Structure and reactivity of [PtX2 (ketoxime) 2] compounds. Cis-trans isomerization and X-ray structures of cis- [PtBr2 (Me2C=NOH) 2] and trans- [PtBr2 (Me2C=NOH) 2] · 2MeC (=O) NMe2

Kukushkin, Vadim Yu.; Tudela, David; Izotova, Youlia A.; Belsky, V. K.; Сташ, А. И.

doi:10.1016/s0277-5387(98)00041-2

Cited by 22 publications

(20 citation statements)

References 26 publications

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“…The Cu(II), Ni(II), and Co(II) complexes of the (1E, 2E)-(4-bromophenyl)(hydroxyimino)acetaldehyde oxime were obtained in ethanol by the addition of sufficient 1% KOH in EtOH to increase the pH to 5.0-5.5. In all of these complexes, the metal/ligand ratio determined by the elemental analysis was found to be 1 : 2 as found for most of the oximes [20][21][22][23][24]. The structures of the complexes are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 68%

Thermal, Electrical, and Optical Properties of Synthesized (1E, 2E)‐(4‐bromophenyl)(hydroxyimino)acetaldehyde Oxime Complexes

Karapinar

Karabulut

Karapınar

2013

Journal of Chemistry

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The (1E, 2E)-(4-bromophenyl)(hydroxyimino)acetaldehyde oxime complexes, [ML2], M = Co(II), Cu(II), and Ni(II), were synthesized and characterized by elemental analysis, magnetic susceptibility, FT-IR spectra, and thermal analysis techniques. The optical band gap of this ligand and its complexes were determined by UV-vis spectrophotometer in the wavelength range 300–800 nm. A decrease in the energy band gap of the [CoL2], [NiL2], and [CuL2] complexes has been observed compared with LH ligand. Temperature-dependent conductivity measurements showed that all samples behave like semiconductor. Activation energies calculated from Arrhenius plots showed that the conduction occurs via both intramolecular and the intermolecular processes.

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Section: Resultsmentioning

confidence: 68%

Thermal, Electrical, and Optical Properties of Synthesized (1E, 2E)‐(4‐bromophenyl)(hydroxyimino)acetaldehyde Oxime Complexes

Karapinar

Karabulut

Karapınar

2013

Journal of Chemistry

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“…IR spectra were recorded on a Mattson 1000 FT-IR spectrometer as KBr pellets. 1 H and 13 C NMR spectra were recorded on a Bruker GmbH Dpx-400 MHz High Performance Digital FT-NMR spectrometers (in DMSO-d 6 ). Electronic spectra were obtained on a Shimadzu 1240 UV spectrometer.…”

Section: Methodsmentioning

confidence: 99%

“…Coordinated oxime ligands and oxime complexes display an impressively rich variety of reactivity modes, which lead to unusual types of chemical compounds [6]. Some recently reviewed data show that oximes, although being classical ligands [7], display a variety of reactivity modes unusual even for the modern coordination chemistry [8,9].…”

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confidence: 99%

Synthesis of New Glyoxime Derivatives, Characterization and Investigation of Their Complexes with Co(II), Ni(II), and Cu(II) Metals and Thermal Studies

2005

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1 The complexes prepared from vic -dioximes were extensively used for various purposes owing to their high stability, including model compounds for vitamin B 12 or trace metal analysis [1][2][3]. The ligands and their metal complexes also played a significant role in the domains of stereochemistry, structure isomerism, spectroscopy, model systems of biochemical interest, cation exchange and ligand exchange chromatography, analytical chemistry, catalysis, stabilizers, polymers, pigments, and dyes [4].The chemistry of oxime/oximato metal complexes has been developed actively since the time of the first synthesis, e.g., preparation of nickel(II) dimethylglyoximate, and recognition of the chelate five-membered character of this complex by Chugaev [5]. Coordinated oxime ligands and oxime complexes display an impressively rich variety of reactivity modes, which lead to unusual types of chemical compounds [6]. Some recently reviewed data show that oximes, although being classical ligands [7], display a variety of reactivity modes unusual even for the modern coordination chemistry [8,9].vic -Dioximes and monooximes are amphoteric materials containing weak acidic OH groups and basic C=N groups. The geometrical isomers of vic -dioximes and their derivatives, depending on the position of the OH groups in the molecule, are syn , anti and amphi structures [10]. Usually, the stability order of these is anti > amphi > syn configuration [11] but there are some exceptions [12].In our previous studies, we presented the synthesis and characterization of various transition metal complexes of novel vic -dioximes [13][14][15][16][17][18][19][20]. In the present paper, we report the synthesis and characterization of 1 The text was submitted by the authors in English.new vic -dioxime ligands morpholineglyoxime ( H 2 L 1 ) and piperidineglyoxime ( H 2 L 2 ) and their mononuclear complexes with Co 2+ , Ni 2+ , and Cu 2+ ions. EXPERIMENTALThe preparation of anti -chloroglyoxime has been described previously [21]. All the reagents used were purchased from Merck, Fluka or Sigma Company and are chemically pure.Elemental analyses (C, H, N) were performed on a LECO-932 CHNSO elemental analyses apparatus. IR spectra were recorded on a Mattson 1000 FT-IR spectrometer as KBr pellets. 1 H and 13 C NMR spectra were recorded on a Bruker GmbH Dpx-400 MHz High Performance Digital FT-NMR spectrometers (in DMSO-d 6 ). Electronic spectra were obtained on a Shimadzu 1240 UV spectrometer. Magnetic susceptibilities were determined on a Sherwood Scientific Magnetic Susceptibility balance (Model MK1) at room temperature using Hg[Co(SCN) 4 ] as a calibrate; diamagnetic corrections were calculated from Pascal's constants. Melting points were determined on a Gallenkamp melting point apparatus. Molar conductance of the vic -dioxime ligands and their transition metal complexes were determined at room temperature using a CMD 750 WPA conductivity meter. TGA curves were recorded on a Shimadzu TG-50 thermobalance.Synthesis of morpholineglyoxime (H 2 L 1 ). A solution o...

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“…Trans-[PtCl2(acetoxime)2](1)[10,11], trans-[PtCl2(acetaldoxime)2] (2) [12], trans-[PtCl2(cyclopentanone oxime)2] (3) [10], and trans-[Pt(o-OC6H4CH=NOH)2] (4) [13] were obtained according to the published methods. Synthesis of Full details are provided for trans-[PtCl4(acetoxime)2] (5); trans-[PtCl4(acetaldoxime)2] (6) and trans-[PtCl4(cyclopentanone oxime)2] (7) were synthesized by analogous procedures.…”

mentioning

confidence: 99%

An efficient method for selective oxidation of (oxime)Pt(II) to (oxime)Pt(IV) species using N,N-dichlorotosylamide

Afanasenko

Bulatov

Chulkova

et al. 2016

Transition Met Chem

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The oxidation of (oxime)Pt II species using the electrophilic chlorine based oxidant N,N-dichlorotosylamide (4-CH3C6H4SO2NCl2) was studied. The reactions of trans-[PtCl2(oxime)2] (where oxime = acetoxime, cyclopentanone oxime, or acetaldoxime) with this oxidant lead to trans-[PtCl4(oxime)2] products. The oxidation of trans-[Pt(o-OC6H4CH=NOH)2] at room temperature gave trans-[PtCl2(o-OC6H4CH=NOH)2], whereas the same reaction upon heating was accompanied by electrophilic substitution of the benzene rings.

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Structure and reactivity of [PtX2 (ketoxime) 2] compounds. Cis-trans isomerization and X-ray structures of cis- [PtBr2 (Me2C=NOH) 2] and trans- [PtBr2 (Me2C=NOH) 2] · 2MeC (=O) NMe2

Cited by 22 publications

References 26 publications

Thermal, Electrical, and Optical Properties of Synthesized (1E, 2E)‐(4‐bromophenyl)(hydroxyimino)acetaldehyde Oxime Complexes

Thermal, Electrical, and Optical Properties of Synthesized (1E, 2E)‐(4‐bromophenyl)(hydroxyimino)acetaldehyde Oxime Complexes

Synthesis of New Glyoxime Derivatives, Characterization and Investigation of Their Complexes with Co(II), Ni(II), and Cu(II) Metals and Thermal Studies

An efficient method for selective oxidation of (oxime)Pt(II) to (oxime)Pt(IV) species using N,N-dichlorotosylamide

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