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Complete Nitrogen Coordination in Rare Earth Bipyridine Pyrrolate Complexes from Pyrrole under Solvothermal Conditions: [Ln(Pyr) 3 (Bipy) 2 ], Ln = Pr, Yb
Author(s) -
Quitmann Catharina C.,
MüllerBuschbaum Klaus
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500090
Subject(s) - praseodymium , ytterbium , molecule , lanthanide , chemistry , infrared spectroscopy , crystallography , monomer , pyrrole , 2,2' bipyridine , ion , amine gas treating , crystal structure , solvothermal synthesis , inorganic chemistry , materials science , organic chemistry , doping , polymer , optoelectronics
The compounds [Ln(Pyr) 3 (Bipy) 2 ], Ln = Pr ( 1 ), Yb ( 2 ), (Pyr – = pyrrolate anion, C 4 H 4 N − ; Bipy = 2,2′‐bipyridyl, C 10 H 8 N 2 ) were obtained by the solvothermal reaction of pyrrole with praseodymium and ytterbium metal and the amine bipyridine. Yellow‐green single crystals of 1 and yellow crystals of 2 are formed next to dark green solutions. 1 and 2 are isotypic and exhibit monomeric molecules with a complete nitrogen coordination of three pyrrolate anions and two bipyridine molecules around the trivalent rare earth ions. Thus co‐coordination with Bipy renders unsubstituted pyrrolates of the rare earth elements feasible from solvothermal conditions in addition to previous low‐temperature syntheses. The products were investigated by X‐ray single crystal diffraction, Mid IR and Far IR spectroscopy.