CRYSTAL-STRUCTURE OF TRIS(2-PYRIDYLTHIO-2-PYRIDINIUM)PENTAISOTHIOCYANATODIOXOURANATE(VI)

The crystal structure of [DPSH]3+[UO2[NCS)5]3- (DPSH = 2 pyridylthio-2-pyridinium) has been determined by standard methods using diffractometer data. Crystals are monoclinic, space group P21/a, with a=33.16 (3), b=16.68(2), c=7.85(1) Å, and β=97.3(1){ring operator}; Dc=1.65 g · cm-3 for Z=4. The structure has been refined to R=5.8% by least squares methods. Five thiocyanate groups are equatorially bonded to the linear uranyl group. The mean of the five U-N, N-C, and C-S bond distances are 2.45, 1.17, and 1.59 Å respectively. The protonated DPS molecules have the N,N-inside conformations. © 1979 Verlag Chemie, Gmbh.