Vielseitige Skorpionate - neue Möglichkeiten in der Koordinationschemie der Polypyrazolylborat-Liganden

Edelmann, Frank T.

doi:10.1002/1521-3757(20010504)113:9<1704::aid-ange17040>3.0.co;2-x

Angew. Chem.

2001

DOI: 10.1002/1521-3757(20010504)113:9<1704::aid-ange17040>3.0.co;2-x

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Vielseitige Skorpionate - neue Möglichkeiten in der Koordinationschemie der Polypyrazolylborat-Liganden

Frank T. Edelmann

Abstract: Vielseitiger als bisher bekannt sind die Koordinationsmöglichkeiten von Tris(pyrazolyl)borat‐Liganden (Skorpionaten). Aktuelle Arbeiten auf diesem Gebiet liefern nicht nur neue Erkenntnisse zu den elektronischen Effekten, sondern belegen auch erstmals hohe und niedrige Haptizitäten sowie neuartige Koordinationsweisen, wie die π‐Koordination eines Pyrazolylrings an Kalium (siehe Struktur). Durch originelle Synthesewege konnte darüber hinaus das Spektrum nützlicher Liganden beträchtlich erweitert werden.

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Cited by 10 publications

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Synthesis, Characterization, and Crystal Structures of Scorpionate Complexes with the Hydrotris[3‐(2′‐thienyl)pyrazol‐1‐yl]borate Ligand

et al. 2014

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Six scorpionate complexes of group 10-12 metal elements (Cu I , Cu II , Zn II , and Cd II ) containing the anionic hydrotris[3-(2Ј-thienyl)pyrazol-1-yl]borate (Tp Tn ) ligand were prepared from the reaction of the thallium(I) salt of Tp Tn with the corresponding metal acceptors in chloroform solution. The air-and heat-stable complexes were characterized by analytical and spectroscopic methods (IR, conductivity, ESI-MS, 1 H NMR and 13 C NMR solution data) and structurally characterized by single-crystal X-ray studies. The Zn II complexes [Zn-(Tp Tn )X] (X = Cl or Br) contain a tripodal tridentate Tp Tn ligand, in which the tetrahedral metal environment is completed by a halide; in [Cd(Tp Tn ) 2 ], cadmium is found in an octahedral environment coordinated by two Tp Tn ligands. In [Cu(Tp Tn )(PPh 3 )]·CHCl 3 and [Cu(Tp Tn )(OC(O)CH 3 )], Tp Tn is also coordinated in the tripodal fashion, in which the copper environment is completed by a triphenylphosphine ligand in the former complex and by a symmetrically coordinated bi-[a]

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Synthesis, Characterization, and Crystal Structures of Scorpionate Complexes with the Hydrotris[3‐(2′‐thienyl)pyrazol‐1‐yl]borate Ligand

et al. 2014

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Tris(3‐phenylpyrazolyl)methanide Complex of Calcium – Unprecedented Coordination Chemistry and Degradation Reaction

et al. 2013

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Keywords: Calcium / Scorpionates / Nitrogen heterocycles / Coordination modes / X-ray diffractionCalciation of tris(3-phenylpyrazolyl)methane in tetrahydrofuran and recrystallization from a mixture of toluene and 1,2-dimethoxyethane yielded [(dme)Ca{C(Pz Ph ) 3 } 2 ] (1). The molecular structure of this complex resembles a typical dialkylcalcium complex stabilized by long Ca-N contacts to two pyrazolyl fragments. The addition of 1,2-bis(dimethyl-[a] Institute

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s‐Block Metal Complexes with Bis‐ and Tris(pyrazolyl)methane and ‐methanide Ligands

et al. 2016

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Substituted bis-and tris(pyrazolyl)methanes and -methanides are isoelectronic with the corresponding pyrazolylsubstituted boranates, but the use of these Lewis bases in the coordination chemistry of the s-block metals has attracted attention only quite recently. Many lithium and magnesium complexes have been isolated and characterized, but for the heavier alkali and alkaline earth metals much less information is available. Beryllium complexes are unknown, due to the toxicity of this lightest alkaline earth metal. The bis-and tris(pyrazolyl)methanes and -methanides act as multidentate ligands to the metal ions and commonly bind through the pyrazolyl bases. Content

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Vielseitige Skorpionate - neue Möglichkeiten in der Koordinationschemie der Polypyrazolylborat-Liganden

Cited by 10 publications

References 47 publications

Synthesis, Characterization, and Crystal Structures of Scorpionate Complexes with the Hydrotris[3‐(2′‐thienyl)pyrazol‐1‐yl]borate Ligand

Synthesis, Characterization, and Crystal Structures of Scorpionate Complexes with the Hydrotris[3‐(2′‐thienyl)pyrazol‐1‐yl]borate Ligand

Tris(3‐phenylpyrazolyl)methanide Complex of Calcium – Unprecedented Coordination Chemistry and Degradation Reaction

s‐Block Metal Complexes with Bis‐ and Tris(pyrazolyl)methane and ‐methanide Ligands

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