cyanoaurates. Carbon-13 and nitrogen-15 NMR spectra of samples enriched with isotopically labeled 13C,15N cyanide ligands were recorded for stationary samples and samples spinning at the magic angle. Several salts of the dicyanoaurate(I) anion, M[Au(CN)2], where M = n-butylammonium, potassium, and thallium, were studied via solid-state NMR. A gold(III) cyanide, K[Au(CN)4], was also investigated. Carbon-13 and
固态核磁共振已被用于研究几种
氰脲酸酯。记录了富含同位素标记的13 C,15 N
氰化物
配体的样品的碳13和氮15 NMR光谱,用于固定样品和以魔角旋转的样品。通过固态NMR研究了双
氰基
金(I)阴离子的几种盐,M [Au(CN)2 ],其中M =正丁基
铵,
钾和th。还研究了
氰化
金(III)K [Au(CN)4 ]。报告了每种盐的碳13和氮15
化学位移张量,以及测得的13 C,15 N直接偶极偶合常数以及相关的衍生
氰化物键长,r(C,N)。确定[(n -C 4 H 9)4 N] [Au(CN)2 ]中的r(C,N)值为1.17(5)Å,比以前报道的X射线衍射更现实值为1.03(4)Å。来自Tl [Au(CN)2 ]的较大的13 C NMR线宽为250-315 Hz,这归因于与197 Au(I = 3/2)和/或203/205 Tl(I = 1/2)耦合,通过横向弛豫常数T 2的测量证实。对与各种