ISSN:
1434-1948
Keywords:
Pyrazolato ligands
;
Rhenium
;
Manganese
;
Crystal structure
;
Heterometallic complexes
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
By reacting [Re(CO)3(Hpz)2(pz)] (Hpz = pyrazole) with [Mn(CO)5Br] in toluene in the presence of Et3N, the dinuclear complex [(CO)3Re(pz)3Mn(CO)3](Et3NH) (1) was obtained. The reaction of 1 with molecular oxygen affords the tetranuclear compound [(CO)3Re(pz)3Mn(O)3Mn(pz)3Re(CO)3](Et3NH)2 (3) or the trinuclear compound [(CO)3Re(pz)3Mn(pz)3Re(CO)3](Et3NH)2 (5) depending on the experimental conditions. Complexes 1, 3 and 5 were characterized in the solid state by single crystal X-ray diffraction analysis and were showed to contain Re···Mn interactions linked by and tris-μ2-pyrazolato bridges. In 5, a short [2.397(4) Å] tris(μ2-oxo)bridged MnIV-MnIV contact is found, leading to strong antiferromagnetic coupling of the d3 ions. The homometallic species [(CO)3Mn(pz)3Mn(CO)3](Et3NH) (2) was also prepared and found to be isostructural with 1.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
