@article{hbkup:/content/journals/10.5339/connect.2013.46, author = "Chérif, Ichraf and Abdelhak, Jawher and Amami, Mongi and Kébir Hlil, El and Faouzi Zid, Mohamed and Driss, Ahmed", title = "A new bis(oxalato)chromate(III) salt: synthesis, crystal structure, thermal behavior and magnetic properties of (C3H5N2)[Cr(C2O4)2(H2O)2].2H2O", journal= "QScience Connect", year = "2013", volume = "2013", number = "1", pages = "", doi = "https://doi.org/10.5339/connect.2013.46", url = "https://www.qscience.com/content/journals/10.5339/connect.2013.46", publisher = "Hamad bin Khalifa University Press (HBKU Press)", issn = "2223-506X", type = "Journal Article", keywords = "crystal structure", keywords = "chromium(III) complexes", keywords = "visible and ultraviolet spectrometers", keywords = "thermal properties", keywords = "magnetic properties", eid = "46", abstract = "A new chromium(III) salt (C3H5N2)[Cr(C2O4)2(H2O)2].2H2O, trans-diaquabis(oxalato) chromate(III) imidazolium dihydrate, has been synthesized and characterized by single crystal X-ray diffraction. This compound crystallizes in the monoclinic system, C2/c space group with a = 10.836(1)Å, b = 7.541(1)Å, c = 16.349(3)Å and β = 93.52(1)°. The structure of the title compound consists of [Cr(C2O4)2(H2O)2]−  mononuclear anions, imidazolium cations and uncoordinated water molecules. The crystal structure data indicates that the Cr +III ion is six coordinated in a distorted octahedral geometry, with four equatorial O atoms of two oxalate anions acting as chelating ligands and two axial O atoms from two water molecules. Structural cohesion is established by intermolecular O–H…O hydrogen bonds connecting the ionic entities and water molecules. In fact, both coordinated and uncoordinated water molecules play an important role in the hydrogen-bonded system, stabilizing the structure. Magnetic susceptibility measurements of the title compound in the range 2-300K exhibit paramagnetic behavior at high temperature. However, at low temperature, the magnetic data show the occurrence of weak antiferromagnetic intermolecular interactions between the local spin.", }