Solvothermal synthesis of enneanuclear [CuII7LnIII2] clusters

Canaj, A. B. , Tzimopoulos, D. I., Otręba, M., Lis, T., Inglis, R. and Milios, C. J. (2015) Solvothermal synthesis of enneanuclear [CuII7LnIII2] clusters. Dalton Transactions, 44(46), pp. 19880-19885. (doi: 10.1039/C5DT03542B)

Abstract

Employment of H3L (= 2-(β-naphthalideneamino)-2-hydroxymethyl-1-propanol) in mixed-metal copper-lanthanide cluster chemistry has led to the isolation of four new enneanuclear heteronuclear isostructural [CuII7LnIII2] complexes. More specifically, the solvothermal reaction of Cu2(OAc)4·2H2O with H3L and the corresponding lanthanide nitrate salt in MeCN in the presence of a base, NEt3, yielded three complexes with the general formula [CuII7LnIII2(L)4(HL)2(OAc)4]·2MeCN (Ln: Gd, 1·2MeCN; Tb, 2·2MeCN; Dy, 3·2MeCN), while in addition the YIII analogue, [CuII7YIII2(L)4(HL)2(OAc)4]·2MeCN (4·2MeCN), was also synthesized in the same manner. The structure of the cluster describes two corner-sharing [Cu3Ln] cubane metallic units, each one further connected to one CuII ion. Dc magnetic susceptibility studies in the 5–300 K range for complexes 1–4 reveal the presence of both ferromagnetic and antiferromagnetic exchange interactions within the metallic clusters.

• Item Type: Articles
• Additional Information: This work was supported by the ARISTEIA Action (Project code 84, acronym MAGCLOPT) of the Operational Programme “Education and Lifelong Learning”, co-funded by ESF and National Resources.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Tsanai, Dr Angelos
• Authors: Canaj, A. B., Tzimopoulos, D. I., Otręba, M., Lis, T., Inglis, R., and Milios, C. J.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Dalton Transactions
• Publisher: Royal Society of Chemistry
• ISSN: 1477-9226
• ISSN (Online): 1477-9234
• Published Online: 13 October 2015