A family of salamo-type trinuclear Co(II) and Ni(II) complexes: Structural characterization, Hirshfeld surface analysis and fluorescent properties

Li, Shizhen; Wei, Yu-Xin; Dong, Wen‐Kui

doi:10.1016/j.poly.2021.115267

Cited by 15 publications

(5 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the free ligand H 3 L, there is a peak appeared at 3,429 cm −1 , which could be assigned to the stretching vibration of phenolic OH groups 53 . Meanwhile, the strong sharp absorption peak for the C═N stretching vibration near 1,622 cm −1 and the peak at around 1,276 cm −1 suggest the presence of the Ar‐O stretching vibration 54…”

Section: Resultsmentioning

confidence: 96%

“…For the free ligand H 3 L, there is a peak appeared at 3,429 cm À1 , which could be assigned to the stretching vibration of phenolic OH groups. 53 Meanwhile, the strong sharp absorption peak for the C═N stretching vibration near 1,622 cm À1 and the peak at around 1,276 cm À1 suggest the presence of the Ar-O stretching vibration. 54 For complexes 1 and 2, the peaks at near 3,442 and 3,432 cm À1 are weaken, and this is due to the Cu (II) atoms are coordinated with the solvent molecules 55 ; that is, the same results of the structure described about X-ray crystal.…”

Section: Ir Spectra Analysesmentioning

confidence: 98%

See 1 more Smart Citation

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Dou

Tong

et al. 2022

Applied Organom Chemis

View full text Add to dashboard Cite

Two helical centrosymmetric homotetranuclear Cu (II) complexes, [Cu 4 (L) 2 (EtOH) 2 ](ClO 4 ) 2 Á2EtOHÁ2CHCl 3 (1) and [{Cu 4 (L) 2 (EtOH) 2 }{Cu 4 (L) 2 (HNO 3 ) 2 }] (NO 3 ) 4 Á3EtOHÁ3MeOH (2), were synthesized by the reactions of a symmetric bis (salamo)-based ligand H 3 L with Cu(ClO) 2 Á6H 2 O and Cu(NO) 3 Á3H 2 O, respectively, and certified by elemental analyses, UV-Visible absorption spectra, infrared spectra and single-crystal X-ray analysis techniques. X-ray crystal structure analyses reveal that four Cu (II) atoms of complex 1 are attached to two deprotonated ligand (L) 3À units with the help of two coordinated ethanol molecules, and then forming a helical centrosymmetric complex by H-bonding and πÁ Á Áπ interactions. While complex 2 unit cell contains two crystallographically independent but chemically identical homotetranuclear complexes (molecules A and B), eight Cu (II) atoms are coordinated by four deprotonated ligand (L) 3À units. The coordination mode of four Cu (II) atoms from molecule A is the same as complex 1; at the same time, oxygen atoms on nitrates are involved in the coordination of another four Cu (II) atoms from molecule B. The short-range interactions in complexes 1 and 2 were calculated by Hirshfeld surfaces analyses. The molecular orbital energy levels, molecular stabilities of complexes 1 and 2 were analyzed by DFT calculations. In addition, antibacterial assays were also investigated in detail.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Ir Spectra Analysesmentioning

confidence: 98%

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Dou

Tong

et al. 2022

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…The IR bands at 1,259 and 1,486 cm À1 for 1 were attributed to the v(C N) and v(C N) vibrations of imidazole rings, respectively. [36][37][38][39][40][41][42] Similar absorption bands of 1,237 cm À1 (C N) and 1,484 cm À1 (C N) also emerge in 2. [43,44] The asymmetric and symmetric stretching vibrations of coordinated carboxylates were observed at 1,578 cm À1 and 1,364 cm À1 for 2.…”

Section: Resultsmentioning

confidence: 99%

Two silver(I) complexes: Synthesis, structures, and electrochemicalH₂O₂sensing

Kong

Shen

Wan

et al. 2022

J Chinese Chemical Soc

View full text Add to dashboard Cite

Two new silver(I) complexes, formulated as [Ag2(L1)2](picrate)2 (1), {[Ag2(L2)2(terephthalate)](C2H5OH)3(H2O)}n (2) (L1 = 1,3‐bis(2‐benzimidazyl)benzene, L2 = 1,3‐bis(1‐methylbenzimidazol‐2‐yl)‐2‐thiapropane), were synthesized and characterized by X‐ray crystallography, elemental analysis, infrared, and UV–Vis spectroscopy. The crystal analysis results showed that the complexes exhibited different structures: binuclear for 1 and one‐dimensional polymeric for 2. Their Ag(I) centers displayed different coordination geometric structures: two‐coordinated linear in 1, whereas four‐coordinated distorted tetrahedron in 2. The electrochemical sensing performance of Ag(I) complexes modified carbon paste electrode (CPE‐1 and CPE‐2) toward hydrogen peroxide (H2O2) was evaluated by chronoamperometry in 0.2 M phosphate buffer saline (pH = 6) at −0.2 V. The CPE‐1 was found to have a wide linear response from 1.0 × 10−5 to 4.0 × 10−3 M, lower detection limit of 1.73 μM, excellent anti‐interference ability, and stability. The CPE‐2 does not have recognition properties for H2O2, which may be due to the large steric hindrance around Ag(I) centers that is not easy to combine with H2O2 to form a catalytic transition state. The above studies proved that Ag(I) complexes can be used as effective components of electrode materials for the electrochemical recognition of H2O2.

show abstract

“…[40,41] The IR bands at 1236 and 1480 cm À1 for complex 1 were attributed to the v(C-N) and v(C=N) vibrations of imidazole rings, respectively. [42][43][44][45][46][47][48] Similar absorption bands of 1206 cm À1 (C-N) and 1439 cm À1 (C=N) also appears in complex 2. [49][50][51][52][53] The electronic spectra of complex 1 and 2 were recorded in DMF solution at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures, and electrochemical sensing toward hydrogen peroxide

Sun

Dong

et al. 2022

Applied Organom Chemis

View full text Add to dashboard Cite

Two new silver(I) complexes, formulated as [Ag2L12(isophthalate)]·(C2H5OH)5 (1), [Ag2L22(isophthalate)] (2) (L1 = 1,3‐bis[(N‐methyl‐benzimidazole)methylene]‐2‐aniline, L2 = 1,3‐bis[(N‐ethyl‐benzimidazole)methylene]‐2‐aniline), were synthesized by volatilization method and characterized by X‐ray crystallography, elemental analysis, IR and UV/Vis spectroscopy. The crystal analysis showed that although complexes 1 and 2 were both binuclear, their Ag(I) centers exhibited different coordination geometric structures: four‐coordinated distorted tetrahedron in complex 1, whereas three‐coordinated planar triangle in complex 2. The electrochemical sensing performances of carbon paste electrode modified with Ag(I) complexes (CPE‐1 for complex 1 and CPE‐2 for complex 2) toward H2O2 were evaluated by cyclic voltammogram and chronoamperometry in 0.2 M phosphate‐buffered saline (PBS, pH = 6.0) at −0.2 V. The results show that both CPE‐1 and CPE‐2 showed excellent electrocatalytic activity, quick response time (≤5 s) and high selectivity toward H2O2. The linear response range was from 5.0 × 10−7 to 4.0 × 10−3 M. The CPE‐1 exhibits better sensitivity and limit of detection (LOD) than CPE‐2, which is related to the coordination environment of Ag(I) ions. Sensors based on Ag(I) complexes have great application prospects in the field of electrochemical sensing.

show abstract

A family of salamo-type trinuclear Co(II) and Ni(II) complexes: Structural characterization, Hirshfeld surface analysis and fluorescent properties

Cited by 15 publications

References 65 publications

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Two silver(I) complexes: Synthesis, structures, and electrochemicalH₂O₂sensing

Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures, and electrochemical sensing toward hydrogen peroxide

Contact Info

Product

Resources

About

A family of salamo-type trinuclear Co(II) and Ni(II) complexes: Structural characterization, Hirshfeld surface analysis and fluorescent properties

Cited by 15 publications

References 65 publications

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Exploring two helical centrosymmetric homotetranuclear Cu (II) bis (salamo)‐based complexes

Two silver(I) complexes: Synthesis, structures, and electrochemicalH2O2sensing

Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures, and electrochemical sensing toward hydrogen peroxide

Contact Info

Product

Resources

About

Two silver(I) complexes: Synthesis, structures, and electrochemicalH₂O₂sensing