Počet záznamů: 1

Organic salts of biguanide - An attempt to crystal engineering of novel materials for second harmonic generation

  1. 1.
    0342082 - UFCH-W 2011 RIV NL eng J - Článek v odborném periodiku
    Matulková, Irena - Němec, I. - Císařová, I. - Němec, P. - Vaněk, Přemysl
    Organic salts of biguanide - An attempt to crystal engineering of novel materials for second harmonic generation.
    Journal of Molecular Structure. Roč. 966, 1-3 (2010), s. 23-32 ISSN 0022-2860
    Grant CEP: GA ČR GA203/09/0878
    Výzkumný záměr: CEZ:AV0Z40400503; CEZ:AV0Z10100520
    Klíčová slova: biguanidium(1+) oxalate hemihydrate * biguanidium(1+) hydrogen succinate * biguanidium(2+) tartrate
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 1.599, rok: 2010

    Three organic salts of biguanide with oxalic, succinic and L-tartaric acids have been prepared and X-ray structural analysis has been performed. Biguanidium(1+) oxalate hemihydrate (a = 6.8330(2) angstrom, b = 10.0430(2) angstrom, c = 14.6230(4) angstrom, alpha = 90.236(1), beta = 90.333(1), gamma = 105.605(2), gamma = 966.46(4) angstrom(3), Z = 1. R = 0.0393 for 3704 observed reflections) and biguanidium(1+) hydrogen succinate (a = 6.4600(1) angstrom, b = 6.7670(2) angstrom, c = 11.4150(3) angstrom. alpha = 91.822(1), beta = 105.312(1), gamma = 90.922(1), V = 480.89(2) angstrom(3), Z = 2, R = 0.0357 for 1880 observed reflections) belong to the triclinic space group P T. Their crystal structures are based on biguanidium(1+) pairs connected by intermolecular N-H center dot center dot center dot N hydrogen bonds. The remaining ions (eventually water molecules) form a 3D structural network with these pairs.
    Trvalý link: http://hdl.handle.net/11104/0005852