Fig. 2. A view of the molecular structure of the anion of salt 9 (hydrogen atoms are omitted for clarity with the exception of H01; thermal ellipsoids are shown with 30% probability). Selected bond lengths (Å) and angles (deg): P1–C1 1.863(2), C1–C2 1.541(3), C2–C3 1.534(3), C3–B1 1.626(3), C3–B2 1.612(3), B1–H01 1.35(2), B2–H01 1.29(2), B1–C3–B2 73.9(2), P1–C1–C2–C3 –151.9(1), C1–C2–C3–B1 –100.1(2), C1–C2–C3–B2 172.5(2).