Photoreactive Crystal of a Copper(I) Coordination Compound with a Cinnamaldehyde Derivative

Ganczar, Emilia; Gawryszewska, Paula; Kinzhybalo, Vasyl; Białońska, Agata

doi:10.1021/acs.cgd.1c00955

Cited by 3 publications

(1 citation statement)

References 66 publications

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“…Enhanced absorption peaks for 1- S / R , 2- S / R and 3- S / R were observed in the range of 200–400 nm, and the intense high-energy band at 246 nm was attributed to π→π* intra-ligand charge transfer transitions (ILCT) [ 35 , 36 ]. The corresponding absorption peaks of complexes at 365 nm were strongly enhanced compared to that of NaHL , which was attributed to ligand to metal charge transfer (LMCT) transitions by strong interactions between metal ions and ligands [ 37 , 38 , 39 , 40 ]. This is consistent with X-ray diffraction crystallographic structures of those complexes.…”

Section: Resultsmentioning

confidence: 99%

Preferential Enrichment of Enantiomer from Amino Acid Schiff Bases by Coordination Interaction and Crystallization

Zhong

et al. 2023

Materials

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In this paper, preferential enrichment (PE) is described for three pairs of novel amino acid Schiff base Cu(II)/Cu(I) complexes. Single crystal X-ray diffraction indicated that 1-S/R are one-dimensional coordination polymers (CPs) with helical structures, and 2-S/R and 3-S/R are one-dimensional CPs with auxiliary ligands. By tuning the pH, the solvent and second ligands, the 1-S/R, 3-S/R underwent polymorphic transitions, resulting in enantioselective liberation of excess enantiomers into solution, until the deposited crystals were slightly enriched with the opposite enantiomer, thereby successfully exhibiting PE. However, under the effects of Cu(II), the solvent and low pH, 2-S/R did not exhibit PE and resulted in enrichment of racemic compounds, which was attributed to amino acid Schiff base chiral complex mechanisms of PE. The three pairs of Cu complex structures were characterized by UV-vis, MS and X-ray photoelectron spectroscopy (XPS). All chiral properties were studied by circular dichroism (CD) in the solid and liquid.

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Section: Resultsmentioning

confidence: 99%

Preferential Enrichment of Enantiomer from Amino Acid Schiff Bases by Coordination Interaction and Crystallization

Zhong

et al. 2023

Materials

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Photochemistry of aromatic compounds (2019–2020)

Mizuno¹

2022

Photochemistry

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This chapter includes a large selection of photochemical reactions involving aromatic compounds, including, among others, photoisomerization, photoaddition and photocycloaddition, photodimerization, intramolecular photocyclization, photosubstitution, photo-reduction and photo-oxidation, photorearrangement reactions of aromatic compounds and related photoreactions published in the 2019–2020 period.

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Bromine versus chlorine substituent in breathing crystals of a copper(I) coordination compound with a triazolamine Schiff base

Ganczar,

Białońska

2023

Acta Crystallogr Sect B

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It is known that N-[4-(chlorobenzylidene)-4H-1,2,4-triazol-4-amine in reaction with copper(I) perchlorate(VII) forms metastable breathing crystals built up of X-shaped binuclear units containing copper(I) ions in a trigonal coordination sphere. Using trifluoromethanesulfonate instead of perchlorate(VII) affects the self-assembly of the X-shaped units and the breathing function of the resulting crystals. The latter are not breathing crystals. Copper(I) trifluoromethanesulfonate with N-[4-(bromobenzylidene)-4H-1,2,4-triazol-4-amine crystallizes in two forms: open (with the presence of 1D channels) and closed (without 1D channels). Both are characterized by the presence of X-shaped binuclear cationic units and the trigonal coordination sphere of copper(I) ions. The open form has the ability to engage in reversible sorption. The desorption process is associated with the large reorientation of the binuclear units and the reorganization of the intermolecular interactions leading to the closure of the channels. The post-synthetically obtained channel-less form differs from the channel-less form obtained by direct crystallization, the latter being incapable of sorption. The mechanism of the desorption process of the open form is governed by the general principle of dense packing, and the main reason for the sorption process is the formation of directional halogen–halogen interactions. The halogen atom in the para position of the ligands influences the formation of different crystalline forms and also a different mechanism for the desorption process.

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Photoreactive Crystal of a Copper(I) Coordination Compound with a Cinnamaldehyde Derivative

Cited by 3 publications

References 66 publications

Preferential Enrichment of Enantiomer from Amino Acid Schiff Bases by Coordination Interaction and Crystallization

Preferential Enrichment of Enantiomer from Amino Acid Schiff Bases by Coordination Interaction and Crystallization

Photochemistry of aromatic compounds (2019–2020)

Bromine versus chlorine substituent in breathing crystals of a copper(I) coordination compound with a triazolamine Schiff base

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