A novel heterobimetallic rotation system: characterization of palladium(II) complexes with 2-pyridylethylferrocenecarboxamides
摘要:
2-(4-Pyridyl)ethylferrocenecarboxamide (4-PEFA) and 2-(2-pyridyl)ethylferrocenecarboxamide (2-PEFA) served as monodentate ligands to form the corresponding 2:1 trans-complexes with PdCl2(MeCN)(2). The rotational barrier of the two pyridyl rings in PdCl2(2-PEFA)(2) was 14.9 kcal mol(-1), being in sharp contrast to the free rotation of PdCl2(4-PEFA)(2) above 25 degrees C. These complexes provide examples for heterobimetallic rotation systems.
A novel heterobimetallic rotation system: characterization of palladium(II) complexes with 2-pyridylethylferrocenecarboxamides
摘要:
2-(4-Pyridyl)ethylferrocenecarboxamide (4-PEFA) and 2-(2-pyridyl)ethylferrocenecarboxamide (2-PEFA) served as monodentate ligands to form the corresponding 2:1 trans-complexes with PdCl2(MeCN)(2). The rotational barrier of the two pyridyl rings in PdCl2(2-PEFA)(2) was 14.9 kcal mol(-1), being in sharp contrast to the free rotation of PdCl2(4-PEFA)(2) above 25 degrees C. These complexes provide examples for heterobimetallic rotation systems.