Crystal structures of the 1,2-dihydroquinazolinium-4-yl Pd(II) complexes [PdI{C=N(Xy)CH(R)NHC _6H _4-2}(CNXy) _2]OTf (R = Me, CH = CH _2, C _6H _4Me-4) and of the 2-Iminoaryl Pd(II) Complex [PdI(C _6H _4{N=C(H)C _6H _4Me-4}-2)(2,2′-bipyridine)]

摘要

The crystal structures of trans-[PdI{C=N(Xy) CH(R)NHC _6H _4-2}(CNXy) _2]OTf (R = Me(1·CHCl _3) space group P-1, a = 8.7665(4) ?, b = 15.5346(8) ?, c = 16.2415(8)?, α = 72.698(2)°, β = 78.310(3)°, γ = 88.310 (2)°, CH= CH _2 (2·0.5Et _2O) space group P2 _1/c, a = 15.7868(6) ?, b = 14.5066(6) ?, c = 18.5814(7) ?, β = 106.707(2)°, C _6H _4Me-4 (Tol) (3) space group P-1, a = 11.96075(5) ?, b = 12.9452(51) ?, c = 13.1263(5) ?, α = 93.3068, β = 95.822(2)°, γ = 94.572(2)8) have been measured. The structural data suggest the existence of some electron delocalization over the heterocyclic ring, the extension of which seems to depend on the Rsubstituent. The complex [PdI{C _6H _4(N=CHTol)-2}(bpy)] (Tol = C _6H _4Me-4, bpy = 2,2′-bipyridine, 4) is the fourth imino-substituted aryl palladium complex. Complex 4 crystallizes in triclinic P-1with a = 8.7873(5) ?, b = 8.8936(5) ?, c = 13.8375(8) ?, α = 90.116(2)°, β = 92.760(2)°, γ = 106.243(2)°.