because of more efficient orbital overlap. The association of 2 with (4-NC5F4)2Te and the structure of the formed adduct in CDCl3 solutions was studied by using 1H, 13C, 19F, 195Pt, 125Te NMR, 19F–1H HOESY, and diffusion NMR methods. The 195Pt and 125Te NMR titration and the isothermal titration calorimetry results revealed a 1:1 association of 2 with (4-NC5F4)2Te.
铂 (II) 配合物表现出带正电荷的
金属中心的d z 2 -亲核性,即 [Pt(ppy)(acac)] ( 1;acacH 是
乙酰丙酮;ppyH 是 2-Ph-
吡啶) 和 [Pt( ppy)(tmhd)] ( 2 ; tmhdH 是 2,2,6,6-
四甲基庚二酮-3,5),与
硫属键供体 (4-NC 5 F 4 ) 2 Ch (Ch = Se, Te)共结晶形成两个同构共晶1 · 1 / 2 (4-NC 5 F 4 ) 2 Ch, 和2 · 2 / 3 (4-NC 5 F4 ) 2 Se 和2 ·(4-NC 5 F 4 ) 2 Te。这些共晶的 X 射线数据和适当的理论 DFT 计算 (PBE0-D3BJ) 允许识别包含
金属的
硫属元素键,即 Ch... d z 2 -Pt II(其能量跨度从 -7 到 - 12 大卡/摩尔)。在1 · 1 / 2 (4-NC 5 F 4 ) 2 Ch, Ch