53433-12-8Relevant articles and documents
Reaction Behavior of Decacarbonyldimetalates(2-) (M = Cr and Mo) towards the Nitrosyl Carbonyls of Iron and Cobalt
B?ttcher, Hans-Christian
, p. 410 - 412 (2017)
The reaction of the nitrosyl carbonyl complexes [Fe(NO)2(CO)2] and [Co(NO)(CO)3] with the decacarbonyldimetalates [M2(CO)10]2– (M = Cr and Mo) in THF as the solvent at room temperature was investigated. Thereby a substitution of one nitrosyl ligand towards carbon monoxide was observed in each case. Both reactions afforded the known metalate complexes [Fe(NO)(CO)3]– and [Co(CO)4]–, respectively. These species were isolated as their corresponding PPN salts [PPN+ = bis(triphenylphosphane)iminium cation] in nearly quantitative yields. The products were unambiguously identified by their IR spectroscopic and elemental analytic data as well as by their characteristic colors and melting points.
The synthesis of heteronuclear transition metal clusters derived from alkylidyne tricobalt cluster precursors. I. The reaction of (μ3-CCl)Co3(CO)9 with transition metal carbonyl anions. The crystal and molecular structure of (μ3-CCl)
Duffy, D. Neil,Kassis, Maram M.,Rae, A. David
, p. 97 - 104 (2007/10/02)
Metal exchange reactions were used to produce heterometallic clusters derived from alkylidyne tricobalt precursors. Reaction of the cluster (μ3-CCl)Co3(CO)9 with the potassium salt of (η5-C5H5)Mo(CO)3- produced (μ3/s
Synthesis and reactivity of the metal-substituted borane (CO)4CoBH2·THF. Preparation of the ambiphilic clusters (CO)9Co3C(CH2)nOH (n = 4, 5)
Basil, John D.,Aradi, Allen A.,Bhattacharyya, Nripendra K.,Rath, Nigam P.,Eigenbrot, Charles,Fehlner, Thomas P.
, p. 1260 - 1270 (2008/10/08)
The reaction Co2(CO)8 + 2BH3·THF → 2(CO)4CoBH2·THF (I) + H2 has been demonstrated to occur cleanly at -15°C in THF. I has been characterized by low-temperature 11B NMR and infrared spectroscopies as well as classical chemical analysis. The formation of I bears a remarkable similarity to that of (CO)4CoSiR3. Displacement of the bound THF of I occurs with Lewis bases, and the Lewis acidity of I relative to that of BH3·THF for SMe2 has been estimated. Displacement of [Co(CO)4]- from I occurs easily; e.g., reaction with PhMgBr yields PhBH2. I readily accepts hydride from [HFe2(CO)8]-, losing [Co(CO)4]- but reduces the CO ligands of hydride-free metal carbonylate anions. I is a very active reducing agent and above 10°C cleaves THF and condenses with hydrocarbyl and metal fragments to yield a mixture of clusters including an unusual tailed cluster (CO)9Co3C(CH2)nOH (n = 4,5) (II). A deuterium labeling experiment showed that four of the n carbons in the hydrocarbyl chain of II arise from THF. The results of an X-ray diffraction study suggest association of II in the solid state. [Crystals of II (the ratio of II with n = 5/n = 4 is 4) form in the space group R3 with unit cell parameters a = 34.409 (15) A?, b = 34.398 (21) A?, c = 8.575 (5) A?; β = γ = 90°, γ = 120°, V = 8789.8 A?3, and Z = 18. Solution was by direct methods, and all atoms were refined to R1 = 0.077 and R2 = 0.096 for 1443 independent reflections (Fo > 3σ(Fo)). Because of the disorder caused by the cocrystallization of species with different chain lengths, the last two atoms at the OH end of the chain could not be fully defined.] Association of II in solution is shown by a 1H NMR study, thereby demonstrating that II behaves as an ambiphilic cluster.
