报道了铬和五羰基钨与4-甲基和4-苯基-1,2,4-三唑的配合物的合成。这些配合物的紫外光谱中最低能量吸收的性质已经过检验,并显示出主要是配体场带。通过红外和1 H核磁共振波谱显示,三唑起单齿配体的作用。这些化合物在1 H NMR中显示出强烈的溶剂依赖性,这些作用可以通过溶剂-溶质相互作用来解释。还检查了W(CO)5(4-苯基-1,2,4-三唑)1 H NMR光谱的温度依赖性。
Application of time-resolved photoacoustic calorimetry to CrL bond enthalpies in Cr(CO)5L
作者:Gilbert K. Yang、Veronica Vaida、Kevin S. Peters
DOI:10.1016/s0277-5387(00)81787-8
日期:1988.1
Using time-resolved photoacousticcalorimetry, the CrL bond enthalpies in Cr(CO)5L for a variety of ligands have been measured. Also, the enthalpy and entropy of activation for the displacement of heptane in Cr(CO)5(heptane) by pyridine and 2-picoline have been determined.
Strength of the metal-ligand bond in LCr(CO)5 measured by photoacoustic calorimetry
作者:Gilbert K. Yang、Kevin S. Peters、Veronica Vaida
DOI:10.1016/0009-2614(86)87100-7
日期:1986.4
The Cr-L bondstrengths for Cr(CO)5L in heptane have been determined using photoacousticcalorimetry. For L = CO, PBu3, CH3CN and THF, ΔHBDE = 27.0, 21.6, 18.2, 12.4 respectively. Comparison of the Cr-CO bond dissociation energies in the gas phase and in heptane solution suggests a 10 stabilization of Cr(CO)5 by coordinated heptane.