Structures, Photoluminescence, and Reversible Vapoluminescence Properties of Neutral Platinum(II) Complexes Containing Extended π-Conjugated Cyclometalated Ligands
作者:Steven C. F. Kui、Stephen Sin-Yin Chui、Chi-Ming Che、Nianyong Zhu
DOI:10.1021/ja061422x
日期:2006.6.1
[(R-C(wedge)N(wedge)C)Pt(DMSO)] (2a-d). In the crystal structures of 2a-c, the molecules are paired in a head-to-tail orientation with Pt...Pt separations >6.3 A, and there are extensive close C-H...pi (d = 2.656-2.891 A), pi...pi (d = 3.322-3.399 A), and C-H...O=S (d = 2.265-2.643 A) contacts. [(Ph-C(wedge)N(wedge)C)Pt(PPh3)] (3) was prepared by reacting 2b with PPh3. Reactions of 2a-d with bis(diphenylphosphino)methane
K2PtCl4 与三齿 RC(wedge)N(wedge)C-H2 配体 2,6-di-(2'-naphthyl)-4-R-pyridine (R = H, 1a; Ph, 1b; 4-BrC6H4, 1c;3,5-F2C6H3,1d) 在冰醋酸中,然后在二甲基亚砜 (DMSO) 中加热,得到复合物 [(RC(wedge)N(wedge)C)Pt(DMSO)] (2a-d)。在 2a-c 的晶体结构中,分子以头对尾的方向配对,Pt...Pt 间距 >6.3 A,并且存在大量接近的 CH...pi (d = 2.656-2.891 A) , pi...pi (d = 3.322-3.399 A) 和 CH...O=S (d = 2.265-2.643 A) 触点。[(Ph-C(wedge)N(wedge)C)Pt(PPh3)] (3) 通过使 2b 与 PPh3 反应制备。2a-d与双(二苯