ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract The crystal and molecular structure of bis[(1,2-dihapto-3,5-dimethylpyrazolido)-π-allylpalladium(II)], C16H24N4Pd2, has been determined by X-ray diffraction techniques. The crystals are monoclinic,P21/c (No. 14), witha = 8.752(1),b = 18.932(2),c = 11.780(3) Å, and β = 109.78(1) °. The observed crystal density (1.746 g cm−3) agrees well with that calculated on the basis of four molecules per unit cell (1.754 g cm−3). The structure has been refined by full-matrix least-squares techniques to a finalR 1 value of 0.045 (R 2 = 0.056) for 2974 unique reflections withI net⩾7 counts sec−1. The Pd2N4 ring is in a boat conformation in which the two palladium atoms are 1.113 and 1.064 Å out of the plane defined by the four nitrogen atoms. The Pd-C bond distances to the terminal atoms of the π-allyl groups (2.12 Å) are longer than those to the central carbon atoms (2.06 Å). The molecule possesses approximatemm2 (C 2v ) symmetry.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01290880
Permalink