ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract The crystal and molecular structure of 1,2,6-trichlorotris(pyridine)chromium(III) is discussed. Monoclinic crystals were indexed in the nonstandard space group, P21/n (No. 14). The unit cell contains four molecules:a=9.088(1) Å,b=12.442(1) Å,c=15.557(1) Å, andβ=91.33°;d x=1.49 g cm−3,d m=1.49 g cm−3. A total of 4056 unique reflections was recorded on a Syntex automated four-circle diffractometer usingMo Kα radiation. After the appropriate Lorentz and polarization corrections were made, the structure was solved by standard Patterson techniques. Least-squares refinement and difference Fourier analysis revealed all other atoms. The final agreement factors areR=0.062 andR w=0.052. The nearly planar pyridine ring systems were found to pivot in a fan-blade arrangement about the plane described by the three nitrogen atoms and one chlorine atom. The geometry about the central chromium atom agrees with the expected octahedral configuration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01164777
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