Library

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
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 818-819 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal structure of the title compound, lithium (1-carboxyethenyloxy)phosphonate monohydrate, Li+·C3H4O6P−·H2O, is governed by lithium–oxygen interactions and hydrogen bonds. The Li+ cation is tetrahedrally coordinated by phosphate and water O atoms. The phosphoenolpyruvate monoanions form carboxyl-to-carboxyl and phosphate-to-water hydrogen bonds.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1310-1311 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title compound, [Mn(CF3COO)2(H2O)4], crystallizes in the monoclinic space group C2/c. At about 215 K, it undergoes a reversible phase transition, which leads to crystal twinning. The crystal structure of the high-temperature phase was determined at 220 K. The Mn2+ ion lies on a twofold axis and is octahedrally coordinated by two monodentate trifluoroacetate ligands in apical positions and by four equatorial aqua ligands, two of which lie on the twofold axis. Hydrogen-bonding interactions connect the complex molecules, generating a three–dimensional network.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical crystallography 24 (1994), S. 731-737 
    ISSN: 1572-8854
    Keywords: Synthesis ; crystal structure ; IR data
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The synthesis, crystal structure and IR data are reported for Na2[Zn(CMA)4]·2EtOH·7H2O, where CMA− is the 9,10-dihydro-9-oxo-10-acridinacetate ion. The complex crystallizes in the monoclinic space group P2/n, with cell dimensionsa=17.335(9),b=8.440(5),c=21.875(12) Å, β=91.94(5)°,Z=2. The structure was solved by direct methods and refined to a finalR value of 0.0363 for 3022 non-zero reflections. The Zn2+ ion occupies twofold axis and is coordinated to four carboxylate ligands, the ZnO4 tetrahedron is considerably distorted with Zn−O distances of 1.978(3) and 1.961(3)Å. Each Na+ cation interacts with two water, one ethanol, and three carboxylate O atoms comprising distorted octahedron. The Zn2+ and Na+ cations are linked through monooxygen and syn-syn carboxylate bridges forming a trinuclear, mixed-metal cluster. The Zn...Na separation is 3.267(2)Å and Na...Na distance equals 3.520(2)Å. All oxygen bonded H-atoms are utilized in hydrogen bonds. The acridone rings overlap in the crystal with the 3.5 Å interlayer separations. The compound has been characterized by IR spectroscopy.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract FeCl3 in ethyl acetate under the influence of sunlight, undergoes partial reduction yields the [Fe(CH3CO2Et)6](FeCl4)2 salt. The Mössbauer spectra showed that the iron atoms are at +2 and +3 oxidation states. The crystal structure determined by X-ray diffraction methods at 80 K and refined by full-matrix least-squares techniques toR=0.028 for 2410 independent non-zero reflections is in good agreement with the Mössbauer results. The [Fe(CH3CO2Et)6]2+ cations occupy centers of symmetry and the Fe2+ ions are octahedrally coordinated by six carbonyl oxygen atoms of six ethyl acetate molecules.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 533 (1986), S. 215-224 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaktion zwischen [MgCl2(THF)2] und [MoOCl3(THF)2]. Die Kristallstrukturen von [Mg(THF)6] [MoOCl4THF]2 und [Mg2(m̈-Cl)3(THF)6] [MoOCl4THF]Zur Entfernung von zwei Chloratomen aus [MgCl2(THF)2] werden zwei [MoOCl3(THF)2]-Moleküle benötigt. Diese Reaktion ergibt das grüne, kristalline Salz [Mg(THF)6][MoOCl4THF]2 IV. Verbindung IV reagiert mit 3 weiteren Äquivalenten Bis(tetrahydrofuran)magnesiumdichlorid, wobei eine grüne, ionische Verbindung [Mg2(m̈-Cl)3(THF)6][MoOCl4THF] V gebildet wird. Beide Verbindungen, IV und V, unterscheiden sich nur in der Struktur des Kations, was darauf hinweist, daß das Tris-m̈-Chlorhexakis(tetrahydrofuran)dimagnesium-Kation V in einer Reaktion zwischen dem [Mg(THF)6]2+-Kation und [MgCl2(THF)2] gebildet wird. Die Kristallstrukturen der Verbindungen IV und V wurden röntgenographisch untersucht. Das [Mg(THF)6]2+-Kation bildet Oktaeder, die tetragonal deformiert sind, wobei sich das Magnesiumatom im Symmetriezentrum befindet. Im homobimetallischen, di-oktaedrischen [Mg2(m̈-Cl)3(THF)6]-Kation sind die Magnesiumatome von drei brückenbildenden Chloratomen und drei THF-Molekülen umgeben. Die Struktur von [MoOCl4THF]- in IV ist ähnlich der in V. In diesen Anionen ist das Molybdänatom hexakoordiniert, wobei sich vier Chloratome in der äquatorialen Ebene befinden.
    Notes: Two [MoOCl3(THF)2] molecules are used for detachment of two Cl atoms from [MgCl2(THF)2]. In such reaction a green crystalline salt [Mg(THF)6][MoOCl4THF]2 IV is formed. Compound IV reacts further with 3 equivalents of bis(tetrahydrofuran)magnesium dichloride, yielding a green ionic [Mg2(m̈-Cl)3(THF)6][MoOCl4THF] compound V. Compound IV and V vary only in a structure of cation what indicated that the tri-m̈-chlorohexakis(tetrahydrofuran)dimagnesium(II) cation in V is really formed in reaction between [Mg(THF)6]2+ cation and [MgCl2(THF)2]. The crystal structure of compounds IV and V has been solved by X-ray diffraction method. The [Mg(THF)6]2+ cation forms the tetragonally distorted octahedron with the magnesium atom in the symmetry centre. In homobimetallic di-octahedral [Mg2(m̈-Cl)3(THF)6]+ cation the magnesium atoms are surrounded by three bridging chlorine atoms and three THF molecules. The structures of [MoOCl4THF]- in IV and V are similar. In those anions the molybdenum atom is hexacoordinated with four chlorine atoms in equatorial plane.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...