Department of Chemistry, University of California - Berkeley, Berkeley, California 94720, USA.
J Am Chem Soc. 2013 Jul 3;135(26):9612-5. doi: 10.1021/ja404339u. Epub 2013 Jun 21.
A strategy for the control of electron density at a metal center is reported, which uses a remote chemical switch involving second-sphere Lewis acid binding that modulates electron density in the first coordination sphere. Binding of the Lewis acid B(C6F5)3 at remote nitrogen positions of a bipyrazine-diarylplatinum(II) complex accelerates biaryl reductive elimination by a factor of 64,000.
报道了一种控制金属中心电子密度的策略，该策略使用涉及第二配位球路易斯酸结合的远程化学开关来调节第一配位球中的电子密度。路易斯酸 B(C6F5)3 与双吡嗪-二芳基铂（II）配合物的远程氮位置的结合加速了联芳基的还原消除，其速率提高了 64,000 倍。
