A GIPAW versus GIAO-ZORA-SO study of 13C and 15N CPMAS NMR chemical shifts of aromatic and heterocyclic bromo derivatives

IF 1.8 3区 化学 Q4 CHEMISTRY, PHYSICAL
Marta Marín-Luna , Rosa M. Claramunt , Concepción López , Marta Pérez-Torralba , Dionisia Sanz , Felipe Reviriego , Ibon Alkorta , José Elguero
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引用次数: 5

Abstract

Theoretical simulation of NMR parameters in compounds bearing heavy atoms generally requires the application of relativistic corrections. We report herein the theoretical characterization of 13C and 15N CPMAS NMR of known bromo-derivative crystals by using both the GIPAW and the combined GIAO-ZORA-SO approximation methods. Several statistical analyses were performed to compare both approaches, with non-relativistic GIPAW method being more useful to predict the 13C and 15N chemical shifts. The problem of applying GIPAW to crystal structures showing static or dynamic crystalline disorder of the special class resulting in half-protons will be discussed in detail.

Abstract Image

芳香和杂环溴衍生物13C和15N CPMAS NMR化学位移的GIPAW和GIAO-ZORA-SO研究
含重原子化合物的核磁共振参数的理论模拟通常需要应用相对论修正。本文报道了已知溴衍生物晶体的13C和15N CPMAS NMR的理论表征,采用GIPAW和组合GIAO-ZORA-SO近似方法。对两种方法进行了一些统计分析比较,非相对论GIPAW方法在预测13C和15N化学位移方面更有用。本文将详细讨论将GIPAW应用于具有静态或动态晶体无序的特殊类晶体结构中,从而产生半质子的问题。
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来源期刊
CiteScore
5.30
自引率
9.40%
发文量
42
审稿时长
72 days
期刊介绍: The journal Solid State Nuclear Magnetic Resonance publishes original manuscripts of high scientific quality dealing with all experimental and theoretical aspects of solid state NMR. This includes advances in instrumentation, development of new experimental techniques and methodology, new theoretical insights, new data processing and simulation methods, and original applications of established or novel methods to scientific problems.
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