In:
Dalton Transactions, Royal Society of Chemistry (RSC), Vol. 51, No. 16 ( 2022), p. 6358-6365
Kurzfassung:
Reactions of [Et 4 N][Tp*WS 3 (CuCl) 3 ] (1) (Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate) with 2 equiv. of AgOTf (OTf − = trifluoromethanesulfonate) and 1 equiv. of several bidentate pyridine ligands including 2,5-bis(pyridine-4-yl)thiazolo[5,4-d]thiazole (L1), 2,7-di(pyridin-4-yl)-9 H -fluorene (L2), 2,7-di(pyridin-4-yl)-9 H -carbazole (L3), and 2,7-di(pyridin-4-yl)-9 H -fluoren-9-one (L4) afforded four W/Cu/S cluster-based supramolecular compounds [(Tp*WS 3 Cu 2 Cl) 2 (L1)] (2), {[(Tp*WS 3 Cu 3 ) 2 (μ-Cl) 2 (μ 4 -Cl)] 2 (L2) 2 }(OTf) 2 (3), {[(Tp*WS 3 Cu 3 ) 2 (μ-Cl) 2 (μ 4 -Cl)] 2 (L3) 2 }(OTf) 2 (4) and {[(Tp*WS 3 Cu 3 ) 2 (μ-Cl) 2 (μ4-Cl)] 2 (L4) 2 }(OTf) 2 (5). Compounds 2–5 were characterized by elemental analysis, IR, UV-vis, 1 H NMR, and single-crystal X-ray diffraction analysis. The neutral cluster 2 behaves as a supramolecular wire constructed by L1 bridging two butterfly-shaped [Tp*WS 3 Cu 2 Cl] cores. The cluster cations of 3–5 contain two [(Tp*WS 3 Cu 3 ) 2 (μ-Cl) 2 (μ 4 -Cl)] + cores linked by two L2, L3, or L4 ligands, which finally formed a cationic supramolecular rectangle. The third-order nonlinear-optical (NLO) properties of 3–5 in DMF were also investigated by Z -scan techniques and their NLO responses were enhanced compared to those of their precursor 1.
Materialart:
Online-Ressource
ISSN:
1477-9226
,
1477-9234
Sprache:
Englisch
Verlag:
Royal Society of Chemistry (RSC)
Publikationsdatum:
2022
ZDB Id:
1472887-4
