Synthesis, Structure, and Solvent‐Induced Spontaneous Homochiral Assembly of Bidentate Bis(N,N′‐diaryl‐N‐heterocyclic carbene)‐Palladium Complexes
Takeshi MakinoHyuma MasuKosuke KatagiriRyu YamasakiIsao AzumayaShinichi Saito
Abstract
Abstract A series of new bidentate bis(N‐heterocyclic carbene)‐palladium complexes 4a – e and 6 with xanthene framework was synthesized. The X‐ray analyses of the complexes revealed that the complexes have conformational chirality. Homochiral crystals of 4a and 6 were obtained by recrystallization from THF or 1,4‐dioxane as solvent. The energy barriers for racemization of the complexes were calculated from dynamic NMR spectroscopy. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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