The synthesis, structure, and spectral properties of antimony(III) phthalocyanine obtained under iodine vapor atmosphere: (SbIIIPc)(I3) ½(I2)

Janczak, Jan

doi:10.1016/j.ica.2021.120758

Cited by 1 publication

(2 citation statements)

References 104 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the solution after oxidation of (Sb III Pc) + with D 4v symmetry by H 2 O 2, the [Sb V Pc(OH) 2 ] + complex with OH groups in the trans positions with approximately D 4h symmetry is formed. A quite similar correlation between the Q bands was observed during the oxidation of the complex (SbPc)(I 3 )∙½I 2 [ 68 ]. This Sb(V)–phthalocyanine complex, [Sb V Pc(OH) 2 ] + , was also suggested by Knӧr [ 15 ], who studied the oxidation of (Sb III Pc)F by hydrogen peroxide in an ethanol solution.…”

Section: Resultssupporting

confidence: 61%

“…The variable valency of these metals depending on the reaction conditions (III or V) can lead to the formation of various MPc derivatives. SbPc derivatives can be promising candidates for new drugs because they are stable, powerful electron donors/acceptors [ 65 , 66 ], and some derivatives undergo facile Sb III /Sb V conversion under mild conditions [ 67 , 68 ]. Their use as drugs requires further research on their biocompatibility and effectiveness as well as their toxicity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, Structure, and UV–Vis Characterization of Antimony(III) Phthalocyanine: [(SbPc)2(Sb2I8)(SbBr3)]2

Kubiak

Janczak

2022

Molecules

Self Cite

View full text Add to dashboard Cite

A new antimony(III)–phthalocyanine complex with the formula of [(SbPc)2(Sb2I8)(SbBr3)]2 has been obtained in the reaction of pure antimony powder with phthalonitrile under the oxidation conditions by iodine monobromide vapors. The complex crystallizes in the centrosymmetric space group of the triclinic system. Both independent (SbPc)+ units exhibit non-planar conformation, since the Sb(III) is larger than the equilibrium cavity size of the ring and cannot be accommodated without its expansion; thus, the metal protrudes out of the cavity, forming a saucer shape. The centrosymmetric anionic unit of the crystal consists of two (Sb2I8)2− interacted anionic units forming (Sb4I16)4− anionic complex that interacts with two SbBr3 molecules to form [Sb6I16Br6]4− anionic aggregate. Each [Sb6I16Br6]4− anionic aggregate is surrounded by four (SbPc)+ cations forming a supramolecular centrosymmetric (SbPc)4[Sb6I16Br6] complex. Translationally related (SbPc)4[Sb6I16Br6] molecules form a stacking structure along the [100] and [011] directions with N4–N4 distances of 3.55 and 3.53 Å, respectively, between the back-to-back-oriented saucer-shaped (SbPc)+ units. The interaction between the building units of the crystal was analyzed using the Hirshfeld surface and the analysis of the 2D fingerprint plots. The UV–Vis absorption spectra of crystal 1 were taken in CH2Cl2 and toluene solutions in the concentration range from 10−5 to 10−6 mol/L. No significant changes related to aggregation in solutions were observed. The Q-band in toluene solution is red shifted by ~15 nm in comparison to that in CH2Cl2 solution. Oxidation of (SbPc)4[Sb6I16Br6] yields SbVPc derivative. Both SbIII and SbV phthalocyanine derivatives absorb near infrared light (600–900 nm), which should be intriguing from the point of view of potential use as photosensitizers for PDT and as an infrared cut filter for plasma display and silicon photodiodes.

show abstract

Section: Resultssupporting

confidence: 61%