首页> 外文OA文献 >DFT investigation of 3d transition metal NMR shielding tensors in diamagnetic systems using the gauge-including projector augmented-wave method
【2h】

DFT investigation of 3d transition metal NMR shielding tensors in diamagnetic systems using the gauge-including projector augmented-wave method

机译:三维过渡金属核磁共振屏蔽张量的DFT研究   使用包括仪表的投影仪增强波方法的反磁系统

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

We present a density functional theory based method for calculating NMRshielding tensors for 3d transition metal nuclei using periodic boundaryconditions. Calculations employ the gauge-including projector augmented-wavepseudopotentials method. The effects of ultrasoft pseudopotential and inducedapproximations on the second-order magnetic response are intensively examined.The reliability and the strength of the approach for 49Ti and 51V nuclei isshown by comparison with traditional quantum chemical methods, using benchmarksof finite organometallic systems. Application to infinite systems is validatedthrough comparison to experimental data for the 51V nucleus in various vanadiumoxide based compounds. The successful agreement obtained for isotropic chemicalshifts contrasts with full estimation of the shielding tensor eigenvalues,revealing the limitation of pure exchange-correlation functionals compared totheir exact-exchange corrected analogues.
机译:我们提出一种基于密度泛函理论的方法,用于使用周期性边界条件计算3d过渡金属核的NMR屏蔽张量。计算采用包括投影仪在内的标尺增强波伪电势方法。深入研究了超软拟势和感应近似对二阶磁响应的影响。使用有限有机金属体系的基准,与传统的量子化学方法进行比较,显示了49Ti和51V核方法的可靠性和强度。通过与各种钒氧化物基化合物中51V核的实验数据进行比较,验证了其在无限系统中的应用。各向同性化学位移获得的成功协议与对屏蔽张量特征值的充分估计形成对比,与纯交换相关功能相比,其精确交换校正后的类似物受到了限制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号