The New Approach of Expansion Baldwin-Aibassov’s Rules for Ring-Closing Reaction for d- and f-elements Periodic Table of Elements

The authors have studied the effect of a magnetic field on Baldwin's rules.The authors have proposed a new mechanism that takes into account the effect of the angle and energy endo-or exo-cyclization.The authors propose to extend the rule Bouldwin not only for sp 3 -, sp 2 -and sp-orbits, but and for d 1 -d 10 and f 1 -f 14 elements of I-VIII of the Periodic table.