✦ LIBER ✦
Pyrazolylborate Nickel(II) Complexes as Catalysts for the Formation of Polyketones from Ethene and Carbon Monoxide − Partial Hydrolysis of the Bis(pyrazolyl)borate Yields a Pyrazolyl(hydroxo)borate Ligand
✍ Scribed by Wolfgang Kläui; Barbara Turkowski; Gerd Rheinwald; Heinrich Lang
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 268 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
The new nickel(II) complex [ Ni{BBN(pz) 2 }(o-tol)(PPh 3 )] (1) of the bis(pyrazolyl)borate ligand [BBN(pz) 2 ] -(BBN = 1,5 borabicyclo[3.3.1]nonane) has been prepared by reaction of [Ni-Br(o-tol)(PPh 3 ) 2 ] with K[BBN(pz) 2 ]. In the presence of moisture this reaction yields the nickel(II) complex [Ni{BBN(pz)(OH)}(o-tol)(PPh 3 )] (2). The hydroxoborate ligand [BBN(pz)(OH)] -acts as an N,O-chelate ligand in 2.