Fig. 3. Molecular structure of 12 (25% thermal ellipsoids are shown; hydrogen atoms omitted). Selected bond lengths (Å) and angles (°): Cd(1)–N(3) 2.129(4), Cd(1)–Cd(1)′ 2.6328(8), B(1)–N(3) 1.395(8), Si(1)–N(3) 1.730(5), N(3)–Cd(1)–Cd(1)′ 176.70(11), B(1)–N(3)–Si(1) 126.4(4).