Bis(2-hydroxyiminomethyl-6-methoxyphenolato-κ2O1,N)nickel(II)

Li, Bingwen; Zeng, Ming‐Hua; Ng, Seik Weng

doi:10.1107/s1600536809005996

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…The structure of 1MeO was first determined at ambient pressure by Li et al at 173 K; [30] the structure was re-determined at ambient temperature as part of this work so that all structures could be compared by using data collected at the same temperature. Data collection and refinement procedures were the same as described above for 1F.…”

Section: Methodsmentioning

confidence: 99%

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

Byrne

Richardson

Chang

et al. 2012

Chemistry A European J

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The crystal structures of bis(3-fluoro-salicylaldoximato)nickel(II) and bis(3-methoxy-salicylaldoximato)nickel(II) have been determined at room temperature between ambient pressure and approximately 6 GPa. The principal effect of pressure is to reduce intermolecular contact distances. In the fluoro system molecules are stacked, and the Ni⋅⋅⋅Ni distance decreases from 3.19 Å at ambient pressure to 2.82 Å at 5.4 GPa. These data are similar to those observed in bis(dimethylglyoximato)nickel(II) over a similar pressure range, though contrary to that system, and in spite of their structural similarity, the salicyloximato does not become conducting at high pressure. Ni-ligand distances also shorten, on average by 0.017 and 0.011 Å for the fluoro and methoxy complexes, respectively. Bond compression is small if the bond in question is directed towards an interstitial void. A band at 620 nm, which occurs in the visible spectrum of each derivative, can be assigned to a transition to an antibonding molecular orbital based on the metal 3d(x(2)-y(2)) orbital. Time-dependent density functional theory calculations show that the energy of this orbital is sensitive to pressure, increasing in energy as the Ni-ligand distances are compressed, and consequently increasing the energy of the transition. The resulting blueshift of the UV-visible band leads to piezochromism, and crystals of both complexes, which are green at ambient pressure, become red at 5 GPa.

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Section: Methodsmentioning

confidence: 99%

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

Byrne

Richardson

Chang

et al. 2012

Chemistry A European J

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A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Qin

Wang

et al. 2016

Polyhedron

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Synthesis and characterisation of κ²-N,O-oxazoline-enolate complexes of nickel(ii): explorations in coordination chemistry and metal-mediated polymerisation

2019

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The synthesis and characterisation (UV-Vis, IR, X-ray diffraction, etc.) of a series of Ni(II) complexes derived from both known and novel 2-acylmethyl-2-oxazolines (2a-g: i.e., (Z)-1-R-2-(4,4 0 -dimethyl-2 0 -oxazolin-These Ni materials (3a-g) represent the first group 10 metal complexes of this ligand class. All derivativesen-1-ate formed via proton loss from 2. The air-and moisture-stable metal complexes feature a less typical distorted seesaw-shaped disposition of binding atoms around the metal centre for six structurally characterised (X-ray) examples. Preliminary investigations indicate that 3a (R ¼ -Ph) is a useful catalysts for olefin polymerisation in the presence of alkylaluminum reagents. Scheme 1 Azole heterocycles: 1,3-oxazole (top, left); 1,3-benzoxazole (top, middle); 4,5-dihydro-1,3-oxazole (i.e., 2-oxazoline: top, right); 2-acylmethyl-2-oxazoline (A: bottom; enol tautomer shown).(2) { Reduced yields were noted employing [Ni(OH 2 ) 6 ](NO 3 ) 2 or [Ni(OH 2 ) 6 ]Cl 2 .This journal is a Polymerisation conditions: 1 h at 60 C; 20 mmol of 3a in 2 mL of C 7 H 8 ; 3 mL (2.7 g; 0.026 mol) of styrene in 7 mL C 7 H 8 . This journal is

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Bis(2-hydroxyiminomethyl-6-methoxyphenolato-κ²O¹,N)nickel(II)

Abstract: The Ni atom in the title compound, [Ni(C8H8NO3)2], lies on a center of inversion in a square-planar coordination enviroment. The hydroxyl group of one anion forms a short hydrogen bond to the metal-coordinated O atom of the other anion.

Cited by 4 publications

References 8 publications

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Synthesis and characterisation of κ²-N,O-oxazoline-enolate complexes of nickel(ii): explorations in coordination chemistry and metal-mediated polymerisation

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Bis(2-hydroxyiminomethyl-6-methoxyphenolato-κ2O1,N)nickel(II)

Abstract: The Ni atom in the title compound, [Ni(C8H8NO3)2], lies on a center of inversion in a square-planar coordination enviroment. The hydroxyl group of one anion forms a short hydrogen bond to the metal-coordinated O atom of the other anion.

Cited by 4 publications

References 8 publications

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

Piezochromism in Nickel Salicylaldoximato Complexes: Tuning Crystal‐Field Splitting with High Pressure

A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Synthesis and characterisation of κ2-N,O-oxazoline-enolate complexes of nickel(ii): explorations in coordination chemistry and metal-mediated polymerisation

Contact Info

Product

Resources

About

Bis(2-hydroxyiminomethyl-6-methoxyphenolato-κ²O¹,N)nickel(II)

Synthesis and characterisation of κ²-N,O-oxazoline-enolate complexes of nickel(ii): explorations in coordination chemistry and metal-mediated polymerisation