Preparation and physical properties of trinuclear oxo-centered manganese complexes of the general formulation (Mn/sub 3/O(O/sub 2/CR)/sub 6/L/sub 3/)/sup 0,+/ (R = Me or Ph; L = a neutral donor group) and the crystal structures of (Mn/sub 3/O(O/sub 2/CMe)/sub 6/(pyr)/sub 3/)(pyr) and (Mn/sub 3/O(O/sub 2/CPh)/sub 6/(pyr)/sub 2/(H/sub 2/O)) x 0. 5 MeCN
The reaction of N-n-Bu/sub 4/MnO/sub 4/ with appropriate reagents in nonaqueous solvents leads to the high-yield formation of trinuclear oxo-centered Mn complexes of general formulation (Mn/sub 3/O(O/sub 2/CR)/sub 6/L/sub 3/)/sup z+/ (1, R = Me, L = pry, z = 1; 2, R = Me, L = pyr, z = 0, monopyridine solvate; 3, R = Me, L = pyr, z = 0, unsolvated; 4, R = Ph, L/sub 3/ = (pyr)/sub 2/(H/sub 2/O), z = 0; 5, R = Me, L = HIm, z = 1; pyr = pyridine, HIm = imidazole). The crystal structures of complexes 2 and 4 have been determined. Complex 2 crystallizes in rhombohedral space group R32 with (at -50 /sub 0/C) a = b = 17.552 (6) A, c = 10.918 (3) A, ..gamma.. = 120.00 (1)/sup 0/, and Z = 3. A total of 1546 unique data with F > 3sigma(F) were refined to conventional values of R and R/sub w/ of 5.77 and 5.86%, respectively. Complex 4 crystallizes in monoclinic space group P2/sub 1/ with (at -156 /sup 0/C) a = 15.058 (10) A, b = 23.600 (17) A, c = 14.959 (10) A, ..beta.. = 91.01 (3)/sup 0/, and Z = 2. Both 2 and 4 posses an oxo-centered Mn/sub 3/O unit characteristic of basic carboxylates with peripheral ligation provided by bridging carboxylate and terminal pyr (or H/sub 2/O) groups.
- Research Organization:
- Indiana Univ., Bloomington
- OSTI ID:
- 5954571
- Journal Information:
- J. Am. Chem. Soc.; (United States), Vol. 109:19
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
14 SOLAR ENERGY
ALKANES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
PHYSICAL PROPERTIES
MANGANESE COMPLEXES
OXYGEN COMPLEXES
PHOSPHINES
PYRIDINES
EXPERIMENTAL DATA
SPACE GROUPS
AZINES
COMPLEXES
DATA
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
140505 - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)