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Linear and Bent Oxo‐Bridged Dimers of Ruthenium Pyrazole Nitrosyls
Author(s) -
Bohle D. Scott,
Sagan Elizabeth S.
Publication year - 2000
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200007)2000:7<1609::aid-ejic1609>3.0.co;2-1
Subject(s) - chemistry , ruthenium , bent molecular geometry , crystallography , pyrazole , delocalized electron , ligand (biochemistry) , thionyl chloride , nuclear magnetic resonance spectroscopy , spectroscopy , anhydrous , monomer , linear molecular geometry , infrared spectroscopy , stereochemistry , molecule , chloride , polymer , organic chemistry , catalysis , biochemistry , physics , receptor , quantum mechanics
The nitrosylation of RuCl 3 ·(H 2 O) x in thionyl chloride affords anhydrous [RuCl 3 (NO)] which, when treated with a variety of ligands L, gives [RuCl 3 (L) 2 (NO)]. For L = 3,5‐dimethylpyrazole (dmpH) it is possible to isolate and characterize the corresponding monomeric complex 1 as well as unusual oxo‐bridged dimeric products with nitrosyl ligands trans to the oxo ligand with either a linear geometry, as in trans ‐O[RuCl 2 (NO)(dmpH) 2 ] (2) and [Cl 4 (NO)Ru]O[Ru(NO)(dmpH) 4 ] (4) , or with a bent geometry, as in trans ‐O[RuCl(NO)(dmpH)(μ‐dmp)] 2 (3) . These compounds have been characterized by elemental analysis and vibrational and NMR spectroscopy, as well as by single crystal X‐ray diffraction. Collectively the structural and spectroscopic data support a delocalized π‐bonding model across the linear ON−Ru−O−Ru−NO framework.