Acta Cryst. (2013). C69, 219-224 [ doi:10.1107/S0108270113002801 ]
Abstract: New complexes containing the 1,4-bis(pyridazin-4-yl)benzene ligand, namely diaquatetrakis[1,4-bis(pyridazin-4-yl)benzene-N2]cadmium(II) hexaiodidodicadmate(II), [Cd(C14H10N4)4(H2O)2][Cd2I6], (I), and poly[[-1,4-bis(pyridazin-4-yl)benzene-2N2:N2']bis(-thiocyanato-2N:S)cadmium(II)], [Cd(NCS)2(C14H10N4)]n, (II), demonstrate the adaptability of the coordination geometries towards the demands of slipped - stacking interactions between the extended organic ligands. In (I), the discrete cationic [Cd-N = 2.408 (3) and 2.413 (3) Å] and anionic [Cd-I = 2.709 (2)-3.1201 (14) Å] entities are situated across centres of inversion. The cations associate via complementary O-HN2' hydrogen bonding [ON = 2.748 (4) and 2.765 (4) Å] and extensive triple - stacking interactions between pairs of pyridazine and phenylene rings [centroid-centroid distances (CCD) = 3.782 (4)-4.286 (3) Å] to yield two-dimensional square nets. The [Cd2I6]2- anions reside in channels generated by packing of successive nets. In (II), the CdII cation lies on a centre of inversion and the ligand is situated across a centre of inversion. A two-dimensional coordination array is formed by crosslinking of linear [Cd(-NCS)2]n chains [Cd-N = 2.3004 (14) Å and Cd-S = 2.7804 (5) Å] with N2:N2'-bidentate organic bridges [Cd-N = 2.3893 (12) Å], which generate - stacks by double-slipped interactions between phenylene and pyridazine rings [CCD = 3.721 (2) Å].
Formula: [Cd(C14H10N4)4(H2O)2][Cd2I6] and [Cd(NCS)2(C14H10N4)]
Structure factor file (CIF format) (303.1 kbytes)
Structure factor file (CIF format) (100.4 kbytes)
To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.
The download button will force most browsers to prompt for a file name to store the data on your hard disk.
Where possible, images are represented by thumbnails.
Copyright © International Union of Crystallography