Search results for "nikkelikompleksit"

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The Instability of Ni{N(SiMe3 )2 }2 : A Fifty Year Old Transition Metal Silylamide Mystery.

2015

The characterization of the unstable Ni(II) bis(silylamide) Ni{N(SiMe3 )2 }2 (1), its THF complex Ni{N(SiMe3 )2 }2 (THF) (2), and the stable bis(pyridine) derivative trans-Ni{N(SiMe3 )2 }2 (py)2 (3), is described. Both 1 and 2 decompose at ca. 25 °C to a tetrameric Ni(I) species, [Ni{N(SiMe3 )2 }]4 (4), also obtainable from LiN(SiMe3 )2 and NiCl2 (DME). Experimental and computational data indicate that the instability of 1 is likely due to ease of reduction of Ni(II) to Ni(I) and the stabilization of 4 through dispersion forces.

Steric effectsmagneettiset ominaisuudetChemistrychemistry.chemical_elementdispersiovuorovaikutusGeneral ChemistryInstabilityCatalysisnikkelikompleksitsilyyliamidiligandisilylamidechemistry.chemical_compoundNickelCrystallographynickelTransition metalmagnetismPyridineOrganic chemistrysteeriset vuorovaikutuksetta116dispersion effectsDerivative (chemistry)steric effectsAngewandte Chemie (International ed. in English)
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The Instability of Ni{N(SiMe3)2}2: A Fifty Year Old Transition Metal Silylamide Mystery

2015

The characterization of the unstable NiII bis(silylamide) Ni{N(SiMe3)2}2 (1), its THF complex Ni{N(SiMe3)2}2(THF) (2), and the stable bis(pyridine) derivative trans-Ni{N(SiMe3)2}2(py)2 (3), is described. Both 1 and 2 decompose at ca. 25 °C to a tetrameric NiI species, [Ni{N(SiMe3)2}]4 (4), also obtainable from LiN(SiMe3)2 and NiCl2(DME). Experimental and computational data indicate that the instability of 1 is likely due to ease of reduction of NiII to NiI and the stabilization of 4 through dispersion forces. peerReviewed

magneettiset ominaisuudetdispersiovuorovaikutussteeriset vuorovaikutuksetmagnetisminikkelidispersion effectsnikkelikompleksitsilyyliamidiligandisilylamidesteric effects
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