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Abstract:
Four types of palladium(II)-based cup-shaped structures as structural analogues of [M3L3](3+)-type metallacalix[3 ] arene, [M2L](2+)-type semimetallacalix[4]arene, [M2L2](4+)-type metallacalix[4]arene, and [M3L3](6+)-type metallacalix[6]arene have been designed and synthesized via coordination-driven self-assembly using two types of imidazole-and dithiophene-containing ligands, [4,5-bis(2,5-dimethylthiophen-3-yl)-1H-imidazole (HL1) and bis(4,5-bis(2,5-dime-thylthiophen-3-yl)-1H-imidazol-1-yl)methane (L-2)], with four types of palladium-(II) nitrate precursors, (bpy)Pd(NO3)(2) (M-1-NO3), (tmen)Pd(NO3)(2) (M-2-NO3), (en)Pd(NO3)(2) (M-3-NO3), and Pd(NO3)(2) (M-4-NO3) (bpy = 2,2'-bipyridine; tmen = tetramethylethylenediamine; en = ethylenediamine). The difference in the imidazolate ligands and palladium(II) nitrate precursors in each complex brings about the variety of the structures and ion-encapsulating characteristics of the obtainable cavities in all the complexes. The fascinating multidimensional 2-D and 3-D highly ordered supramolecular configurations with metallacalixarenes as building blocks were constructed via pi-pi stacking and multiple hydrogen bonding. Furthermore, this successful strategy provides an insight into the construction of other more intricate structural analogues of metallacalixarenes and the chemistry in crystal engineering.
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CRYSTAL GROWTH & DESIGN
ISSN: 1528-7483
Year: 2022
Issue: 6
Volume: 22
Page: 3740-3752
3 . 8
JCR@2022
3 . 8 0 0
JCR@2022
ESI Discipline: CHEMISTRY;
ESI HC Threshold:53
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 1
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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