Type XY

Parylene C was included among the eadiest MIL-I-46058 (51) qualified coatings (as type XY) and has since enjoyed a reputation for superior performance in protecting and preserving the operation of electronic circuits against the detrimental effects of their operating environments. 

This set is of the type XY, that is substituent and reaction site are directly joined to each other. Calculated from e for uj,. 

For tetrahedral ions or molecules of the type XY , where X is a transition metal the vi(Fz)fvz(E) frequency ratio changes from a value of less than one to a value greater than one with the increasing mass ratio MxfMy. 

A crystal can be dissociated into molecules by means other than evaporation it can be crushed or split, and the work required to overcome the electrostatic attraction between the ions is reflected in the hardness of the crystal. For crystals of similar structure, the harder ones will contain ions with higher charges, so that MgO is harder than NaF. Crystals of the XY2 type can be built up from molecules in an analogous manner, and their properties will, in the main, be similar to those of compounds of the type XY. 

Strictly speaking, this is an energy profile for a reaction of the type XY + Z - X + YZ. However, it may be applied, in an approximate way, to other reactions. 

The excited state is unstable. The atom tends to revert to the ground state via electronic transitions of the type XY, with a more external electron of shell Y occupying the vacancy created by excitation of shell X. An energy, W = - Wy is thus released in die form of an... 

We shall now give some examples of order-disorder transformations observed in alloys of two types, XY and X3Y. 

Many interhalogen compounds are known of the type XY, XYS and XY7, where X and Y are different halogens, and the electronegativity of X is less than that of Y. 

An important aspect of one-dimensional magnetism is the nature of the magnetic interaction between the spins. It can be isotropic, as described by the spin Hamiltonian Equation (6), or anisotropic. In the axial limit the anisotropy can be of the easy-axis type (Ising anisotropy) or of the easy-plane type (XY anisotropy). The former means that the spins tend to orient parallel to a preferential direction while for the latter they orient in a plane. The physical properties of the chains are strongly influenced by the nature of the anisotropy. ... 

For scattering of the type xy - xy, four additional diagrams contribute (c-f in Fig. 11) leading to a renormalized value... 

With a few rare exceptions, the bonding in simple hydrides can be described by analogy with the HeH system. As soon as we look at bonding between atoms other than hydrogen, the situation becomes more complicated because each partner to the bond has more than one AO that can be involved. Molecules of the type XY, when X and Y are second row elements, e.g., N2 and CO, will illustrate most of the possibilities. 

The water equilibrium has the geueral mathematical form xy = constant. Compare = [H+][OH"] to this general form. A characteristic of equilibrium relationships of the type xy = constant is that when x increases, y must decrease, and vice versa. The variables are inversely proportional. 

We now consider the effect of salt concentration on a. In the simulation, first a salt-free solution of polyelectrolyte chains and their monovalent counterions are equilibrated. For specifidty, we denote the counterion as X, and there are N counterions (Zc = 1), and take the polymer to be uniformly negatively charged. Next, we add a fixed quantity of salt of either the type XY (Z+ = 1 = Z ) or the type AYz (Z + =2, Z = 1) to the system and again equilibrate the system. We then collect the statistics and compute the average number of various ions (X, Y, and A) in the counterion worm surrounding the polymer defined as above with = 2lo. We illustrate the key results only for the case of N = 100 and Cp = 8 x lO l ... 

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