Abstract
| Language | English |
|---|---|
| Pages | 325-331 |
| Journal | Journal of Organometallic Chemistry |
| Volume | 848 |
| Early online date | 24 Aug 2017 |
| DOIs | |
| Status | Published - 15 Oct 2017 |
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Synthesis of Li(I), Zn(II) and Mg(II) complexes of amine bis(phenolates) and their exploitation for the ring opening polymerisation of rac-lactide. / Quilter, Helena; Drewitt, Rachel; Mahon, Mary; Kociok-Kohn, Gabriele; Jones, Matthew.
In: Journal of Organometallic Chemistry, Vol. 848, 15.10.2017, p. 325-331.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of Li(I), Zn(II) and Mg(II) complexes of amine bis(phenolates) and their exploitation for the ring opening polymerisation of rac-lactide
AU - Quilter,Helena
AU - Drewitt,Rachel
AU - Mahon,Mary
AU - Kociok-Kohn,Gabriele
AU - Jones,Matthew
PY - 2017/10/15
Y1 - 2017/10/15
N2 - In this paper a series of Mg(II), Li(I) and Zn(II) complexes based on two families of amine bis(phenolate)s have been prepared and structurally characterised. In the solid-state the Li(I) complexes form common Li4O4 cubes and there are subtle differences in coordination mode between the two salan ligands employed. We also have prepared a Li3Mg1O4 cube structure, by the reaction of 1 eq. of ligand 2H2, with 1 eq. of both nBuLi and MgnBu2. Upon addition of the ligands with Zn(II) either a trimetallic or tetrametallic structure was isolated. With 2H2 a complex with an –OMe was observed, this arises from the insertion of oxygen into the Zn-Me bond. Upon reaction with MgnBu2 dimeric complexes were isolated. All complexes were tested for the ROP of rac-lactide in solution. High molecular weight polylactide was isolated with narrow molecular weight distributions being observed. In most cases PLA with a very slight heterotactic bias was formed.
AB - In this paper a series of Mg(II), Li(I) and Zn(II) complexes based on two families of amine bis(phenolate)s have been prepared and structurally characterised. In the solid-state the Li(I) complexes form common Li4O4 cubes and there are subtle differences in coordination mode between the two salan ligands employed. We also have prepared a Li3Mg1O4 cube structure, by the reaction of 1 eq. of ligand 2H2, with 1 eq. of both nBuLi and MgnBu2. Upon addition of the ligands with Zn(II) either a trimetallic or tetrametallic structure was isolated. With 2H2 a complex with an –OMe was observed, this arises from the insertion of oxygen into the Zn-Me bond. Upon reaction with MgnBu2 dimeric complexes were isolated. All complexes were tested for the ROP of rac-lactide in solution. High molecular weight polylactide was isolated with narrow molecular weight distributions being observed. In most cases PLA with a very slight heterotactic bias was formed.
UR - https://doi.org/10.1016/j.jorganchem.2017.08.014
U2 - 10.1016/j.jorganchem.2017.08.014
DO - 10.1016/j.jorganchem.2017.08.014
M3 - Article
VL - 848
SP - 325
EP - 331
JO - Journal of Organometallic Chemistry
T2 - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
SN - 0022-328X
ER -