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. 2021 Aug 12;7(8):2151–2159. doi: 10.1016/j.chempr.2021.05.002

Figure 2.

Figure 2

Synthesis and molecular structure of 2

(A) Synthesis of 2.

(B) Microscopic photograph of crystals of 2.

(C) Top-view of molecular structure of 2 as obtained by SCXRD/Hirshfeld atom refinement.

(D) Side-view of the molecular structure of 2, showing hydrogen-silicon distances. Hydrogen atoms are refined freely and anisotropically, depicted at fixed positions, other atoms as thermal displacement ellipsoids of 50% probability. Selected bond distances (pm) and angles (°): N1–Si 178.84(5), N2–Si 179.26(5), N3–Si 179.90(4), N4–Si 178.81(4), H21b–Si 273.3(8), H29b–Si 240.3(8), H27b–Si 258.5(8), H35b–Si 296.3(8), N1–Si–N3 178.19(2), N2–Si–N4 176.08(2), N1–Si–N2 90.15(2), N2–Si–N3 89.28(2), N3–Si–N4 90.43(2), N4–Si–N1 90.26(2).