Premium
Synthesis and Crystal Structure of a Peroxo‐Bridged Binuclear Rhodium (III) Complex and its Superoxo‐Bridged Analogue
Author(s) -
Springborg John,
Zehnder Margareta
Publication year - 1984
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19840670825
Subject(s) - chemistry , orthorhombic crystal system , monoclinic crystal system , crystallography , planarity testing , dihedral angle , crystal structure , rhodium , lattice constant , enantiopure drug , stereochemistry , diffraction , molecule , catalysis , hydrogen bond , biochemistry , physics , organic chemistry , optics , enantioselective synthesis
The reaction of the ammonia diol [(NH 3 ) 4 Rh(OH) 2 Rh(NH 3 ) 4 ] 4+ with H 2 O 2 Yields among other products a peroxo‐bridged dimeric species [(NH 3 ) 4 Rh(O 2 )(OH)Rh(NH 3 ) 3 (H 2 O)](CIO 4 ) 3 . Its structure was determined by single‐crystal X‐ray diffraction. The crystals are monoclinic with space group P 2 1 / n and lattice constants a =12.269 (5) Å, b =10.769(4) Å, c =15.964(4) Å, β=107.17(3)°. The dihedral angle of the RhOORh group in the bimetallic ring deviates by 62δ from planarity. The peroxo‐bridged complex was found to disproportionate in 1 M HCIO 4 and a red superoxo‐bridged complex. [(NH 3 ) 4 Rh(O 2 )(OH)Rh(NH 3 ) 3 (H 2 O)](NO 3 ) 4 , was isolated. Its structure was solved by single‐crystal X‐ray diffraction. The crystals are orthorhombic with space group Pna 2 , and lattice constants a =14.997(5) Å, b =11.952(4) Å, C=10.489(4) Å. The dihedral angle off the RhOORh group deviates by 7δ from planarity.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom