Abstract Vibrational, 13 C NMR, electronic absorption and photoelectron spectra of the complexes W(CO) 5 (4R-Pyridine) are discussed in terms of the influence of variation of R on the transcarbonyl and the extent of π-bonding between tungsten and the pyridine ligand. Enthalpies of reaction are determined for the reaction W(CO) 5 (4R-Py)(s) + CO(g) → W(CO) 6 (g) + 4R-Py(g). The decrease of reaction
摘要从R的变化对反式羰基的影响以及钨与钨之间的π键结合程度的影响,研究了配合物W(CO)5(4R-吡啶)的振动,13 C NMR,电子吸收和光电子能谱。吡啶配体。测定反应的焓W(CO)5(4R-Py)+ CO(g)→W(CO)6(g)+ 4R-Py(g)。从R = CH 3到R = CN时反应焓的降低归因于W吡啶键的弱化。