Influence of the amino substituents of potentially bis ortho chelating aryl ligands (2,6- l brace R sup 1 R sup 2 NCH sub 2 r brace sub 2 C sub 6 H sub 3 ) sup minus on the synthesis and properties of their organonickel(II) complexes

Influence of the amino substituents of potentially bis ortho chelating aryl ligands (2,6- l brace R sup 1 R sup 2 NCH sub 2 r brace sub 2 C sub 6 H sub 3 ) sup minus on the synthesis and properties of their organonickel(II) complexes

Two series of square-planar organometallic Ni(II) complexes that contain various monoanionic, potentially terdentate ligands (2,6-{l brace}R{sup 1}R{sup 2}NCH{sub 2}{r brace}{sub 2}C{sub 6}H{sub 3}){sup {minus}} (=R{sup 1}R{sup 2}NCN{prime}) have been synthesized. In one series this ligand is terden...

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Bibliographic Details
Published in:Inorganic chemistry Vol. 30:15
Main Authors: van Beek, J.A.M., van Koten, G., Ramp, M.J., Coenjaarts, N.C., Goubitz, K., Zoutberg, M.C., Stam, C.H., Grove, D.M., Smeets, W.J.J., Spek, A.L.
Format: Journal Article
Language:English
Published: United States 24-07-1991
Subjects:
400201 - Chemical & Physicochemical Properties
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
COMPLEXES
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
HALOGEN COMPOUNDS
HOMOGENEOUS CATALYSIS
INFORMATION
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
NICKEL COMPLEXES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
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Summary:Two series of square-planar organometallic Ni(II) complexes that contain various monoanionic, potentially terdentate ligands (2,6-{l brace}R{sup 1}R{sup 2}NCH{sub 2}{r brace}{sub 2}C{sub 6}H{sub 3}){sup {minus}} (=R{sup 1}R{sup 2}NCN{prime}) have been synthesized. In one series this ligand is terdentate bonded to the Ni(II) center via C(ipso) and the two N donor atoms. In the other series, the Ni(II) center is bonded to a halide anion, to two phosphorus ligands, and to only C(ipso) of the R{sup 1}R{sup 2}NCN{prime} ligand. The molecular structures of three complexes have been determined by X-ray crystallographic methods and the results are reported herein. The ligand strength of the various amino groups toward the Ni(II) center decreases in the order Me{sub 2}N > Et{sub 2}N > (i-Pr)MeN > (t-Bu)MeN > (Ph)MeN. Resonance Raman spectroscopic data indicate that in solution the complexes (NiI(Et{sub 2}NCN{prime})) and (NiI((i-Pr)MeNCN{prime})) interact with added I{sub 2}. 45 refs., 6 figs., 10 tabs.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic00015a023