Cluster breathing

The term cluster-breathing was suggested by the late Paolo Chini. ... 

Figure 8. Possible pathway for the complete scrambling of metal vertices in the monocapped square antiprismatic Rh, core (containing an encapsulated P atom) of the [Rh,P(CO)2i] dianion. The stereochemical nonrigidity of the rhodium polyhedron involves elongation-contraction sequences of the Rh—Rh bonds corresponding to cluster-breathing movements. ...

Table 9 SCF, second-order perturbation theory, and coupled-cluster values of the equilibrium bond length R, energy E, at R, and harmonic frequency w of the breathing mode of SnH .

There is another little point which I must mention before we draw to a close—a point which concerns the whole of these operations, and most curious and beautiful it is to see it clustering upon and associated with the bodies that concern us—oxygen, hydrogen, and carbon, in different states of their existence. I shewed you just now some powdered lead, which I set burning (rt) and you saw that the moment the fuel was brought to the air, it acted, even before it got out of the bottle—the moment the air crept in, it acted. Now, there is a case of chemical affinity by which all our operations proceed. When we breathe, the same operation is going on within us. When we bum a candle, the attraction of the dif-... 

The rate constants for reaction of precursor ions H30", NO", and 02 " with different molecules were determined experimentally. To calculate the partial pressure of the analyte [M] it is necessary to know the value of constant k for each reaction and the concentration of [MEf. The method also allows simultaneous measurement of the concentration of several analytes. Studies have shown that ions such as HaO" and N react quickly enough with various organic compounds, but 02 " reacts quickly only with small molecules such as NO, NO2, or NH3. In the case of samples containing a large amount of moisture (e.g., breath samples or head-space of aqueous solution), cluster ions such as H30 (H20)i 2,3 may be formed in... 

Cluster Size Dependence of the Velocity of Sound c and the Energies Soi of the Lowest Breathing... 

The breathing mode energies Coi calculated [128] from the cluster size dependence of the sound velocity (Table IV) are considerably lower than the LDM result for small clusters. 

Design of metal sites with strong interaction at oxide interface by EXAFS 3.2.1 CO-breathing Ru-carbido clusters on oxides... 

---