150433-20-8Relevant articles and documents
Synthesis, characterization and crystal structures of two 2-naphthyl substituted pyrazoles
Yang, Guang,Raptis, Raphael G.
, p. 659 - 664 (2003)
The synthesis, characterization and X-ray crystal structures of two 2-naphthyl-substituted pyrazoles - 3-(2-naphthyl) pyrazole (1) and 5-(2-naphthyl)-3-trifluoromethyl-pyrazole (3) - are reported. In addition, the isolation and structural characterization of 5-hydroxy-3-(2-naphthyl)-5-trifluoromethyl-4,5-dihydropyrazole (2), an intermediate of the synthesis of 3, is included. Two simple methods of dehydration of 2 are also presented.
Trinuclear diamagnetic nickel(II) complexes with bridging 3-arylpyrazolato ligands
Salih, Kifah S. M.,Bergner, Susann,Kelm, Harald,Sun, Yu,Gruen, Anneken,Schmitt, Yvonne,Schoch, Roland,Busch, Mark,Deibel, Naina,Braese, Stefan,Sarkar, Biprajit,Bauer, Matthias,Gerhards, Markus,Thiel, Werner R.
, p. 6049 - 6059 (2014/01/06)
Orange-red trinuclear nickel(II) complexes are obtained by reacting Ni(ClO4)2(H2O)6 with 3(5)-arylpyrazoles in the presence of a base. Herein, the diamagnetic nickel centers are coordinated in a square-pyramidal manner by four pyrazolato ligands, each of which bridges two nickel sites. The structurally unique complexes were investigated by NMR, IR, fluorescence, and X-ray spectroscopy. All seven compounds described here were structurally elucidated by single-crystal X-ray diffraction. With 3(5)-ferrocenylpyrazole as the substrate, a nonametallic system that possesses six redox-active ferrocenyl moieties was obtained. The reactions of Ni(ClO4)2(H2O)6 with 3(5)-arylpyrazoles in the presence of a base lead to pyrazolate-bridged trinuclear nickel(II) complexes. This strategy allows the introduction of a broad variety of aromatic substituents such as redox-active sites or additional phosphine donors in the periphery of the trinuclear core. Copyright
