Abstract
Addition of N‐heterocyclic carbenes [L = 1,3‐di‐tert‐butylimidazolin‐2‐ylidene (ItBu), 1,3‐diisopropyl‐4,5‐dimethylimidazolin‐2‐yildene (IiPrMe2), 1,3‐di‐mesitylimidazolin‐2‐yildene (IMes), and 1,3‐bis(2,6‐diisopropylphenyl)imidazolin‐2‐yildene (IPr)] to manganocene [(C5H5)2Mn] forms the neutral Lewis base adducts [(C5H5)2Mn(L)] (2–5) in moderate yields. Complexes 2–4 were structurally characterized and their solid‐state magnetism was investigated between T = 2.6–300 K. In contrast to literature reports, these materials exclusively adopt a high‐spin (S = 5/2) ground state.
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More From: Zeitschrift für anorganische und allgemeine Chemie
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