New mixed-ligand diruthenium(II) compound. Synthesis and characterization of (Ru/sub 2/Cl(Me/sub 2/PCH/sub 2/PMe/sub 2/)/sub 2/(PhNpy)/sub 2/)(BPh/sub 4/)
The title compound was prepared by reacting Ru/sub 2/Cl(O/sub 2/CCH/sub 3/)/sub 2/(PhNpy)/sub 2/(PhNHpy) and (dimethylphosphino)methane (dmpm) in the presence of chlorotrimethylsilane in toluene. The compound was isolated as a crystalline mass by cooling a methanolic solution of the complex in the presence of Na(BPh/sub 4/). The crystals of composition (Ru/sub 2/Cl(dmpm)/sub 2/(PhNpy)/sub 2/)(BPh/sub 4/).1.5MeOH belong to the monoclinic system, space group P2/sub 1//n, with the following unit cell dimensions: a = 14.064 (5) A, b = 24.047 (8) A, c = 18.642 (4) A, ..cap alpha.. = ..gamma.. = 90/sup 0/, ..beta.. = 110.52 (2)/sup 0/, V = 5905 (3) A/sup 3/, Z = 4. The cationic species (Ru/sub 2/Cl(dmpm)/sub 2/(PhNpy)/sub 2/)/sup +/ consists of a diruthenium(II) core held by two dmpm and two PhNpy/sup -/ ligands. The orientation of the PhNpy/sup -/ ligands is unidirectional. The ruthenium that is bonded to pyridine nitrogens has an axial Cl/sup -/ ligand while the axial site on the other ruthenium is vacant because of two pendant phenyl rings on the amine nitrogen atoms. The Ru-Ru distance is 2.340 (2) A. The Ru-Cl, average Ru-P, and average Ru-N distances are 2.480 (5) A, 2.396 (5) A, and 2.122 (12) A, respectively. The average torsion angle in N-Ru-Ru-N and P-Ru-Ru-P is 19.84/sup 0/. The compound is moderately stable in air in the solid state and is soluble in common organic solvents. The complex is paramagnetic and has a magnetic moment of 2.6 ..mu../sub B/ (at 308K), corresponding to two unpaired spins. The metal-metal bond order is 2.0 according to the sigma/sup 2/..pi../sup 4/delta/sup 2/)(delta*..pi..*)/sup 4/ ground-state electronic configuration. 29 references, 4 figures, 3 tables.
- Research Organization:
- Texas A and M Univ., College Station
- OSTI ID:
- 6036802
- Journal Information:
- Inorg. Chem.; (United States), Vol. 25:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photochemical dealkylation of the bridging phosphite-type ligand (Pr[sup i]O)[sub 2]PN(Et)P(OPr[sup i])[sub 2] in the electronically unsaturated diruthenium complex [Ru[sub 2]([mu][sub sb]-CO)[sub 2](CO)[sub 2]([mu]-(Pr[sup i]O)[sub 2]PN(Et)P(OPr[sup i])[sub 2])[sub 2]]
Synthesis, structure, and structural dynamics of a remarkably crowded rhodium(I) dimer: (Rh/sub 2/((Me/sub 2/PCH/sub 2/)/sub 2/(CO)/sub 2/)(B(C/sub 6/H/sub 5/)/sub 4/)/sub 2/
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
14 SOLAR ENERGY
CHLORINE COMPOUNDS
CHEMICAL PREPARATION
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
PHOSPHINES
PYRIDINES
RUTHENIUM COMPOUNDS
ENERGY LEVELS
EXPERIMENTAL DATA
LATTICE PARAMETERS
LIGANDS
REDOX POTENTIAL
SPACE GROUPS
VOLTAMETRY
AZINES
DATA
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC NITROGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
400500 - Photochemistry
140505 - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)