ISSN:
1600-5740
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
This compound crystallizes as twins, monoclinic, space group P21/a. There being no systematic hkl absences, the chosen cell was primitive. All reciprocal lattice points hkl with h = 0 or ±3n from the twins overlap. From the non-overlapping reflections, the ratio of the masses of the two twins was obtained, but it proved impossible to partition satisfactorily the observed intensities of the overlapping reflections between the twins. Accordingly they were deleted from the data set. The remaining data did not lead to a structure solution; very small average E2 values were obtained for all hkl reflections when (h + l) was odd, implying a (non-Bravais) B-centred monoclinic cell. The data from the larger twin were reindexed to give a primitive cell. Using direct methods, the structure was solved, showing the original cell to be B-centred, even though reflections hkl with (h + l) odd were observed. This is because these (weak) reflections all originate from the other twin. Accordingly, the reflections hkl with h = ±3n do not overlap, as had originally been supposed. These data were restored, forming a complete data set and were used to refine further the structure already obtained. The centrosymmetric dinuclear complex has a chelating dithiocarbamate ligand on each Pd atom with chloride bridges.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108768195012808
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