Crystal structure of aqua-N-(2-hydroxyphenylmethenylimino)-1,5-diamine-3-azapentanecopper(II) chloride, [(C11H16N3O)Cu(H2O)]Cl

Zhu, Haibo; Li, S.-Y.; He, Wei; Yu, Kai‐Bei

doi:10.1524/ncrs.2002.217.jg.599

Cited by 5 publications

(2 citation statements)

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“…Schiff base metal complexes are one of the most important stereochemical models in transition metal coordination chemistry with their easy preparation and structural variation [4][5][6]. As an extension of our work on the structural characterization of Schiff base complexes [7], a new mononuclear copper(II) complex is reported.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of dichloro((N-(N′,N′-dimethylammonio)ethyl)- 2,4-dichlorosalicylaldiminato-N,O)copper(II), Cu(C11H14Cl2N2O)Cl2

She

et al. 2006

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialReagents and solvents used were of commercially available quality. N,N-Dimethylethane-1,2-diamine (44.3 mg, 0.5 mmol), 3,5-dichloro-2-hydroxybenzaldehyde (95.3 mg, 0.5 mmol), and CuCl 2 · 2H2O (85.2 mg, 0.5 mmol) were stirred and refluxed in ethanol at about 351 K for 1 h. Then the mixture was cooled to room temperature and filtered. Prismatic crystals suitable for Xray structural determination were formed by slow evaporation of the solvent from the filtrate after about a week. Elemental analysis: found C, 33.23 %; H, 3.45 %; N, 7.17 %; calc. for C 11H14Cl4CuN2O C, 33.40 %; H, 3.57 %; N, 7.08 %. Experimental detailsAtom H2 was located in a Fourier difference map and refined isotropically, with the NH distance restrained to 0.90(1) Å. All other H atoms were positioned geometrically and constrained as riding atoms, with CH distances of 0.93 Å 0.97 Å and U iso(H) set to 1.2 or 1.5Ueq(C) of the parent atom. DiscussionMetal complexes of Schiff bases have been extensively studied, and copper(II) complexes play a major role in both synthetic and structural research [1][2][3]. Schiff base metal complexes are one of the most important stereochemical models in transition metal coordination chemistry with their easy preparation and structural variation [4][5][6]. As an extension of our work on the structural characterization of Schiff base complexes [7], a new mononuclear copper(II) complex is reported.The Cu II ion in the title complex is four-coordinated by one O and one imine N atom of the Schiff base, and by two terminal Cl atoms, giving a tetrahedral environment. All the bond lengths related to the Cu center are comparable to the corresponding values observed in other Schiff base copper(II) complexes [8][9][10].

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Section: Discussionmentioning

confidence: 99%

Crystal structure of dichloro((N-(N′,N′-dimethylammonio)ethyl)- 2,4-dichlorosalicylaldiminato-N,O)copper(II), Cu(C11H14Cl2N2O)Cl2

She

et al. 2006

Zeitschrift Für Kristallographie - New Crystal Structures

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“…Recently we prepared some new Schiff bases using N-2-hydroxyethyl-l,2-ethylenediamine and aldehydes, and some new transition metal complexes [1][2][3][4][5] with Schiff bases. In this paper we reported the crystal structure of a silver® complex with a new Schiff base ligand, A^-(2-(2-hydroxyethylamino)ethyl)-2-fluorobenzaldimine (L).…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of {N-[2-(2-hydroxyethylamino)ethyl]-2-fluorobenzaldimine}-( 3,5-dinitrobenzoato)silver(I) – water (1:0.25), Ag(C7H3N2O6)(C11H15FN2O) · 0.25 H2O

Zou¹,

Chen²,

Song³

et al. 2004

Zeitschrift Für Kristallographie - New Crystal Structures

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Ci8Hi8.50AgFN4O7.25, monoclinic, C12/cl (no. 15), a = 23.65(1) A, b = 5.524(2) A, c = 31.13(1) A, P = 98.564(7)°, V = 4022.4 A 3 , Z = 8, R gl (F) = 0.056, wRniF 2 -) = 0.170, T= 298 K. Source of materialAll reagents and solvents were used as purchased without further purification. C, H and N elemental analyses were performed on a Perkin-Elmer elemental analyzer. Equimolar 2-fluorobenzaldehyde (1 mmol, 124 mg) and 2-hydroxyaminoethylamine (1 mmol, 104 mg) were dissolved in ethanol solution (5 ml) with stirring. After 30 min, a suspension solution of Ag20 (166 mg, 0.5 mmol) and 3,5-dinitrobenzoic acid (212 mg, 1 mmol) in acetonitrile (10 ml) were added to the above solution. The resultant solution was kept to evaporate slowly in air. After about half of the solvent had evaporated, large colorless slab crystals of the title compound were deposited and were collected by filtration (yield 61 %). Elemental analysis: found -C,40.10%;H, 3.55 %;N, 10.26 %;calc. forCi8Hi8.5AgFN4O7.25-C, 40.51 %; H, 3.49 %; N, 10.50 %. Experimental detailsAll atoms were fixed geometrically and restrained to ride on their parent atoms. They were treated as riding atoms, with [/¡¡»(H) = 1.2U e q(C, N) and i/i S0 (H) = 1.5t/eq(0), respectively. The disordered water 08 and O8A positions are disordered and half occupied. This is coupled with the orientational disorder of the ethoxy group. All disordered atoms were refined using restrained bond distances and angles. Only uniform isotropic displacement parameters could be assigned to the respective non-hydrogen atoms.In the last refinement cycles the s.o.f. s of the disordered ethoxy atoms were fixed to 0.5 due to their ranging between 0.45 and 0.63 in previous refinement stages. The crystals turn to fragile even to powder (decomposes) at a temperature below 120 K, thus a data collection at low temperature was not possible. At the present condition, the U values of a few atoms are reasonably large. DiscussionRecently we prepared some new Schiff bases using N-2-hydroxyethyl-l,2-ethylenediamine and aldehydes, and some new transition metal complexes [1][2][3][4][5] with Schiff bases. In this paper we reported the crystal structure of a silver® complex with a new Schiff base ligand, A^-(2-(2-hydroxyethylamino)ethyl)-2-fluorobenzaldimine (L). The crystal structure of the title compound consists of a neutral mononuclear silver(I) complex and lattice water molecules. The 08 and 08 A atoms of the lattice water locate in special positions. In the complex, the central silver(I) complex is three-coordinated by two nitrogen atoms from a Schiff base ligand, and by one oxygen atom from a 3,5-dinitrobenzoate anion. The 3,5-dinitrobenzoate acts as a monodentate ligand. The Ag-O bond length is 2.157(4) A, being significantly shorter than that of 2.483(3) A in other silver(I) complexes with 3,5-dinitrobenzoate [6], but being in the range of normal Ag-O contacts. The Ag-Nimine bond length (2.574(5) A) is much longer than the Ag-Namine bond length (2.229(5) A), which is unusual. This is presumably caused by...

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Molecular design of mononuclear complexes of acyclic Schiff-base ligands

Гарновский

Васильченко

Гарновский

et al. 2008

Journal of Coordination Chemistry

112

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Crystal structure of aqua-N-(2-hydroxyphenylmethenylimino)-1,5-diamine-3-azapentanecopper(II) chloride, [(C11H16N3O)Cu(H2O)]Cl

Cited by 5 publications

References 8 publications

Crystal structure of dichloro((N-(N′,N′-dimethylammonio)ethyl)- 2,4-dichlorosalicylaldiminato-N,O)copper(II), Cu(C11H14Cl2N2O)Cl2

Crystal structure of dichloro((N-(N′,N′-dimethylammonio)ethyl)- 2,4-dichlorosalicylaldiminato-N,O)copper(II), Cu(C11H14Cl2N2O)Cl2

Crystal structure of {N-[2-(2-hydroxyethylamino)ethyl]-2-fluorobenzaldimine}-( 3,5-dinitrobenzoato)silver(I) – water (1:0.25), Ag(C7H3N2O6)(C11H15FN2O) · 0.25 H2O

Molecular design of mononuclear complexes of acyclic Schiff-base ligands

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