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Lichtenberger, D.L.; Renshaw, S.K.; Bullock, R.M., Metal-acetylide bonding in («eta»<5>-C5H5)Fe(CO)2C«equiv»CR compounds. Measures of metal-d«pi»-acetylide-«pi» interactions from photoelectron spectroscopy, J. Am. Chem. Soc., 1993, 115, 3276. [all data]