In:
CrystEngComm, Royal Society of Chemistry (RSC), Vol. 25, No. 1 ( 2023), p. 114-121
Abstract:
The assembly studies of high-nuclear clusters have received much interest in recent years due to their targeted synthesis for some special usages. A Schiff base ligand 2-[ N -(2-hydroxynaphthylidene)amino]-2-(hydroxymethyl)propane-1,3-diol (H 4 L) was thus prepared in this work and was allowed to react with [Cu 2 (OAc) 4 (H 2 O) 2 ] and Dy(NO) 3 ·6H 2 O, giving a high-nuclear 3d–4f heterometallic Cu 12 Dy 14 nanocluster (1) with the formula [(C 2 H 5 ) 3 NH] 4 [Cu 12 Dy 14 O(OH) 16 (H 2 L) 8 (HL) 4 (HL′) 4 (OAc) 10 ](NO 3 ) 4 (OAc) 2 ·6CH 3 CN·5EtOH·1.5H 2 O (H 3 L′ = 1,1,1-tris-(hydroxymethyl)methanamine). It features a centipede-shaped structure constructed from eight Dy 3 Cu cubanes sharing the Dy( iii ) vertices. Its assembly mechanism was explored through time-dependent high-resolution electrospray ionization mass spectrometry (HRESI-MS). This revealed that the hierarchical assembly of 1 undergoes two possible routes: H 4 L → DyCuL → Dy 2 CuL → Dy 3 Cu 2 L 2 → Dy 4 Cu 2 L 2 → Dy 4 Cu 3 L 3 → Dy 5 Cu 4 L 4 → Dy 14 Cu 12 L 12 L′ 4 and H 4 L → DyCuL → DyCu 2 L → Dy 2 Cu 2 L 2 → Dy 2 Cu 3 L 4 → Dy 3 Cu 4 L 4 → Dy 5 Cu 4 L 4 → Dy 14 Cu 12 L 12 L′ 4 . These results not only provide solid evidence for understanding the assembly mechanism of high-nuclear 3d–4f clusters, but also help to give some hints for designing and preparing new high-nuclear clusters.
Type of Medium:
Online Resource
ISSN:
1466-8033
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2025075-7
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