The structures of three arene-tricarbonylchromium complexes prepared from cone and 1,3-alternate-25, 26,27,28-tetrapropoxycalixarene(1) and Cr(CO)6 were determined by single crystal X-ray studies. Crystal data for 1,3-alternate-1·Cr(CO)3 are space group P21/a, a=19.496(3)Å, b=11.118(2)Å, c=19.121(2)Å, β=109.95°(1) and V=3895Å3. The structure was refined to Rw=0.068. Crystal data for cone-1·Cr(CO)3 are space group P21/a, a=21.457(4)Å, b=12.184(1)Å, c=14.816(2)Å, β=91.61°(1) and V=3872Å3. The structure was refined to Rw=0.077. Crystal data for cone-1·2Cr(CO)3 are space group P21/a, a=18.019(3)Å, b=41.347(4)Å, c=11.743(2)Å, β=97.39°(1) and V=8676Å3. The single crystal included two similar but slightly different structures but the data were successfully refined to Rw=0.092. The structure of 1,3-alternate-1·Cr(CO)3 differs only slightly from that of the regular 1,3-alternate calixarene. In contrast, cone-1·Cr(CO)3 and cone-1·2Cr(CO)3 show an unusual conformation with a pair of faced gablelike roofs, which is considerbly distorted from the regular cone calixarene. The origin of this distortion is discussed in combination with the spectral studies.
|Number of pages||10|
|Journal||Journal of Inclusion Phenomena and Molecular Recognition in Chemistry|
|Publication status||Published - Mar 1994|
All Science Journal Classification (ASJC) codes
- Food Science
- Condensed Matter Physics