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@article{203307, author = {Pinkas, Jiří and Huffman, J. C. and Chisholm, M. H. and Caulton, K. G.}, article_location = {Spojené státy americké}, article_number = {21}, keywords = {MOLECULAR-STRUCTURES; COMPLEXES; CRYSTAL}, language = {eng}, issn = {0020-1669}, journal = {Inorg. Chem.}, title = {Origin of Different Coordination Polyhedra for Cu[CF3C(O)CHC(O)CF3]2L, (L = H2O, NH3)}, volume = {34}, year = {1995} }
TY - JOUR ID - 203307 AU - Pinkas, Jiří - Huffman, J. C. - Chisholm, M. H. - Caulton, K. G. PY - 1995 TI - Origin of Different Coordination Polyhedra for Cu[CF3C(O)CHC(O)CF3]2L, (L = H2O, NH3) JF - Inorg. Chem. VL - 34 IS - 21 SP - 5314 EP - 5314 PB - American Chemical Society, Washington DC SN - 00201669 KW - MOLECULAR-STRUCTURES KW - COMPLEXES KW - CRYSTAL N2 - Cu(hfacac)(2)(NH3) (hfacac = CF3C(O)CHC(O)CF3-) is shown to have a trigonal-bipyramidal structure with Cu-O (axial) = 1.945(3) Angstrom, Cu-O (equatorial) = 2.075(3) Angstrom and Cu-N = 1.933(6) Angstrom. This contrasts with the square-pyramidal structure of Cu(hfacac)(2)(H2O), which has a long (2.204(3) Angstrom) Cu-OH2 bond. The ammine complex retains its NH3 ligand upon vacuum sublimation, while the H2O complex loses water. The difference in coordination geometry and Cu-L distance (L = H2O, NH3) is traced to minimizing a antibonding interactions with the stronger ligand L, which, by the criterion of 10Dq, is NH3. Crystal data (-67 degrees C): a = 20.594(6) Angstrom, b = 8.881(2) Angstrom, c = 8.619(2) Angstrom, beta = 104.49(1)degrees with Z = 4 in space group C2/c. ER -
PINKAS, Jiří, J. C. HUFFMAN, M. H. CHISHOLM a K. G. CAULTON. Origin of Different Coordination Polyhedra for Cu[CF3C(O)CHC(O)CF3]2L, (L = H2O, NH3). \textit{Inorg. Chem.}. Spojené státy americké: American Chemical Society, Washington DC, 1995, roč.~34, č.~21, s.~5314-5318. ISSN~0020-1669.
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