Structure of palladium (II) pivalate

Batsanov, Andrei S.; Timko, G. A.; Struchkov, Yu. T.; Gérbéléu, N. V.; Indrichan, K. M.; Popovich, G. A.

doi:10.1007/bf00955867

Cited by 29 publications

(37 citation statements)

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“…The X-ray analysis of the structures of these complexes revealed the differences in the {Fe 4 (μ 3 -O) 2 } 8+ core: four Fe atoms in the metal core display a chair conformation in 1a and 2, whereas in 1b, Fe atoms are disposed in a bent butterfly arrangement. The different synthetic routes affect the connectivity of iron atoms in the Fe 4 (μ 3 -O) 2 } 8+ core, thus allowing us to fine-tune the confor- 12 ] [44] were synthesized as described elsewhere. The infrared spectra were recorded with a Perkin-Elmer Spectrum One spectrometer using KBr pellets in the region 4000-400 cm -1 .…”

Section: Resultsmentioning

confidence: 99%

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

et al. 2010

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8 (hmta)] n (2) (bpm = 2,2Ј-bipyrimidine and hmta = hexamethylenetetramine). For cluster 1, two structural isomers, 1a and 1b·3MeCN, have been found. X-ray crystallographic analysis showed that all complexes consist of a central {Fe 4 (μ 3 -O) 2 } 8+ core. In 1a, metal ions in the core are additionally linked by six bridging pivalates as two other pivalates and a bpm ligand are chelated to Fe III ions, whereas in

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Section: Resultsmentioning

confidence: 99%

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

et al. 2010

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“…[25] 1·Et 2 O: MeCN (30 mL) was added to [Fe 3 Crystallography: Crystal data and data collection and refinement parameters for 1 are given in Table 1; selected bond lengths and angles are given in Table 2.…”

Section: Methodsmentioning

confidence: 99%

Studies of an Fe₉ Tridiminished Icosahedron

Tolis

Engelhardt

Mason

et al. 2006

Chemistry A European J

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The synthesis and structural characterization of a nonanuclear FeIII cage complex is reported. The nine iron centers in [Fe9(mu3-O)4(O3PPh)3(O2CCMe3)13] lie on the vertices of an incomplete icosahedron, with the P atoms of triphenylphosphonate at the other three vertices. The paramagnetic core therefore describes a tridiminished icosahedron. Magnetic studies suggest an S=1/2 ground state for the molecule. Analysis of exchange paths and the susceptibility data point to the interpretation that the cluster can be divided into two nearly decoupled sections: an {Fe6O3} section, with an S=0 ground state, in which three oxo-centered triangles bound a central triangle that is not oxo-centered; and an {Fe3O} triangle with S=1/2. The analysis of the susceptibility data leads to a Heisenberg model based on three significant antiferromagnetic exchange interactions, with values of 173.7 cm-1 in the {Fe3O} triangle, and 30.9 and 19.1 cm-1 within the {Fe6O3} section, while the exchange between them is <1 cm-1. With these assignments, the theoretical low-temperature differential susceptibility is also in very good agreement with measurements up to 50 T. Magnetic measurements in the milli-kelvin range reveal striking hysteresis loops and magnetization reversals associated with a Landau-Zener-Stückelberg (LZS) transition as enhanced by the occurrence of a phonon bottleneck.

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“…For comparison the pivalate NiCr 2 OPiv 6 ·3Ppy (IV), which exhibited catalytic characteristics close to its cobalt analog in the decomposition of the hydroperoxide of dibenzyl ether [5] (II), was included in this series. The synthesis and structure of the investigated pivalates were described in [6,7].…”

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The kinetics and main pathways for the liquid-phase oxidation of cyclohexene by air in the presence of cobalt, chromium, iron, and nickel µ3-oxotrimetallohexapivalates

et al. 2007

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The liquid-phase oxidation of cyclohexene (CH) by atmospheric oxygen is of considerable practical interest in connection with the broad synthetic possibilities of its oxidation products -the epoxide (OCH), 3-hydroperoxide (HP), cyclohexen-3-ol (CHol), cyclohexen-3-one (CHone), etc. [1,2]. At the same time CH is a convenient (model) compound for investigation of the main pathways and the selectivity in both direct and conjugate oxidation of compounds with an activated CH bond in relation to composition of the catalytic system and the structure of the metal-complex catalyst.In a continuation of our researches on the catalytic characteristics of the polynuclear pivalates of 3d metals [3, 4] we examined the oxidation of CH in the presence of a series of homo-and heteronuclear complexes with the CoM 2 O core (M = Co, Cr, Fe), viz.: [Co 3 OPiv 6 (g-Pic) 3 ]Piv (I), CoCr 2 OPiv 6 ·3Ppy (II), and CoFe 2 OPiv 6 ·3Ppy (III). For comparison the pivalate NiCr 2 OPiv 6 ·3Ppy (IV), which exhibited catalytic characteristics close to its cobalt analog in the decomposition of the hydroperoxide of dibenzyl ether [5] (II), was included in this series. The synthesis and structure of the investigated pivalates were described in [6,7]. 900040-5760/07/4302-0090

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Structure of palladium (II) pivalate

Cited by 29 publications

References 1 publication

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Studies of an Fe₉ Tridiminished Icosahedron

The kinetics and main pathways for the liquid-phase oxidation of cyclohexene by air in the presence of cobalt, chromium, iron, and nickel µ3-oxotrimetallohexapivalates

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Structure of palladium (II) pivalate

Cited by 29 publications

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Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe4(μ3‐O)2}8+ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe4(μ3‐O)2}8+ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Studies of an Fe9 Tridiminished Icosahedron

The kinetics and main pathways for the liquid-phase oxidation of cyclohexene by air in the presence of cobalt, chromium, iron, and nickel µ3-oxotrimetallohexapivalates

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Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Iron(III)‐Pivalate‐Based Complexes with Tetranuclear {Fe₄(μ₃‐O)₂}⁸⁺ Cores and N‐Donor Ligands: Formation of Cluster and Polymeric Architectures

Studies of an Fe₉ Tridiminished Icosahedron