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A tale of two carbenes: Reaction of :C[N(2,6‐iPr2C6H3)CH]2 (IPr) with Mn3(mes)6 (mes=2,4,6‐trimethylphenyl) yielded the trigonal planar complex [Mn(IPr)(mes)2]. Reduction of this species with potassium/graphite in THF afforded the polymeric dicarbene‐bridged species K[{:C[N(2,6‐iPr2C6H3)]2(CH)C}2Mn(mes)(thf)]⋅THF (see picture). The anionic moiety in this complex is the first reported example of a transition metal complex containing an N‐heterocyclic dicarbene ligand. Gray C, blue N, red Mn.

Reaction of the hydrogenheptaphosphide dianion, [HP(7)](2-), with one equivalent of bis(2,6-diisopropylphenyl)carbodiimide yielded the exo-functionalized cluster [P(7)C(NDipp)(NHDipp)](2-) (Dipp = 2,6-diisopropylphenyl). This species was characterized by single crystal X-ray diffraction, multielement NMR spectroscopy and electrospray mass-spectrometry. DFT calculations on the dianion were also conducted.

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