Methanol CH3OH complexes

Similar ion-molecule reactions drive the chemistries of other atoms, such as C and N, to yield ions such as CHj" and NH3". These ions can then react with other species to form larger and more complex molecules. For example, methanol (CH3OH) may be formed by the reaction of CHj" ions with H2O molecules, followed by recombination of the product of that reaction with electrons... 

An Rh(I) complex containing CO is used industrially to synthesize acetic acid from methanol (CH3OH -I- CO CH3COOH). see also Platinum. 

Thus far we have considered the geometries of molecules having only one central atom. We can determine the overall geometry of more complex molecules by treating them as though they have multiple central atoms. Methanol (CH3OH), for example, has a central C atom and a central O atom, as shown in the following Lewis structure ... 

General procedures for the synthesis of ligands and metal complexes are shown in Scheme 1. For file synthesis of 2a acenaphthenequinone (0.38 g, 2.1 mmol) and a,a-bis(4-amino-3,5-dimethylphenyl)-toluene(Kccess) were dissolved in 50 mL of CH3OH in a round-bottom flask. Five drops of formic acid were added, and the sealed solution was stirred at 50 C overnight. After filtration, the red solid was washed with hot methanol and dried to give 1.2 g of red powder in 50 % yield. 

Our alternative approach has been to synthesize the solvento intermediate and then study its reactions in isolation. We thereby hope to show that its reactivity and steric course is inconsistent with the postulate stating that it is an intermediate in the substitution reactions. Complexes of the type cis- and trans-[Co en2 CH3OH q]+2 (7)f and cis-[Co en2 (CH3)2SO Cl]+2 32) have been prepared. We have shown in the first case that the lability of the coordinated methanol does not sufficiently explain the nonappearance of the solvento complex in the reactions of cis- and trans-[Co en2 Cb]"1" in methanol unless it is not an intermediate in the reaction. In dimethyl sulfoxide solution, cis- and trans-[Co en2 Cb] have been shown to isom-erize to an equilibrium mixture that also contains the solvento intermediate 32). 

Aluminum chloride loses its activity when dissolved in excess methanol but yields a catalyst when converted to its monomethanolate (AICI3—CH3OH). On the other hand, the dimethanolate has no catalytic activity. Nitroalkanes (such as nitromethane) form 1 1 addition complexes with aluminum chloride that modify its reactivity and are used for more selective alkylations.90... 

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