TY - JOUR
T1 - Three Manganese Complexes of Anionic N4-Donor Schiff-Base Macrocycles
T2 - Monomeric MnII and MnIII, and dimeric MnIV
AU - Wilson, Rajni K.
AU - Dhers, Sébastien
AU - Sproules, Stephen
AU - McInnes, Eric J.L.
AU - Brooker, Sally
PY - 2019
Y1 - 2019
N2 - Three manganese macrocyclic complexes of two anionic N4-donor [1 + 1] Schiff-base macrocycles that differ in ring size (14 versus 16 membered), HLEt and HLPr (obtained from condensation of diphenylamine-2,2′-dicarboxaldehyde and either diethylenetriamine or dipropylenetriamine), are reported. Specifically, a pair of monomeric complexes MnIILEt(NCS)(H2O) and [MnIIILPr(NCS)2]·0.5H2O, plus a dimeric complex [MnIV2LEt2(O)2](ClO4)2·3DMF have been synthesised and characterised. Single crystal structure determinations on [MnIIILPr(NCS)2]·0.5H2O and [MnIV2LEt2(O)2](ClO4)2·3DMF revealed octahedral manganese centres in both cases: N6-coordinated Jahn-Teller distorted MnIII in the former and a pair of N4O2-coordinated MnIV in the latter. UV-Vis, IR, and electron paramagnetic resonance spectroscopy as well as magnetic measurements are reported. These macrocyclic complexes feature a simple and original design, and could find future uses as models for manganese catalase or as building blocks for the assembly of larger supramolecular architectures.
AB - Three manganese macrocyclic complexes of two anionic N4-donor [1 + 1] Schiff-base macrocycles that differ in ring size (14 versus 16 membered), HLEt and HLPr (obtained from condensation of diphenylamine-2,2′-dicarboxaldehyde and either diethylenetriamine or dipropylenetriamine), are reported. Specifically, a pair of monomeric complexes MnIILEt(NCS)(H2O) and [MnIIILPr(NCS)2]·0.5H2O, plus a dimeric complex [MnIV2LEt2(O)2](ClO4)2·3DMF have been synthesised and characterised. Single crystal structure determinations on [MnIIILPr(NCS)2]·0.5H2O and [MnIV2LEt2(O)2](ClO4)2·3DMF revealed octahedral manganese centres in both cases: N6-coordinated Jahn-Teller distorted MnIII in the former and a pair of N4O2-coordinated MnIV in the latter. UV-Vis, IR, and electron paramagnetic resonance spectroscopy as well as magnetic measurements are reported. These macrocyclic complexes feature a simple and original design, and could find future uses as models for manganese catalase or as building blocks for the assembly of larger supramolecular architectures.
UR - http://www.scopus.com/inward/record.url?scp=85069907066&partnerID=8YFLogxK
U2 - 10.1071/CH19209
DO - 10.1071/CH19209
M3 - Article
AN - SCOPUS:85069907066
SN - 0004-9425
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
ER -