Chromium-53 nuclear magnetic resonance studies of pentacarbonylchromium carbene complexes
作者:Andreas. Hafner、Louis S. Hegedus、Guy. DeWeck、Bruce. Hawkins、Karl H. Doetz
DOI:10.1021/ja00233a018
日期:1988.12
The sup 53}Cr NMR spectra of 46 chromium-carbene complexes were recorded, and chemical shift and line width data are reported, along with associated infrared, uv-visible, and sup 13}C NMR spectroscopic data. The sup 53}Cr chemical shifts correlated very well with the donor-acceptor properties of the carbene ligand and were quite sensitive to steric influences on efficiency of pi}-overlap of the
记录了 46 种铬-卡宾配合物的 sup 53}Cr NMR 光谱,并报告了化学位移和线宽数据,以及相关的红外、紫外可见和 sup 13}C NMR 光谱数据。sup 53}Cr 化学位移与卡宾配体的供体-受体性质非常相关,并且对杂原子与卡宾碳的 pi} 重叠效率的空间影响非常敏感。delta}(sup 53}Cr) 与亚胺形成β}-内酰胺的反应性没有相关性,但线宽似乎与反应性有关。初步尝试利用sup 53}Cr NMR 数据来指导铬-卡宾配合物的合成利用。5 个参考文献,49 个图,1 个标签。