A variable bidentate traceless directing group for nickel-catalyzed regioselective B–H poly-chalcogenation of o-carboranes

Inorganic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A nickel-catalyzed direct cage B–H poly-chalcogenation of icosahedral carborane clusters, enabled by a variable bidentate 8-aminoquinoline traceless directing group, has been developed under oxidant-free and weakly basic conditions.

Language: Английский

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Reactivity of Half-Sandwich 16-e Carborane Complex CpCo[S2C2B10H10] with Triarylphosphines

Russian Journal of Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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A New Approach for the Synthesis of Powder Zinc Oxide and Zinc Borates with Desired Properties

Inorganics, Journal Year: 2022, Volume and Issue: 10(11), P. 212 - 212

Published: Nov. 17, 2022

Zinc borates are widely used in industry due to their thermal stability as a flame retardant the production of plastics, rubber, and other polymer compositions. We have developed simple effective approach for synthesis zinc borate powders with desired properties, including particle size, low bulk density, high reactivity, etc. were prepared by treatment concentrated water–carbohydrate solution salt until finely dispersed ZnO was formed, followed its hydrothermal at 90–300 °C part suspension based on hot aqueous H3BO3. According X-ray powder diffraction, IR spectroscopy, TG–DSC data, depending temperature treatment, decrease water content structure synthesized particles is observed. TEM SEM data indicate formation isometrically shaped nanometer range during above 250 °C. Varying affects average size fineness particles.

Language: Английский

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Synthesis of New Rhodacarborane [3,3-(1',5'-COD)-8-PrNH=C(Et)NH-3,1,2-RhC2B9H10]

Russian Journal of Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 67(10), P. 1537 - 1544

Published: Sept. 27, 2022

Language: Английский

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Synthesis and Antibacterial Activity Studies of the Conjugates of Curcumin with closo-Dodecaborate and Cobalt Bis(Dicarbollide) Boron Clusters

Molecules, Journal Year: 2022, Volume and Issue: 27(9), P. 2920 - 2920

Published: May 3, 2022

A series of novel conjugates cobalt bis(dicarbollide) and closo-dodecaborate with curcumin were synthesized by copper(I)-catalyzed azide-alkyne cycloaddition. These tested for antibacterial activity. It was shown that all derivatives are active when exposed to Bacillus cereus ATCC 10702 not against Gram-negative microorganisms Candida albicans at the maximum studied concentration 1000 mg/L. The conjugate alkynyl-curcumin azide from tetrahydropyran derivative exhibited activity Gram-positive microorganisms: Staphylococcus aureus 29213, Enterococcus faecalis 29212 clinical isolate MRSA 17, surpassed 2-4 times.

Language: Английский

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Spontaneous Isomerization [trans-B20H18]2– → [iso-B20H18]2– during Cobalt(II) Complexation with Phenanthroline

Russian Journal of Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 67(8), P. 1169 - 1177

Published: Aug. 1, 2022

Abstract In this work, the cobalt(II) complexation with 1,10-phenanthroline (Phen) in presence of [ trans -B 20 H 18 ] 2– anion has been studied. At a Co : Phen = 1 2 ratio acetonitrile, binuclear complex bridging chlorine atoms and boron cluster as counterion [(Phen) Co(µ-Cl) Co(Phen) ][ isolated. However, during slow crystallization (within month), spontaneous isomerization into iso is observed. It established by X-ray diffraction analysis that crystal final compound 1/3 2/3 , co-crystallization both isomeric forms octadecahydroeicosaborate observed for first time. The form also confirmed IR spectroscopy data: spectrum product shows band stretching vibrations BHB bridge groups at 1773 cm –1 which absent -form cluster.

Language: Английский

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Solvent Molecules as Ligands in Coordination Compounds of Metals with Boron Cluster Anions and Their Derivatives (A Review)

Russian Journal of General Chemistry, Journal Year: 2022, Volume and Issue: 92(3), P. 393 - 417

Published: March 1, 2022

Language: Английский

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How substituents at boron atoms affect the CH-acidity and the electron-withdrawing effect of the ortho-carborane cage: A close look on the 1H NMR spectra

Inorganica Chimica Acta, Journal Year: 2022, Volume and Issue: 547, P. 121339 - 121339

Published: Dec. 9, 2022

Language: Английский

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Synthesis and Structures of Lead(II) Complexes with Hydroxy-Substituted Closo-Decaborate Anions

Inorganics, Journal Year: 2023, Volume and Issue: 11(4), P. 144 - 144

Published: March 28, 2023

Mixed-ligand lead(II) complexes with 2,2′-bipyridyl and [B10H9OH]2− or monosubstituted hydroxy-substituted closo-decaborate anions a pendant hydroxy group, separated from the boron cage by an alkoxylic spacer of different lengths [B10H9O(CH2)xO(CH2)2OH]]2− (x = 2 5) have been synthesized. Compounds characterized IR multinuclear NMR spectroscopies. The structures binuclear complex [Pb(bipy)2[B10H9OH]]2·CH3CN (1·CH3CN), mononuclear [Pb(bipy)2[B10H9O(CH2)2O(CH2)2OH]]·0.5bipy·CH3CN (2·0.5bipy·CH3CN), polymeric [Pb(bipy)[B10H9O(CH2)5O(CH2)2OH]]n (3) determined single-crystal X-ray diffraction. In all three compounds, co-ordination polyhedra are formed N atoms two bipy molecules, O substituent attached to cage, BH groups cage.

Language: Английский

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Features of Cadmium(II) Complexation with N-Donor Heterocyclic Ligands in the Presence of the Octadecahydroeicosaborate Anion

Russian Journal of Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 68(10), P. 1406 - 1413

Published: Oct. 1, 2023

Language: Английский

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