Crystal structures of [Cu2(2,2′-bipyridine-N,N′)2(H2O)2(μ2-OH)2](barbiturate)2·2H2O and [Cu(2,2′-bipyridine-N,N′)(H2O)(barbiturate-O)Cl]·2H2O

Golovnev Nicolay N.; Molokeev Maxim S.; Sterkhova Irina V.; Lesnikov Maxim K.

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Библиографическое описание: Crystal structures of [Cu2(2,2′-bipyridine-N,N′)2(H2O)2(μ2-OH)2](barbiturate)2·2H2O and [Cu(2,2′-bipyridine-N,N′)(H2O)(barbiturate-O)Cl]·2H2O / N. N. Golovnev [et al.]. - Текст : непосредственный // Inorg. Chem. Commun. - 2018. - Vol. 97. - P. 88-92. - Cited Reference Count: 32. - Гранты: The study was carried out within the public task of the Ministry of Education and Science of the Russian Federation to the Siberian Federal University (4.7666.2017/BP) in 2017-2019. X-ray data from single crystals were obtained with use the analytical equ. - Финансирующая организация: Ministry of Education and Science of the Russian Federation [4.7666.2017/BP]. - ICCOF. - DOI 10.1016/j.inoche.2018.09.011.

Аннотация: Two mixed-ligand Cu(II) complexes [Cu2(Bipy)2(H2O)2(OH)2](Hba)2·2H2O (1) and [Cu(Bipy)(H2O)(Hba)Cl]·2H2O (2) (Bipy = 2,2′-bipyridine and Hba− = barbiturate anion) were synthesized and structurally characterized by single crystal X-ray diffraction. In 1, structural data revealed distorted square-pyramidal geometry for each of two crystallographic independent copper(II) atom with the basal plane formed by two nitrogen atoms of the 2,2′-bipyridine ligand and two oxygen atoms of bridging hydroxo groups. The apical positions are filled by the oxygen atoms from a water molecule. In 2, the Cu atom is also in distorted square pyramidal geometry, where the equatorial sites are occupied by two N atoms of one Bipy ligand, one O atom of the barbiturate ion and one chloride ion and the apical position by one aqua ligand. Numerous intermolecular hydrogen bonds O–H⋯O, N–H⋯O, C–H⋯O in the structures 1–2 and in addition O–H⋯Cl, C–H⋯Cl in the structure 2 form the 3D networks. Topological analysis showed that these H-bonded networks are new. An additional factor that plays a role in the crystal packing of the discussed complexes is the π-π stacking interaction between the aromatic rings of Hba− and Bipy forming infinite chains –Hba–Bipy–Bipy–Hba–. The spectroscopic and thermal properties of compounds were analyzed. © 2018 Elsevier B.V.

Год издания: 2018

Авторы: Golovnev Nicolay N. , Molokeev Maxim S. , Sterkhova Irina V. , Lesnikov Maxim K.

Источник: Inorganic Chemistry Communications

Выпуск: Vol. 97

Номера страниц: 88-92

Держатель оригинала документа: Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, 660041, Russian Federation, Laboratory of Crystal Physics, Federal Research Center KSC SB RAS, bld. 38 Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation, Department of Physics, Far Eastern State Transport University, 47 Seryshev Str., Khabarovsk, 680021, Russian Federation, Favorsky Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky, Irkutsk, 664033, Russian Federation

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Crystal structures of [Cu2(2,2′-bipyridine-N,N′)2(H2O)2(μ2-OH)2](barbiturate)2·2H2O and [Cu(2,2′-bipyridine-N,N′)(H2O)(barbiturate-O)Cl]·2H2O
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