copper(I) and copper(II) complexes of an ethylene cross-bridged cyclam (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 37-39 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The preparation and crystal structures of (4,11-dibenzyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane-κ4N)copper(I) hexa-fluorophosphate, [Cu(C26H38N4)]PF6, and acetonitrile(4,11-dibenzyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane-κ4N)-copper(II) bis(hexafluorophosphate), [Cu(C2H3N)(C26H38-N4)](PF6)2, are described. The CuI ion is tetracoordinated in a very distorted tetrahedron, while the CuII analogue is pentacoordinated in a square pyramid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S010827019901255X
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    trans-Dioxocyclam (1,4,8,11-tetraazacyclotetradecane-2,9-dione) dihydrate and its NiII complex (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 359-362 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal structures are reported of trans-dioxocyclam dihydrate, C10H20N4O2·2H2O, a structural isomer of the well known cis-dioxocyclam, and of its novel Ni complex, (1,4,8,11-tetraazacyclotetradecane-2,9-dionato-κ4N)nickel(II) dihydrate, [Ni(C10H18N4O2)]·2H2O, the first example of a transition metal complex of this ligand. Both molecules lie on crystallographic centres of inversion. The free ligand has two of its N atoms turned outwards from the ring and hydrogen bonded to water molecules. A major conformational change takes place in the complex in which the ligand binds in a trans tetradentate fashion, as suggested by the electronic spectrum. The nickel(II) ion is low spin, although the electronic spectrum of the complex in water indicates an equilibrium mixture of low-spin and high-spin species. The irreversible electrochemical oxidation of [NiL1] (L1 is deprotonated trans-dioxocyclam, C10H18N4O2) in water occurs at a potential of 0.964 V [versus SHE (standard hydrogen electrode)], which is very similar to that for the Ni–cis-dioxocyclam complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100020308
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and Characterization of Silver(I) Complexes with C-Alkyl Functionalized N,N′-Diphenylamidinates: Tetrameric and Trimeric Structural Motifs (2000)
    Springer
    Journal of cluster science 11 (2000), S. 261-283 
    Details
    ISSN: 1572-8862
    Keywords: silver ; amidines ; diphenylamidines ; tetrameric ; C-alkylamidines ; thermal stability ; imaging ; thermographic ; photothermographic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract N,N′−Diphenylamidines and the silver(I) complexes of their deprotonated anions have been synthesized. Previously uncharacterized tetrameric structural motifs were produced by the inclusion of alkyl substituents at the amidinate carbon. The addition of a 2-methoxy functional group to the phenyl ring resulted in a cationic silver trimer in which hydrogen bonding links silver(I)-bound water molecules to the methoxy substituents. The thermal stabilities of the tetrameric species vary with alkyl chain length. The new complexes are: tetrakis(N,N′-diphenylpropamidinato) tetra silver(I), 1, tetrakis(N,N′-diphenylbutamidinato) tetrasilver(I) 2, tetrakis(N,N′-diphenylpentamidinato) tetra silver(I) 3, (N,N′-diphenyloctamidinato)silver(I) 4, (tetrakis(N,N′-di(4-n-butyl)phenylpropamidinato)tetrasilver(I), 5, bis(N,N′-di(2-methoxy)phenylacetamidinato)diaquatrisilver(I) nitrate 6 and tetrakis(N,N′-di(4-methoxy)phenylacetamidinato) tetrasilver(I), 7. Compounds 1, 5, 6 and 7 were structurally characterized by X-ray methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009085319864
    Library Location Call Number Volume/Issue/Year 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...