{2-[2-(Salicylideneaminomethyl)phenylimino-methyl]phenolato(2–)-N,N',O,O'}copper(II)

Kani, Yoshiyuki; Ohba, Shigeru; Ishikawa, Takashi; Sakamoto, Masatomi; Nishida, Yuzo

doi:10.1107/s0108270197013619

Cited by 4 publications

(5 citation statements)

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“…The coordination geometry around copper in the 2+ oxidation state in 2 is established by the two phenolate oxygen atoms (O1 and O2) and the two imino nitrogen atoms (N1 and N2). Examination of the metal-ligand distances of Cu(II) Schiff base complexes [51][52][53][54][55] shows that the Cu-N (Table 2), they are somewhat different from their corresponding values of a very similar complex [56]. C1-N1 and C27-N2 imine bond lengths (Table 2) are also comparable with those observed in similar complexes [53,54,57].…”

Section: Structure Determination Ofsupporting

confidence: 66%

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

et al. 2008

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Copper(II) and cobalt(II) complexes of salicylaldimine obtained by the condensation of N,N-diethyl-2-methyl-1,4-phenylenediamine with 3,5-di-tert-butyl-2-hydroxybenzaldehyde have been synthesized and characterized by elemental analyses, magnetic susceptibility measurements, cyclic voltammetry, and FT-IR and UV-Vis spectroscopy. The molecular structure of the title copper(II) complex was determined by the single crystal X-ray diffraction technique. The Cu(II) center is coordinated by four atoms of the donor set in a compressed tetrahedral trans-[N 2 O 2 ] environment, which can be essentially ascribed to the presence of bulky fragments of the ligand. The computed bond valences of the copper verify +2 oxidation state and indicate that the copper bonds, in particular Cu-N bonds, are elongated due to steric effects from bulky substituents in the ligands, N-(4-diethylamino-2-methylphenyl). Intermolecular C-HÁÁÁp interactions leading to centrosymmetric synthons serve to stabilize periodic organization of the molecules.

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Section: Structure Determination Ofsupporting

confidence: 66%

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

et al. 2008

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“…In 2a , the M–O phenoxido and M–N iminido distances are 1.8834(12) and 2.0040(3) Å, respectively, while in 2a′ , they are 1.8915(4) and 2.001(4) Å in the same order. However, the bond distances are slightly different from the corresponding value (1.895(2) Å) presented in a recently reported analogous Cu(II) complexes. − …”

Section: Resultscontrasting

confidence: 84%

Cation-/Ligand-Induced Solvent-Assisted Transformations of Zn(II) and Cu(II) Complexes Featuring Single-Pocket Multidentate Chelating Members

Hulushe

Hosten

Akerman

et al. 2023

Crystal Growth & Design

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A new family of single-pocket metal complexes bearing O,N,O-tridentate and O,N-bidentate chelating members {Cu, 1b (P21/n); Ni, 1c (C2/c); Mn, 1d (I2/a); Cu, 2b; and Ni, 2c (both P21/c)}, starting from synthesized and fully characterized Zn(II) (1a; I2/a) and Cu(II) (2a; C 2) precursors, were conveniently prepared via cation-induced solvent-assisted and ligand-induced solvent-assisted transformations. Herein, we show multistep solvent-assisted transformations from cis-1a → trans-1b → cis-1c → cis-1d, as well as all-trans 2a → 2b → 2c. All processes are one-way irreversible, as substantiated by thermodynamic aspects (enthalpies based on Gibbs free energies) derived from density functional theory calculations. On the other hand, complex 2a′ (C2/c; a polymorphic form of 2a) was obtained through a routine synthetic procedure. The compounds have been established by various spectroscopic techniques (infrared, UV–vis, ESI-MS, 1H, and 13C NMR), elemental analysis, and X-ray crystallography. Single-crystal X-ray studies reveal that complexes 1a–d exhibit a pseudo-octahedral geometry around each metal center, with 2a displaying a four-coordinate seesaw geometry Cu(II) sphere (Addison parameter; τ = 0.42), while 2a′ (τ = 0.00), 2b (τ = 0.00), and 2c (τ = 0.00) possess a perfect square-planar configuration around each metal center. Furthermore, distortion is stabilized by the presence of peripheral O-donor atoms from the bulky −OMe group, and by virtue of its size, increased bond lengths and angles are accommodated. Ligand substitution induced coordination geometry transformation from quasi-square-planar 2a to perfect square-planar 2b. Assessment of the metric parameter shows that the distances between the two Cu–Omethoxy are all largely positive due to Jahn–Teller distortion, indicating an unprecedented tetragonal bipyramidal geometry in 1b.

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“…The Cu-N and Cu -O bond lengths agree with those in related complexes (e.g. Kani et al, 1998;Lo et al, 1997;Ünver, 2002).…”

Section: Data Collectionsupporting

confidence: 83%

“…For background information and applications of Schiff base complexes, see: Adsule et al (2006); Barton et al (1979); Cohen et al (1964); Henrici-Olive & Olive (1984); Erxleben & Schumacher (2001). For related structures, see: Kani et al (1998); Lo et al (1997); Ü nver (2002).…”

Section: Related Literaturementioning

confidence: 99%

Bis{1-[(4-methylphenyl)iminomethyl]-2-naphtholato-κ²N,O}copper(II)

Zhu¹,

Hong-yan²,

Wang³

et al. 2010

Acta Cryst E

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{2-[2-(Salicylideneaminomethyl)phenylimino-methyl]phenolato(2–)-N,N',O,O'}copper(II)

Cited by 4 publications

References 1 publication

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

Cation-/Ligand-Induced Solvent-Assisted Transformations of Zn(II) and Cu(II) Complexes Featuring Single-Pocket Multidentate Chelating Members

Bis{1-[(4-methylphenyl)iminomethyl]-2-naphtholato-κ²N,O}copper(II)

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{2-[2-(Salicylideneaminomethyl)phenylimino-methyl]phenolato(2–)-N,N',O,O'}copper(II)

Cited by 4 publications

References 1 publication

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

Cation-/Ligand-Induced Solvent-Assisted Transformations of Zn(II) and Cu(II) Complexes Featuring Single-Pocket Multidentate Chelating Members

Bis{1-[(4-methylphenyl)iminomethyl]-2-naphtholato-κ2N,O}copper(II)

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Bis{1-[(4-methylphenyl)iminomethyl]-2-naphtholato-κ²N,O}copper(II)