Bonding Forces in Short Hydrogen Bonds. Crystal Structure of PdII(dpgH)2
| Autor: | Christopher J. Curtis, Ronald F. See, Seethraman Santhanam, Joseph W. Ziller, Kevin W. McConnell, William M. Strub |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Inorganic Chemistry. 36:4151-4155 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/ic9701266 |
| Popis: | An analysis of the structures of 16 square-planar metal(II)−diglyoxime compounds was undertaken to determine the bonding forces which might alter the O···O distance observed for strong, low-barrier hydrogen bonds. This series of structures includes the X-ray diffraction structure of PdII(dpgH)2 (dpg = diphenylglyoxime), with data collected at 158 K. This compound crystallizes in the space group Ibam with a = 15.324(2) A, b = 22.634(3) A, c = 6.8811(7) A, V = 2386.6(5) A3, Z = 4, and R = 4.89% for the 1105 reflections with |Fo| > 4σ(F) and 7.91% for all 1490 reflections. The observed Pd−N bond distances are 1.958(6) and 1.959(6) A. The distance between the two oxygen atoms that participate in the short hydrogen bond is 2.550(10) A; this distance is the shortest thus far reported for a palladium−diglyoxime compound. The hydrogen atom appears to be nearly centered, with refined O−H distances of 1.32(22) and 1.39(23) A in the O··H··O system; this interpretation of the hydrogen position is supported by nearly ... |
| Databáze: | OpenAIRE |
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