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Fine-Tuning of Boron Complexes with Cage-Shaped Ligand Geometry:  Rational Design of Triphenolic Ligand as a Template for Structure Control

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posted on 06.03.2008, 00:00 by Makoto Yasuda, Sachiko Yoshioka, Hideto Nakajima, Kouji Chiba, Akio Baba
Boron complexes surrounded with organic cages were controlled precisely by a remote atom placed at the bottom of the cage. A replacement of the bottom tether atom (carbon or silicon) changed the characteristics (kinetic and thermodynamic factors) of boron complexes by geometric effects. A theoretical study shows that the bottom atoms also control eigenvalues of MO. This cage complex will provide a systematic template for fine-tuning of metal complexes to create various properties.