compounds were prepared by reaction of arylboronic acids with a tridentateligand having the ONO donor set of atoms. It was shown that substituents at the para-position of the B-phenyl moiety transmit electronic effects to the CN bond which in turn is polarized by formation of the N → B coordination bond. At the same time, related tridentateligands were also reacted with 1,4-benzenediboronic acid in order