The reactions of intramolecularly coordinated organoantimony and organobismuth dihalides (LSbCl2)-Sb-1 and (LBiCl2)-Bi-2, containing two types of O,C,O-pincer ligands 2,6-(ROCH2)C6H3- (L-1, R = Me; L-2, R = Bu-t), with silver salts of the weakly nucleoph