Predicting the <i>Cis−Trans</i> Dichloro Configuration of Group 15−16 Chelated Ruthenium Olefin Metathesis Complexes: A DFT and Experimental Study
作者:Charles E. Diesendruck、Eyal Tzur、Amos Ben-Asuly、Israel Goldberg、Bernd F. Straub、N. Gabriel Lemcoff
DOI:10.1021/ic901444c
日期:2009.11.16
corrected the disagreement and afforded energies consistent with experimental results. Novel N, Se, and P chelated ruthenium olefin metathesis complexes were synthesized to evaluate calculation predictions. These findings reinforce the importance of including solvent corrections in DFT calculations of ruthenium metathesis catalysts and predict that stronger σ donors as chelating atoms tend to electronically
使用梯度校正(BP86)和混合(M06-L)密度泛函计算研究了顺式和反式-二氯X螯合的亚苄基钌配合物(X = O,S,Se,N,P)的相对稳定性。在气相中计算从实验结果不同,预测所述反-二氯构型在每种情况下都更稳定。添加Poisson-Boltzmann(PBF)连续近似(二氯甲烷)可纠正分歧,并提供与实验结果一致的能量。合成了新型的N,Se和P螯合的钌烯烃复分解配合物,以评估计算预测。这些发现加强了在钌复分解催化剂的DFT计算中包括溶剂校正的重要性,并预言随着螯合原子的作用,更强的σ供体会电子地促进不寻常且活性较低的顺式-二氯构型。