Kyuong Seop Kwon, S. Nayab, J. Jeong
Jan 8, 2015
Citations
1
Influential Citations
27
Citations
Journal
Polyhedron
Abstract
Two dichlorozinc complexes, (CIP)ZnCl 2 and (CIPMe)ZnCl 2 where CIP is ( E )-1-(pyridin-2-yl)- N -(1,7,7-trimethylbicyclo[2.2.1]heptan-2-ylidene)methanamine and CIPMe is ( E )-1-(6-methylpyridin-2-yl)- N -(1,7,7-trimethylbicyclo[2.2.1]heptan-2-ylidene)methanamine, were synthesised and characterised using X-ray diffraction. The coordination geometry around the four-coordinated zinc centres in these mononuclear complexes could be best described as distorted tetrahedral. Diisopropoxide derivatives of these complexes, generated in situ , efficiently initiated the ring-opening polymerisation (ROP) of rac -lactide ( rac -LA). These metal initiators showed a preference for heterotactic polylactide (PLA), with a P r value of 0.80 at −25 °C.