Temperature binding

EPR investigations are necessarily carried out in frozen solution at low temperature. Room temperature binding of thiols to FeMoco has been monitored by F NMR spectroscopy using /J-CF3C6H4S as the reporter ligand. These experiments revealed that the binding of thio-late is characterized by a dynamic equilibrium between the FeMoco and thiolate (159) and that cyanide and methyl isocyanide can bind to isolated FeMoco complexed with thiol (160). 

The surface mobility coefficient ms is a phenomenological parameter that represents the net mass flow per unit gradient in surface chemical potential. The physical mechanisms of mass transport underlying this parameter are not well understood quantitatively, but some dependencies can be surmised. Surely, mobility must depend on temperature, binding energy and concentration of the diffusing species. A qualitative argument that leads to an estimate of the mobility coefficient proceeds as follows. 

Dyer R B, Einarsdottir 6, Killough P M, Lopez-Garriga J J and Woodruff W H 1989 Transient binding of photodissociated CO to of eukaryotic cytochrome oxidase at ambient temperature. Direct evidence from time-resolved infrared spectroscopy J. Am. Chem. Soc. Ill 7657-9... 

Binding and complexation data Folding processes Transition temperatures Free energies for point mutations Free energies of binding... 

In the briquetting process, ore fines usually are mixed with a binder and are formed into compact masses between two rotating roUs. The roUs exert pressures of 1.5-4.2 t/cm in forming the briquettes. In the nodulizing process, which is relatively uncommon commercially, ore fines are heated in a rotary kiln to a temperature, usually 1250—1370°C, at which the ore begins to melt and bind. The ore balls in the kiln to form nodules that are discharged and cooled. 

Poly(ethylene oxide) associates in solution with certain electrolytes (48—52). For example, high molecular weight species of poly(ethylene oxide) readily dissolve in methanol that contains 0.5 wt % KI, although the resin does not remain in methanol solution at room temperature. This salting-in effect has been attributed to ion binding, which prevents coagulation in the nonsolvent. Complexes with electrolytes, in particular lithium salts, have received widespread attention on account of the potential for using these materials in a polymeric battery. The performance of soHd electrolytes based on poly(ethylene oxide) in terms of ion transport and conductivity has been discussed (53—58). The use of complexes of poly(ethylene oxide) in analytical chemistry has also been reviewed (59). 

---