含2,4,6-三胺基嘧啶之金屬氯化物之合成與結構鑑定

Abstract

Abstract A series of transition metal chloride complexes of the types [NiCl4(H2O)2][H2tapm]2[Cl]2, 1, [CoCl4][H2tapm], 2, and [ZnCl4][H2tapm], 3, have been prepared by the reactions of NiCl2．6H2O, CoCl2．6H2O and ZnCl2 with 2,4,6-triaminopyrimidine (tapm) liginds in HCl solution. The spectroscopic data of 1 ¬¬- 3 has been characterized and the structures of 1 - 3 determined by X-ray crystallography. Crystal data for 1: space group Pī, a = 8.1251 (11) A, b = 8.2632 (17) A, c = 9.1498 (11) A, α = 86.236(14) °, β = 65.285 (9) °, γ = 72.765 (14) °, V = 531.76 (15) A3, Z = 1, with final residuals R1 = 0.0227 and wR2 = 0.0641. Crystal data for 2: space group R3, a = 10.0622 (9) A, b = 10.0622 (9) A, c = 9.7212 (16) A, V = 852.39 (18) A3, Z = 3, with final residuals R1 = 0.0229 and wR2 = 0.0575. Crystal data for 3: space group R3, a = 10.0571 (8) A, b = 10.0571 (8) A, c = 9.7126 (7) A, V = 860.77 (11) A3, Z = 3, with final residuals R1 = 0.0240 and wR2 = 0.0635. In complex 1, protonated ligands are interacted with metal chloride anions through N-H…Cl and N-H…O hydrogen bonds, and chloride ions are interacted with protonated ligands and metal chloride anions through N-H…Cl and O-H…Cl hydrogen bonds. In complexes 2 and 3, protonated ligands are interacted with metal chloride anions through N-H…Cl hydrogen bonds. While the metal center in 1 forms the octahedral geometry, those in 2 and 3 adopt the tetrahedral geometry.