Some additional aspects of versatile starting compounds for cationic organoiron complexes: molecular structure of the aqua complex [(η-C5Me4Et)Fe(CO)2(OH2)]BF4 and solution behavior of the THF complex [(η---C5R5)Fe(CO)2(THF)]BF4 |
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| Authors: | Munetaka Akita Masako Terada Masako Tanaka Yoshihiko Morooka |
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| Institution: | Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan |
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| Abstract: | The structures of the versatile starting compounds for organoiron complexes, the cationic aqua complex (η5-C5Me4Et)Fe(CO)2(OH2)]BF4 (1b) and the halide complexes (η5-C5Me5)Fe(CO)2-I (2a), (η5-C5Me4Et)Fe(CO)2-I (2b) and (η5-C5Me4Et)Fe(CO)2-Cl (3b), are characterized by X-ray crystallography. Complex 1b Fe---O: 2.022(8) Å and 2.043(9) Å, two independent molecules] is the first structurally characterized example of organoiron aqua complexes. Details of the synthetic procedures for the above complexes and the labile cationic THF complexes η5-C5R5)Fe(CO)2(THF)]BF4 (4) are disclosed, and the dissociation equilibrium of 4 is confirmed by means of variable temperature 1H-NMR as well as saturation transfer experiment. |
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| Keywords: | Iron Carbonyl Crystal structure Halide Water |
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