The crystal and molecular structure of 9,10-dihydrophenanthrene-chromium tricarbonyl

Abstract

The crystal structure of 9,10-dihydrophenanthrenechromium tricarbonyl has been determined by three-dimensional X-ray analysis. There are four molecules in a monoclinic cell of dimensions a= 10·50, b= 12·73, c= 11·98 Å, β= 118·9°. The space group is P2₁/c. The structure has been refined to an R-value of 0·086 for 4390 independent reflections. The Cr–C_sp² bonded distances range from 2·200 ± 4 to 2·248 ± 3 Å, and the mean Cr–C_sp distance is 1·833 Å.