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Updated: Jan 20, 2026

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Turning on ROP activity in a bimetallic Co/Zn complex supported by a [2+2] Schiff-base macrocycle
Kuiyuan Wang1, Timothy J Prior1, Carl Redshaw1
1Department of Chemistry & Biochemistry, University of Hull, Hull, HU6 7RX, UK. c.redshaw@hull.ac.uk.
Abstract:
Homo-dinuclear Co and Zn complexes derived from the macrocycle LH2, {[2-(OH)-5-(R)-C6H2-1,3-(CH)2][CH2CH2(2-C6H4N)2]}2 (R = Me, tBu), revealed near inactivity for the ring opening polymerization (ROP) of the cyclic esters δ-valerolactone (δ-VL) and ε-caprolactone (ε-CL). By contrast, the hetero-bimetallic complexes [LCo(NCMe)(μ-Br)ZnBr]·nMeCN (n = 3 or 3.25) were found to be efficient catalysts for the ROP of ε-CL and δ-VL.
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