Measurement of Long-Range Interatomic Distances by Solid-State Tritium-NMR Spectroscopy
作者:Alexander K. L. Yuen、Olivier Lafon、Thibault Charpentier、Myriam Roy、Francine Brunet、Patrick Berthault、Dimitrios Sakellariou、Bruno Robert、Sylvie Rimsky、Florence Pillon、Jean-Christophe Cintrat、Bernard Rousseau
DOI:10.1021/ja908915v
日期:2010.2.17
solid-state NMR can be used to provide interatomicdistances. It is shown here that selective labeling in discrete locations with tritium enables accurate measurement of long-range distances owing to the high gyromagnetic ratio of this nucleus, without structural modification of the molecule. This approach gives access to the largest NMRdistance ever measured between two nuclei (14.4 A). (3)H MAS NMR appears
对于与无定形大分子系统结合的配体的结构测定,固态 NMR 可用于提供原子间距离。这里表明,由于该核的高旋磁比,用氚在离散位置进行选择性标记能够准确测量长距离距离,而无需对分子进行结构修饰。这种方法可以获得在两个原子核之间测量到的最大 NMR 距离 (14.4 A)。(3)H MAS NMR 似乎是生物和材料科学中结构应用的有前途的工具。