摘要:
The imidazolato complexes [Cp*Ru(mu-eta (1):eta (1)-Ph2C3HN2)](3), Cp*Ru(eta (5)-Ph2C3HN2), and Cp*Ru(eta (5)-Me2C3HN2) have been prepared and characterized. The Latter complexes represent the first structural documentation of the eta (5)-imidazolato ligand coordination, mode to any metal. [Cp*Ru(mu-eta (1):eta (1)-Ph2C3HN2)](3) converts to Cp*Ru(eta (5)-Ph2C3HN2) upon heating in tetrahydrofuran, demonstrating that the eta (5)-imidazolato ligand is thermodynamically preferred over the mu-eta (1):eta (1)-ligand in the Cp*Ru(II) system.