完美的J-分解异核单量子相干谱：沿间接维度高效测量一键质子-碳耦合常数。
Perfect J-resolved HSQC: Efficient measurement of one-bond proton-carbon coupling constants along the indirect dimension.
作者信息
Marcó N, Souza A A, Nolis P, Gil R R, Parella T
机构信息
Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain.
Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain; Departamento de Química, Universidade Federal do Piauí, 64049-550 Teresina, PI, Brazil.
出版信息
J Magn Reson. 2017 Mar;276:37-42. doi: 10.1016/j.jmr.2017.01.002. Epub 2017 Jan 3.
A versatile J-resolved HSQC pulse scheme for the speedy, accurate and automated determination of one-bond proton-carbon coupling constants is reported. The implementation of a perfectBIRD element allows a straightforward measurement from the clean doublets obtained along the highly resolved F1 dimension, even for each individual J and J in diastereotopic HCH methylene groups. Real-time homodecoupling during acquisition and other alternatives to minimize accidental signal overlapping in overcrowded spectra are also discussed.
报道了一种通用的J分辨HSQC脉冲序列，用于快速、准确和自动测定一键质子-碳耦合常数。完美BIRD元件的应用使得能够直接从沿高分辨率F1维度获得的清晰双峰进行测量，即使对于非对映异位HCH亚甲基中的每个单独的J和J也是如此。还讨论了采集期间的实时同核去耦以及在拥挤光谱中最小化意外信号重叠的其他方法。
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