We report a detailed structural study of[Ln(AAZTA)]^(-)complexes by using a combination of experimental and theoretical tools.The analysis of the^(1)H NMR paramagnetic shift of the methyl peak across the series sugges...We report a detailed structural study of[Ln(AAZTA)]^(-)complexes by using a combination of experimental and theoretical tools.The analysis of the^(1)H NMR paramagnetic shift of the methyl peak across the series suggests that a structural change occurs between Ho and Er.Chemical exchange saturation transfer experiments were subsequently used to determine the number of coordinated water molecules and their corresponding exchange rates k_(ex)at 278 K.展开更多
基金C.P.-I.and D.E.-G.thank Ministerio de Economía y Competitividad(CTQ2016-76756-P)Xunta de Galicia(ED431B 2017/59 and ED431D 2017/01)for generous financial support and Centro de Supercomputación de Galicia(CESGA)for providing the computer facilities+2 种基金The research was also supported by the EU and co-financed by the European Regional Development Fund under the projects GINOP-2.3.2-15-2016-00008 and GINOP-2.3.3-15-2016-00004L.T.and M.B.acknowledge the financial support from Universitàdel Piemonte Orientale(Ricerca locale 2019)The work was carried out within the framework of the COST CA15209 Action‘European Network on NMR Relaxometry’.
文摘We report a detailed structural study of[Ln(AAZTA)]^(-)complexes by using a combination of experimental and theoretical tools.The analysis of the^(1)H NMR paramagnetic shift of the methyl peak across the series suggests that a structural change occurs between Ho and Er.Chemical exchange saturation transfer experiments were subsequently used to determine the number of coordinated water molecules and their corresponding exchange rates k_(ex)at 278 K.
