Hydroxido-supported and carboxylato bridge-driven aggregation for discrete [Ni4] and interconnected [Ni2]n complexes

Chattopadhyay, K., Craig, G. A., Kundu, A., Bertolasi, V., Murrie, M. and Ray, D. (2016) Hydroxido-supported and carboxylato bridge-driven aggregation for discrete [Ni4] and interconnected [Ni2]n complexes. Inorganic Chemistry, 55(20), pp. 10783-10792. (doi: 10.1021/acs.inorgchem.6b02015) (PMID:27684055)

[img]
Preview
Text
129519.pdf - Published Version
Available under License Creative Commons Attribution.

2MB

Abstract

Four different carboxylato bridges have been efficiently utilized for growth of three tetranuclear nickel(II) complexes [Ni4(μ3-H2L)2(μ3-OH)2(μ1,3-CH3CO2)2](ClO4)2 (1), [Ni4(μ3-H2L)2(μ3-OH)2(μ1,3-C2H5CO2)2](ClO4)2·1/2H2O (2), and [Ni4(μ3-H2L)2(μ3-OH)2(μ1,3-O2C-C6H4-pNO2)2](ClO4)(p-NO2-C6H4-CO2)·DMF·5H2O (3) and one dinuclear nickel(II)-based chain complex {[Ni2(μ-H2L)(μ1,3-O2CCH2Ph)2(H2O)](ClO4)·1/2(CH3OH)}n (4). These were obtained via the reaction of Ni(ClO4)2·6H2O with H3L [2,6-bis((2-(2-hydroxyethylamino)ethylimino)methyl)-4-methylphenol] and RCO2Na (R = CH3,C2H5, p-NO2C6H4, and PhCH2). This family of complexes is developed from {Ni2(μ-H2L)}3+ fragments following self-aggregation. The complexes were characterized by X-ray crystallography and magnetic measurements. The changes from acetate, propionate, and p-nitrobenzoate to phenylacetate groups resulted in two different types of coordination aggregation. These compounds are new examples of [Ni4] and [Ni2]n complexes where organization of the building motifs are guided by the type of the carboxylate groups responsible for in-situ generation and utilization of HO– bridges with alteration in the aggregation process within the same ligand environment. Studies on the magnetic behavior of the compounds reveal that the exchange coupling within 1–4 is predominantly antiferromagnetic in nature.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Craig, Dr Gavin and Murrie, Professor Mark
Authors: Chattopadhyay, K., Craig, G. A., Kundu, A., Bertolasi, V., Murrie, M., and Ray, D.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Inorganic Chemistry
Publisher:American Chemical Society
ISSN:0020-1669
ISSN (Online):1520-510X
Published Online:29 September 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Inorganic Chemistry 55(20):10783-10792
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
618561Pressure-tuning interactions in molecule-based magnetsMark MurrieEngineering & Physical Sciences Research Council (EPSRC)EP/K033662/1CHEM - CHEMISTRY