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Insertion Reactions of NH3 and H2O with the Ferriogermylenes ArGeFeCp(CO)2 (Ar = ArMe6 (−C6H3‑(C6H2‑2,4,6-Me3)2) or AriPr4 (−C6H3‑(C6H3‑2,6‑iPr2)2); Cp = η5‑C5H5): Structural Isomerism and Polymorphism in a Metallogermylene

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journal contribution
posted on 12.10.2021, 19:49 authored by Alice C. Phung, James C. Fettinger, Philip P. Power
The ferriogermylenes ArGeFeCp­(CO)2 (Ar = −C6H3-(C6H2-2,4,6-Me3)2 (ArMe6 (1a)), Ar = −C6H3-(C6H3-2,6-iPr2)2 (AriPr4 (1b))) (Cp = η5-C5H5) react with an excess of NH3(l) to form the insertion products ArGe­(NH2)­(H)­FeCp­(CO)2 (Ar = ArMe6 (2a) or AriPr4 (2b)). Similarly, ferriogermylene 1a reacts with water to form the insertion product ArMe6Ge­(OH)­(H)­FeCp­(CO)2 (3). Unusually, crystals of 1a exist as three different polymorphs whose structures differ primarily in their Cipso–Ge–Fe bond angles. Complexes 13 were characterized by NMR, UV–vis, IR spectroscopy, and X-ray crystallography.