Addition of Trimethylsilyl Cyanide to the C≡N Bond of Nitriles

1,3-Dipolar cycloadditions to coordinated azide in cobalt chelate complexes of the type LCo(chelate)N3

“…(46) W. C. Trogler, L. A. Epps, and L. G. Marzilli, Inorg. Chem.,14, 2708 (1975). (47) R. Huisgen, G. Szeimies, and L. Mobius,Chem.…”

Synthesis of six-coordinate mono-, bis-, and tris(tetrazolato) complexes via [3 + 2] cycloadditions of nitriles to silicon-bound azido ligands

“…These include Lewis base assisted HX elimination (i), [19][20][21] oxidative addition of tetrazole (ii), 22 Brønsted acid-base reaction (iii), 8,23 thermally activated [3 + 2] cycloaddition of mono(azido)silanes and aryl or alkyl nitriles (iv), [24][25][26] and silylation (v), 27 resulting in 5-substituted tetrazole derivatives with the exception of method (v). Compounds in which one tetrazolyl group is bound directly to silicon are represented by several dozens of examples, including silanes, 28 SiMe 3 (κN(2)mtz), 28,29 SiMe 3 (κN(2)-5-R-tz), 30 SiMe 3 (κN(2)-ptz), 30,31,65 SiMe 3 (tz-NH-SiMe 3 ), 31 SiMe 3 (κN(1)-tz-CX 3 ), 32 SiMe 3 (κN(1)-ptz), 33 SiMe 3 (κN(1)-tz-OSiMe 3 ), 34,35 SiMe 3 (κN(1)-tz-NH-SiMe 3 ), 31 SiMe 3 (κN(1)-htz), 27,31 SiMe 2 H(κN(1)-htz) 21 and SiMe 2 {C(SiMe 2 Ph) 3 }(κN(2)-mtz) 28 and the hexacoordinate Si(salen)(Ph)(κN(2)-ptz) 22 (tz = tetrazolyl, htz = 5-H-CN 4 , mtz = 5-Me-CN 4 , ptz = 5-Ph-CN 4 , salen = bis(salicyliden)ethylenediamine, R = Et, Ph, CH 2 Ph, X = F, Cl). However, poly(tetrazolyl) compounds and higher-coordinated complexes bearing tetrazolato ligands and main group elements as coordination centres are extremely rare (for an overview of higher-coordinated molecular silicon compounds see ref.…”