Doubly Reduced Phthalocyanine Complexes of V(IV), Cu(II), and Sn(II): Synthesis, Structure, and Spin Dynamics

Maxim A. Faraonov; Romanenko N.; Ivanov T.; Shmakov A.; Akimov A.; Aleksandr V.; Khasanov S.; Otsuka A.; Kitagawa H.; Konarev D.

doi:10.1039/d6dt00887a

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Doubly Reduced Phthalocyanine Complexes of V(IV), Cu(II), and Sn(II): Synthesis, Structure, and Spin Dynamics

Dalton Transactions. 2026. Vol. 55. No. 24. P. 9428–9438.

Maxim A. Faraonov, Romanenko N., Ivanov T., Shmakov A., Akimov A., Aleksandr V., Khasanov S., Otsuka A., Kitagawa H., Konarev D.

Doubly reduced phthalocyanine complexes remain largely unexplored despite their potential relevance for molecular spin-based applications. Herein, we report the synthesis of a series of crystalline complexes, {cryptand(Cs + )} 2 [M(Pc) 4– ] 2–.

Research target: Chemistry

Keywords: phthalocyanine металлофталоцианин

When universal machine learning models fail in capacitance prediction for carbon-based supercapacitors: Leakage-aware validation and electrolyte screening

Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159

Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors; however, most published models assume that a single predictive framework can describe both conventional porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related descriptors. Three ML algorithms ...

Added: October 13, 2026

Electrochemical reduction of cyanide on conjugated copper-organic framework Cu3(HHTP)2 monolayer: A dispersion-corrected DFT investigation.

Shi R., Yu Y., Chibisov A., International Journal of Hydrogen Energy 2025 Vol. 107 P. 52–62

Cyanide containing wastewater can cause livestock death and reduce agricultural production and electrochemical reduction of cyanide (CNRR) is a promising way to eliminate its harm and turn waste into valuable products. However, the reaction mechanism and function of electrocatalysts for CNRR have not been fully understood yet. Herein we identify a two-dimensional (2D) conductive copper-organic ...

Added: October 11, 2026

Advances in colloidal anisotropic nanocrystals for high-efficiency light-emitting diodes

Zhukov A., Chen F., Zeng Y. et al., Nanoscale 2026 Vol. 18 No. 36 P. 19223–19253

Colloidal semiconductor nanocrystals have emerged as promising materials for next-generation light-emitting diodes (LEDs) owing to their solution processability, tunable emission wavelengths, narrow emission linewidths, and high photoluminescence quantum yields. Among them, anisotropic nanocrystals, including one-dimensional nanorods (NRs) and two-dimensional nanoplatelets (NPLs), offer additional opportunities for controlling transition dipole moment orientation and light out-coupling efficiency. These ...

Added: October 2, 2026

Effect of the hydrogen bond donor nature on the extraction ability of a tributyl phosphate-based deep eutectic solvent

Мальцева В. Е., Ananyev I., Milevskii N. et al., Molecular Systems Design and Engineering 2026 Vol. 11 No. 7 P. 691–704

The use of hydrophobic deep eutectic solvents (DESs) as extractants for metal ion separation is largely due to the ease of their preparation and the possibility of modifying them depending on the composition of the metal mixture to be separated. However, the most common approach to DES modification involves the replacement of the extractant, while ...

Added: October 2, 2026

Crystal Structure and 35Cl NQR Spectroscopy in Сhlorinated closo-Dodecaborate Clusters {[(Me2CO)Ag(μ-Me2CO)2Ag(Me2CO)][μ-B12Cl12]}n and {[DMFAg(μ-DMF)2AgDMF][μ-B12Cl12]}n

Мальцева В. Е., Ananyev I., Golubev A. V. et al., Russian Journal of Inorganic Chemistry 2026 Vol. 71 P. 724–736

Two voluminous polymer silver(I) salts of perchlorinated dodecoborate clusters, {[(Me2CO)Ag(μ-Me2CO)2Ag(Me2CO)][μ-B12Cl12]}n (1) and {[DMFAg(μ-DMF)2AgDMF][μ-B12Cl12]}n (2) were synthesized. The 35Cl nuclear quadrupole resonance (NQR) spectroscopy supplemented with the X-ray diffraction data was applied for identifying and analyzing noncovalent interactions Cl···X in these salts. Whereas in X-ray diffraction, noncovalent interactions are associated with the presence of the shortened ...

Added: October 2, 2026

High-Resolution X‑ray Diffraction of TeII-Centered Chalcogen Bonds: Direct Visualization of σ–Holes and Quantitative Bonding Analysis

Мальцева В. Е., Rozhkov A., Ananyev I. et al., Inorganic Chemistry 2026 Vol. 65 No. 22 P. 12484–12496

Despite the well-established importance of chalcogen bonding in crystal engineering and supramolecular chemistry, experimental charge density data for TeII-centered chalcogen bonds have remained entirely absent, leaving the electronic nature of these interactions uncharacterized at the level of directly measured electron density. Here, we report the first high-resolution X-ray diffraction (HRXRD) study of TeII-centered chalcogen bonds, ...

Added: October 2, 2026

High Temperature Oxidation Resistance of Off-Stoichiometric (Ni39.6Co29.3Cr10Al15.8Ta3.3Nb2)98.5B1.5 Chemically Complex Intermetallic Alloy

Ostovari Moghaddam A., Mehrabi-Kalajahi S., Solizoda I. A. et al., Metals and Materials International 2026 P. 1–9

Off-stoichiometric boron-doped chemically complex intermetallic alloys (CCIMAs) have recently emerged as a new avenue for overcoming the low temperature brittleness of ordered superlattices. However, their behavior at high temperatures remains unexplored. In this study, a novel (Ni39.6Co29.3Cr10Al15.8Ta3.3Nb2)98.5B1.5 CCIMA was prepared and its oxidation resistance over a wide temperature range (500 °C–950 °C) was studied. The ...

Added: October 1, 2026

MPI+OpenMP implementation of resolution-of-the-identity Hartree-Fock method exploiting permutational symmetry of three-center electron repulsion integrals

Kashpurovich I., Oleynichenko A., Stegailov V., Supercomputing Frontiers and Innovations 2026 Vol. 13 No. 1 P. 52–73

We report a high-performance implementation of the resolution-of-the-identity Hartree–Fock method that fully exploits the permutational symmetry of three-center electron repulsion integrals (ERI). The present implementation adopts a hybrid MPI+OpenMP parallelization strategy. Two different algorithmic approaches (with and without the pre-transformation of ERIs) are compared. A custom data layout introduced previously is employed. Designed to efficiently ...

Added: September 28, 2026

Thermodynamic Stabilization of PbS Quantum Dots for High-Performance Short-Wave Infrared Photodetection

Li Y., Han J., Zaman N. et al., ACS Applied Materials & Interfaces 2026 Vol. 18 No. 39 P. 54241–54251

The development of lead sulfide (PbS) quantum dot (QD) photodetectors for short-wave infrared (SWIR) applications has been fundamentally limited by the thermodynamic instability of large PbS QD facets, which leads to aggregation and epitaxial fusion. In this work, robust thermodynamic stabilization was achieved by introducing methylammonium chloride (MACl) in PbS QD surface passivation, as validated ...

Added: September 26, 2026

Coordination-driven assemblies of thioindigo and phthalocyanine chromophores: tuning optical absorption and magnetic interactions

Kolin N., Nazarov D., Krivenko K. et al., Dyes and Pigments 2026 Vol. 254 Article 113957

Interaction of thioindigo dianions with metal phthalocyanines, MPc, where M = MgII, MnII, AlIIICl and SiIVCl2, in the presence of cryptand[2.2.2] produces anionic and neutral complexes: {Crypt(K+)}2{(trans-thioindigo2−)⋅(MgIIPc)2}2−⋅2C6H4Cl2 (1); {Crypt(Cs+)}2{(trans-thioindigo2−)⋅(MnIIPc)2}2− (2), {Crypt(K+)}{(cis-Hthioindigo−)2⋅(AlIIIPc)}− (3) and {(cis-Hthioindigo−)2⋅(SiIVPc)} (4). Bidentate thioindigo2− ligand forms symmetric binuclear dimers in 1 and 2 with short M-O(thioindigo2−) bonds of 1.899(2) and 1.984(6) Å length for ...

Added: September 14, 2026

Coordination complexes of iron(II) phthalocyanine with cationic, anionic and neutral ligands

Romanenko N., Maxim A. Faraonov, Alexey V. Kuzmin et al., Journal of Porphyrins and Phthalocyanines 2024 Vol. 28 No. 09n10 P. 654–664

A series of coordination complexes of iron(II) phthalocyanine (FeIIPc) with anionic, cationic and neutral ligands has been obtained in crystalline form. The salt of FeIIPc with MDABCO[Formula: see text] cations (MDABCO[Formula: see text][FeI(Pc[Formula: see text]][Formula: see text]⋅(I[Formula: see text]⋅2TPC⋅2C6H4Cl2 (1) contains FeIIPc reduced to [FeI(Pc[Formula: see text]][Formula: see text], and the FeI ion coordinates two ...

Added: September 14, 2026

Bis(ethylenedithio)tetrathiafulvalene and dibenzotetrathiafulvalene salts with dicyanoiron(III) phthalocyanine anions

Flakina A. M., Torunova S. A., Faraonov M. et al., Inorganica Chimica Acta 2024 Vol. 563 Article 121933

Electrooxidation of bis(ethylenedithio)tetrathiafulvelene (BEDT-TTF) and dibenzotetrathiafulvelene (DB-TTF) in the presence of dicyanoiron(II) phthalocyanine dianions in form of the {Cryptand(K+)}2{FeII(CN)2Pc}2− salt has been studied in o-dichlorobenzene and acetonitrile solutions (where Cryptand is cryptand[2.2.2]). Initially iron(II) is oxidized to iron(III) and after that tetrathiafulvelenes are oxidized forming crystalline salts (BEDT-TTF•+){FeIII(CN)2Pc}−⋅C6H4Cl2 (1) and (DB-TTF•+){FeIII(CN)2Pc}−⋅C6H4Cl2 (2). Both salts contain ...

Added: September 14, 2026

Сольватация и электрохимические свойства тетрасульфофталоцианината кобальта в водно-диметилформамидных растворителях

Кованова М. А., Кузьмина И. А., Постнов А. С. et al., Журнал физической химии 2023 Т. 97 № 3 С. 386–391

В настоящей работе изучено влияние состава и свойств смешанного растворителя вода – N,N-диметилформамид (χDMF = 0.0–1.0 мол. доли) на изменения в сольватном состоянии 3(4),10(11),17(18),24(25)-тетрасульфофталоцианината кобальта (CoTSPc). Определена область электрохимической устойчивости электролитной системы CoTSPc–DMF при 25.0°C. Методы исследования: метод межфазного распределения вещества, электронная спектроскопия поглощения, циклическая вольтамперометрия. ...

Added: September 16, 2025

The influence of methoxy- group position on thermal stability and properties of novel isomeric 4-[(methoxy)phenoxy] phthalonitriles and phthalocyanine complexes based on them

Erzunov D., Rassolova A., Botnar A. et al., Dyes and Pigments 2023 Vol. 219 Article 111600

Isomeric 4-[(methoxy)phenoxy]phthadinitriles were obtained and characterized in this work. The compounds showed high thermal stability, which is directly related to their structure. These features were revealed and described using X-ray diffraction analysis. For m-substituted structures during packing, the largest contribution was found from intermolecular interactions of the π-stacking type between nitrile fragments. In the packing ...

Added: September 16, 2025

Column chromatography separation of lanthanide(III) bisphthalocyaninate and phthalocyanine ligand

Botnar A. A., Tikhomirova T. V., Vashurin A., Mendeleev Communications 2023 Vol. 33 No. 5 P. 729–731

During the synthesis of double-decker f-metal phthalocyanine complexes Ln(Pc)2 free phthalocyanine ligands can be also formed, however, routine column chromatography is not effective for their separation. The preliminary reduction of the complexes with hydrazine hydrate affords the low mobile forms, which can be re-oxidized in the chromatography columns after the free ligand is eluted. ...

Added: September 16, 2025

Electrocatalytic Properties of Water-Soluble Nickel(II) and Copper(II) Phthalocyaninates in the Oxidation of Hydroxide Ions

Kovanova M. A., Derbeneva P. D., Postnov A. S. et al., Russian Journal of Electrochemistry 2024 Vol. 60 No. 6 P. 429–434

The electrochemical and electrocatalytic behavior of gold electrodes modified with tetra-4-sulfophthalocyaninates of nickel(II) (NiPc) and copper(II) (CuPc) is studied in aqueous alkaline solutions using cyclic voltammetry. The electrocatalytic activity of phthalocyaninates of these metals in the oxidation of hydroxide ions to form molecular oxygen is assessed and compared with the literature data. ...

Added: September 16, 2025

The role of spacer heteroatomic fragment in spectroscopic and luminescent behaviour of phenyl-substituted phthalocyanine complexes

Erzunov D., Alekseeva A., Sarvin I. et al., Journal of Porphyrins and Phthalocyanines 2024 Vol. 28 No. 09n10 P. 701–709

Peripheral phenyl-substituted metal phthalocyanines with thio and oxa substitution in the spacer bridge fragment were obtained in the work. Spectroscopic properties were studied for the obtained complexes, and the main patterns of behavior and characteristics change depending on the solvent and the nature of the spacer atom. It is shown that the replacement of an oxygen ...

Added: September 16, 2025