NMR spectra of polycrystalline samples of the binary nitrides ScN and VN were acquired under magic-angle spinning. The observed nuclides ⁴⁵Sc, ⁵¹V and ¹⁴N are all quadrupolar nuclei with a spin . However, due to the high symmetry of their rock-salt type structures, the spectra of the nitrides do not exhibit effects of quadrupolar or other anisotropic interactions of significant magnitude. This allows a relatively straightforward evaluation of the acquired spectra, leading to isotropic chemical shift values (δ_iso) of −213 ppm (⁵¹VN), 378 ppm (V¹⁴N), 290 ppm (⁴⁵ScN) and 442 ppm (Sc¹⁴N) against commonly used reference standards. In the wider context of ¹⁴N-NMR of binary nitrides, it is shown that the distance of nitrogen to the nearest neighbour cation can be correlated to the observed chemical shift.

中文翻译：

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通过固态核磁共振光谱表征二元氮化物 VN 和 ScN

在魔角旋转下获得了二元氮化物 ScN 和 VN 的多晶样品的 NMR 光谱。观察到的核素⁴⁵ Sc、⁵¹ V 和¹⁴ N 都是自旋的四极核 。然而，由于其岩盐型结构的高度对称性，氮化物的光谱没有表现出四极或其他显着量级的各向异性相互作用的影响。这允许对所获得的光谱进行相对直接的评估，从而得到 -213 ppm ( ⁵¹ VN)、378 ppm (V ¹⁴ N)、290 ppm ( ⁴⁵ ScN) 和 442 ppm (Sc ^{14 ) 的各向同性化学位移值 (} δ _{iso )}N) 对照常用的参考标准。^{在二元氮化物的14} N-NMR的更广泛背景下，表明氮到最近邻阳离子的距离可以与观察到的化学位移相关联。