Back cover image: Carbon-based composite electrocatalysts doped with transition metals and heteroatoms are expected to replace noble metal-based catalysts as high-efficiency for OER ORR. In the article number 10.1002/cey2.317, Zhang et al. prepare an ultralong N,S co-doped carbon nano-hollow-sphere chain encapsulated Co nanoparticles, analyze its growth mechanism catalytic activity ORR/OER, pro...

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In the title compound, C(21)H(18)N(2)O(3)S, the dihedral angle between the naphthalene and quinoline ring systems is 55.53 (2)°, and the torsion angle involving the connecting C-S-O-C atoms is 87.60 (3)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds connect mol-ecules into chains along [100] and there are π-π stacking inter-actions between pairs of chains with a centroid-...

The title compound, C(10)H(5)NO(5), features an intra-molecular O-H⋯O hydrogen bond, forming a six-membered ring with an S(6) ring motif. The nitro group makes a dihedral angle of 71.66 (5)° with the plane of the benzene ring to which it is bound. The two rings are almost coplanar, with a dihedral angle of 4.44 (5)°. Short inter-molecular distances between the centroids of the six-membered ring...