Carbon monoxide binding energy

Because carbon monoxide binds to the iron that is the essential part of haemoglobin, it also binds to other proteins containing the metal. This has the effect of inhibiting the metabolic processes in cells that produce energy, further incapacitating the poisoned patient. 

Huang Y, Ackers GK. Transformation of cooperative free energies between ligation systems of hemoglobin resolution of the carbon monoxide binding intermediates. Biochemistry 1996 35 704-718. 

Relatively few investigations involving palladium carbonyl clusters have been carried out, partly because palladium per se does not form stable, discrete homometallic carbonyl clusters at room temperature in either solid or solution states.114,917-922 Nevertheless, solution-phase palladium carbonyl complexes have been synthesized with other stabilizing ligands (e.g., phosphines),105,923 and carbon monoxide readily absorbs on palladium surfaces.924 Moreover, gas-phase [Pd3(CO)n]-anions (n = 1-6) have been generated and their binding energies determined via the collision-induced dissociation method.925... 

The fact that surface structure, in particular steps and coordinatively unsaturated sites, has an influence on the state and reactivity of carbon monoxide is entirely in keeping with the empirical correlation (Fig. 6) between heat of adsorption, electron binding energies, and molecular state. Elegant studies by Mason, Somorjai, and their colleagues (32, 33) have established that with Pt(lll) surfaces, dissociation occurs at the step sites only, and once these are filled carbon monoxide is adsorbed molecularly (Fig. 7). The implications of the facile dissociation of carbon monoxide by such metals as iron, molybdenum, and tungsten for the conversion of carbon monoxide into hydrocarbons (the Fischer-Tropsch process) have been emphasized and discussed by a number of people (32,34). 

Carbon monoxide serves as the sole carbon and energy source for the carboxydo bacteria under aerobic conditions. Using water as the oxygen donor, carbon monoxide oxidase catalyzes the hydroxylation of carbon monoxide, giving carbon dioxide or bicarbonate for assimilation. Most work has been carried out on the enzyme from Pseudomonas carboxydovorans.,ftJ7>W38 The activity of carbon monoxide oxidase is considerably stimulated upon anaerobic treatment with sulfide and dithionite, or by aerobic treatment with selenite. The binding of selenite to the oxidase specifically activates the CO — methylene blue reaction.1039 The molybdenum cofactor liberated from selenium-activated carbon monoxide oxidase does not contain selenium. Here, then, the... 

Furthermore, the binding energy difference between the 4a and 5a carbon monoxide molecular orbitals, A(4o-5o), varies by only 0.3 eV ( 7 7, 82-88). The vibrational spectra show tremendous differences, however. Both nickel (89) and palladium (68) form multiply coordinated carbonyl species at low CO exposures and the atop species are only seen at high coverage. 

A 3 x 3 x 3 unit cell was used to represent the interactions of CH O with a flat Cu(lll) surface (Fig. 14). The binding energies and site preferences of methoxy species (CH3O), adsorbed formaldehyde (CH20), formyl species (CHO), carbon monoxide, and hydrogen atoms were determined for the Cu(lll) surfaces. The calculations were performed with one-ninth ML coverage of the adsorbate. Table VIII is a summary of the changes in electronic... 

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