Mihai Răducă

Bacterial Cellulose-Containing Alginate Inks: A Proof-of-Concept Study on Acellular 3D Printing Feasibility and Cytocompatibility

Elena Uțoiu, Elena Iulia Oprita, Vasile Sorin Manoiu, Rodica Tatia et autres

The development of hydrogel bioinks that combine structural stability with biological compatibility remains a major challenge in extrusion-based 3D printing for tissue engineering. In this proof-of-concept study, bacterial cellulose (BC) obtained from kombucha fermentation was explored as a sustainable nanofibrillar component for …

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Design of Metallocages by Combining Mannich and Schiff Reactions

Ștefan DIMITRIU, Alexandru Gabriel Bucur, Sergiu Shova, Gabriela Ioniţă et autres

Abstract Metallocages [M(H3L2)]X2 (M = MnII, CoII, NiII, ZnII; X– = ClO4–, BF4–) have been obtained in a rational way, through template synthesis, relying on Mannich and Schiff reactions and transition metal ions as templates. Their structures have been solved by single …

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Bis(diallylcarbamodithioato)(quinaldine)zinc(II)

Mihai Răducă, Sergiu Shova, Florea Dumitrascu, Constantin Draghici et autres

The crystal structure of the title compound {systematic name: [bis(prop-2-en-1-yl)carbamodithioato-κ 2 S , S ′](2-methylquinoline-κ N )zinc(II)}, [Zn(C 7 H 10 NS 2 ) 2 (C 10 H 9 N)] the heteroleptic complex reveals supramolecular dimers established by π–π interactions between adjacent …

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X-ray diffraction in the elucidation of complex reaction outcomes of neocuproine and dialkyl acetylenedicarboxylic acid esters

Florea Dumitraşcu, Mino R. Caira, М. Gdaniec, Mihaela Cristea et autres

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Functionalization of Nitronyl-Nitroxide Ligands via Schiff Condensations: Rational Synthesis of Binuclear Complexes with Bis-Nitronyl-Nitroxide Ligands

Mihai Răducă, Luca M. Carrella, Gabriela Ioniţă, Alexandru‐Tudor Toderașc et autres

Starting from 2,6-diformyl- p -cresol, only one formyl group has been transformed into the mono nitronyl-nitroxide radical, HL 2 (2-(2-hydroxy-3-formyl-5-methylphenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1 H -imidazolyl-1-oxyl 3-oxide). The presence of the formyl group in HL 2 allows further functionalization using Schiff condensation reactions. HL 2 has …

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Mononuclear and binuclear nickel(II) complexes with a Schiff base ligand derived from 2,3-dihydroxybenzaldehyde

Diana-Ioana Eftemie, Teodora Mocanu, Diana Dragancea, Mihai Răducă et autres

The Schiff base (H2L) obtained from the condensation of 2,3dihydroxybenzaldehyde and 2-(aminoethyl)pyridine was employed as a proligand for the preparation of three new Ni(II) complexes: [Ni(HL)2][Ni(H2L)2](ClO4)2‧2C2H3N (1), [Ni2(HL)2(NO3)2](2), and [Ni2(HL)2(hfac)2] (3).All compounds have been characterized by single crystal and powder X-ray diffraction, …

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Dielectric and electrical characteristics of a zinc-based hybrid mixed halide material for energy harvesting applications

Soumaya Sidaoaui, Naoufel Ben Hamadi, Raja Jlassi, Abderrazek Oueslati et autres

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Diethyl 3-(4-Bromobenzoyl)-7-(4-pyridyl)indolizine-1,2-dicarboxylate

Mihaela Cristea, Mihai Răducă, М. Gdaniec, Sergiu Shova et autres

The title compound, C26H21BrN2O5 (Compound 4), was obtained via our previously described procedure with modifications, i.e., via a facile one-pot three component reaction starting from commercially available materials. Compound 4 was crystallized from nitromethane. It crystalized in a triclinic crystal system, in …

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Crystal structure and Hirshfeld surface analysis of (Z)-4-((5-isopropyl-3,8-dimethylazulen-1-yl)methylene)-2-phenyloxazol-5(4H)-one

Mihai Răducă, Marcel Mirel Popa, Mihaela Cristea, Alexandru C. Razus et autres

The structure of the title compound, i.e., (Z)-4-((5-isopropyl-3,8-dimethylazulen-1-yl)methylene)-2-phenyloxazol-5(4H)-one (1) has been solved by single-crystal X-ray diffraction. Compound 1 was obtained in good yield (66%) following the Erlenmeyer—Plöchl synthesis, by the condensation of 5-isopropyl-3,8-dimethylazulene-1-carbaldehyde (a) with hippuric acid (b). The packing diagram of …

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Halogen-bonded co-crystals of azulene-1-carboxadehyde with perfluorinated diiodobenzenes

Andreea Dogaru, Adrian Ion, Andrei Pătraşcu, Mihai Răducă et autres

Two new co-crystals assembled from halogen-bonded perfluorinated diiodobenzenes (1,4-ditfb and 1,2-ditfb) and 1-azulenecarboxaldehyde (azcho) are obtained. The crystal structures for both co-crystals show O···I halogen bonds, complemented by weaker C-H···F interactions. The azulene fragment contributes to the stabilisation of the final supramolecular …

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(Z)-4-(Azulen-1-ylmethylene)-2-phenyloxazol-5(4H)-one

Mihaela Cristea, Alexandru C. Razus, Sergiu Shova, Marcel Mirel Popa et autres

The title compound, i.e., (Z)-4-(azulen-1-ylmethylene)-2-phenyloxazol-5(4H)-one (3), has previously been synthesized in a good yield (56%) using the Erlenmeyer–Plöchl procedure. The crystal structure of 3 is described herein along with the results of a Hirshfeld surface analysis. Crystals of compound 3 were obtained …

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The Role of Hydrogen Bond Interactions in Crystal Formation of Pyrrolo-Azines Alcohols

Marcel Mirel Popa, Mihai Răducă, Isabela Costinela Man, Florea Dumitraşcu

New secondary alcohols of type Ar-CHOH-hetaryl and MeCHOH-hetaryl, the radical hetaryl being a pyrroloazine, were investigated in solid state by X-ray single-crystal diffraction analysis, Hirshfeld analysis and DFT methods to assess their crystallographic features. One of the most important features is the …

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