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Article
Polymorphism of 2,4,6-trinitro-4′-iododiphenylamine
The experimental conditions for preparation of four differently colored polymorphs of 2,4,6-trinitro-4′-iododiphenylamine, a picryl autocomplex, have been determined. The specific features of intra-and intermo...
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Article
Electrochemical study of the sequence of reductive dehalogenation of 2-bromo-5-dibromomethyl-4-dichloromethyl-4-methylcyclohexa-2,5-dien-1-one and its analogs
The electrochemical behavior of a series of halogen-containing cyclohexa-2,5-dien-1-ones at the glassy-carbon electrode in DMF was studied. The reductive dehalogenation of 2-bromo-5-dibromomethyl-4-dichloromet...
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Article
Synthesis and spectral properties of autocomplexes of the nitroquinoline series
A number of new NH-bridged nitroquinoline derivatives with intramolecular charge transfer (autocomplexes) were synthesized starting from 8-chloro-5,7-dinitroquinoline and aromatic N,O-heterocyclic amines chara...
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Article
5-(Pyridylmethylidene)-substituted 2-thiohydantoins and their complexes with CuII, NiII, and CoII: Synthesis, electrochemical study, and adsorption on the cystamine-modified gold surface
A series of CuII, NiII, and CoII complexes with 5-(pyridylmethylidene)-substituted 2-thiohydantoins (L) were synthesized by the reactions of the corresponding organic ligands with MCl2·nH2O. The resulting complex...
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Article
Synthesis and electrochemical properties of ruthenium(II) complexes with biquinoline-containing polyamic acids—Polybenzoxazinone prepolymers
New polyamic acids with biquinoline units in the backbone, which are prepolymers of polybenzoxazinones, as well as their metal-polymer complexes containing [Ru(bpy)2]2+, were prepared. The electronic structure of...
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Article
Complexation in a 5-acylpyrimidine-4-thione—aliphatic diamine—metal(II) chloride system (M = Ni or Co). The molecular structure of fac-tris(5-acetyl-2,4-dimethylpyrimidine-6-thiolato)cobalt(III)
The reactions of 5-acylpyrimidine-4-thiones with aliphatic diamines in the presence of NiII and CoII salts were studied. New NiII and CoIII complexes with ligands of the pyrimidinethione series were synthesized. ...
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Article
Synthesis and electrochemical study of complexes of 2-methylthio-5-(pyridylmethylidene)-3,5-dihydro-4H-imidazol-4-ones with transition metals (Co, Ni, and Cu). Molecular structures of CuIIL1Cl2 (L1 is (5Z)-2-methylthio-3-phenyl-5-(α-pyridylmethylidene)-3,5-dihydro-4H-imidazol-4-one) and CoIIL2Cl2 (L2 is (5Z )-3-methyl-2-methylthio-5-(α-pyridylmethylidene)-3,5-dihydro-4H-imidazol-4-one)
New transition metal (NiII, CoII, and CuII) complexes with 2-methylthio-5-(pyridyl-methylidene)-3,5-dihydro-4H-imidazol-4-ones were synthesized by the reaction of 5-(α-, β-, or γ-)pyridyl-substituted 2-methylthio...
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Article
Regioselectivity of reductive debromination of substituted pentabromobenzenes with sodium tert-butoxide in DMSO
The regioselectivity of reductive debromination of substituted pentabromobenzenes C6Br5X (X = NH2, OMe, Me, H, Cl, F, and NO2) under the action of ButONa in DMSO containing ButOH has been studied. The reaction fo...
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Article
Synthesis and electrochemistry of (5Z,5′Z)-2,2′-(alkane-α,ω-diyldisulfanyldiyl)-bis(5-(2-pyridylmethylene)-3,5-dihydro-4H-imidazol-4-one) complexes with cobalt(II) chloride
A series of S-alkylated 2-thiohydantoin derivatives containing two 5-(2-pyridylmethylene)-2-sulfanyl-3,5-dihydro-4H-imidazol-4-one moieties linked through a polymethylene bridge with different numbers of carbon a...
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Article
“Conjugate” Substitution of Hydrogen in the Methyl Group of Pentabromotoluene in the Presence of Strong Bases
The reactions of pentabromotoluene with i-PrONa or t-BuONa in pyridine give N-(pentabromobenzyl)pyridinium bromide and a mixture of isomeric tetrabromotoluenes. In the presence of bromine or carbon tetrabromide, ...
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Article
Synthesis, crystal structures, and electrochemistry of CuII complexes with tetradentate N2O2 ligands derived from 3,7-diazabicyclo[3.3.1]nonan-9-one
New copper(II) complexes with tetradentate ligands derived from 1,5-diphenyl-3,7-diazabicyclo[3.3.1]nonan-9-one and containing the N,N′-2-hydroxyethyl, 2-methoxyethyl, and carboxymethyl substituents were synthesi...
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Article
Reductive electrocatalytic dehalogenation of nitrobenzyl halides: nitrophilic or halophilic attack?
Electrochemical reduction of Cp2TiCl2 in the presence of benzylic halides results in their catalytic dehalogenation to form toluene derivatives. Possible schemes for the process were proposed on the basis of the ...
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Article
Synthesis and physicochemical study of NiII complexes with tetradentate acyclic and macrocyclic N2S2 ligands as thiosalen analogs
N,N’-Polymethylenebis(thiosalicylidene)iminate and macrocyclic dithiadiazadibenzocycloalkadiene complexes of nickel(II) were synthesized and their electrochemical and spectroscopic properties were studied. Dithi...
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Article
Comparison of electrochemical behavior of exohedral palladium complexes with [60]- and [70]-fullerenes and metallocene ligands
Electronic structures of exohedral palladium complexes of [60]- and [70]-fullerenes with diphenylphosphinoferrocenyl, diphenylphosphinoruthenocenyl, and diphenylphosphinocymantrenyl ligands were studied by cyc...
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Article
Electrochemical Arylation of N-Containing Chelate and Macrocyclic Complexes of Transition Metals with the Aid of Diphenyliodonium Salts
A new method of electrochemical arylation of complexes of transition metals (Fe, Co, Ni) with N-containing chelate and macrocyclic (dimethylglyoximate, porphyrin, etc.) ligands employs diphenyliodonium salts as a...
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Article
New Complexes of Nickel(II) Containing Macrocyclic Diaminodiiminepiperazine Ligands: Synthesis and Electrochemical Properties
Complexes of Ni(ClO4)2 with 1,4-bis(2-aminobenzyl)piperidine (1) and 1,4-bis(2-amino-4-tertbutyl)piperidine (2) and products of their cyclization with ortho-phthalic aldehyde in methanol [NiL3][ClO4]2 (3) and [Ni...
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Article
Electrochemical study of boron-mercurated derivatives of 3-cyclopentadienyl-3-cobalta-1,2-dicarba-closo-dodecaborane
The cyclic voltammetry and rotating disc electrode methods were used to study the electrochemical reduction and oxidation of boron-mercurated mono- and dimercury derivatives of 3-cyclopentadienyl-3-cobalta-1,2...
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Article
Synthesis and properties of nickel(ii) diiminodithiolate and diiminodisulfide N2S2-type complexes. New complexes with non-innocent ligands
The following two groups of nickel(ii) diiminodithiolate and diiminodisulfide N2S2-complexes were synthesized for the first time: (1) complexes with complete π conjugation between all four donor centers, viz., co...
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Article
Electrochemical properties of 2,2":6",2″-terpyridine complexes of platinum(ii) with arenethiolate ligands. Alkylation of reduced forms of the complexes
Three mixed-ligand terpyridine-thiolate PtII complexes containing 2,2":6",2″-terpyridine (tpy) and para-substituted thiophenolate ions, [(tpy)Pt(SC6H4-4-X)]BF4 (X = NMe2, H, NO2) were synthesized. The complexes w...
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Article
Reaction of Some Dibromomethyl-Substituted Cyclohexadienones with Molecular Bromine
4-Dibromomethyl-4-methyl-2,5-cyclohexadienone and its 2- and 3-methyl-substituted derivatives react with an equimolar amount of molecular bromine in carbon tetrachloride, yielding vinyl bromination products at...
