Figure 7.
![(a) Crystal structure of MnNCN. Mn ions are coordinated to form MnN6 octahedra and carbon bridges the gaps to connect N atoms on alternating layers. (b) The coordination of metal centers and energy levels of MnNCN and MnO. MnNCN is more covalently bound than MnO because C and N are both less electronegative than O [181].](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/nsr/4/1/10.1093_nsr_nww093/6/nww093fig7.jpeg?Expires=1750594692&Signature=5DlrD8gp3VdTdblNwzZwIx7ayrS4VcJoFjZE3twTiOs6lZmrdNGrnbp84hjo0HhVE4Et09HAYX2Up7B4jAnYVYjz0pXIIM6L~mgaaStwCOaDXjGOauKNS5qwIublB6OhhNUn7t4ZVPooFCe2Lhjqtu~qcLmcQib-hP3TiDBrWssDoevXa9GWGkdXk9WdSaKYhy-JYeFMYtD9iBga8MCUcxgOACPznCO2G9~bkiMayNQcrqPXIvuG1vwNkgbS8uZvq98WD5CbV17cYU17yaV-Ewa-jh3cg9GTuZthhVMP4Q1KS-s~Nhe8HxsBrjgXtF8LHu~BYTUCJo4BA5IVJfnzZA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
(a) Crystal structure of MnNCN. Mn ions are coordinated to form MnN6 octahedra and carbon bridges the gaps to connect N atoms on alternating layers. (b) The coordination of metal centers and energy levels of MnNCN and MnO. MnNCN is more covalently bound than MnO because C and N are both less electronegative than O [181].
