Fig. 1. (a, b) Displacement ellipsoid plots (50% probability) of (POBOP)Ru(Cl)(PPh3) (POBOP = 1,7-OP(i-Pr)2-2-dehydro-m-carboranyl) (2). (a): a general view (b): a view perpendicular to the (B2–B1–Ru1) plane. Atoms belonging to isopropyl groups of the ligand arms and phenyl rings of triphenylphosphine have been omitted for clarity. Hydrogen atoms of the boron cluster, except for H2 are not shown. Selected bond distances (Å) and angles (°): Ru1–B1 = 2.086(2), Ru1···B2 = 2.417(2), Ru···H2 = 1.96(2), Ru1–Cl1 = 2.501(1), B2–B1–Ru1 = 77.4(1), B1–Ru1–Cl1 = 159.6(1), and H2···Ru1–P3 = 176.5(5). (c) Fragments of 1H and 1H{11B} NMR spectra of 2 featuring a signal from the bridging hydride B2–H1···Ru1 and its coupling to B2 and P3 atom nuclei, respectively.
