Coordination names

The stress-strain relations in arbitrary in-plane coordinates, namely Equation (4.5), are useful in the definition of the laminate stiffnesses because of the arbitrary orientation of the constituent laminae. Both Equations (4.4) and (4.5) can be thought of as stress-strain relations for the k layer of a multilayered laminate. Thus, Equation (4.5) can be written as... 

Anticipating a later argument (Section 6-22) in the theory of approximations, it is possible to replace the system of Eq. (6-1) by the other one (in polar coordinates), namely... 

The operator V2, which is known as the Laplacian, takes on a particularly simple form in Cartesian coordinates, namely,... 

Data for temperature coefficients (activation energies) given in Table 2 show one common phenomenon when plotting chemiluminescence intensity vs. temperature in Arrhenius coordinates, namely, that in the higher temperature range the activation energy is usually higher than at lower temperatures, which is... 

This system is additive and was developed originally to name coordination compounds, although it can be used in other circumstances when appropriate. For a discussion, see the Nomenclature of Inorganic Chemistry, Chapter 10. The compound to be named is considered as a central atom together with its ligands, and the name is developed by assembling the individual names of the constituents. This system has also been applied to name oxoacids and the related anions. Coordination names for oxoanions are cited in the examples throughout the text, and they are presented in detail in Section 4.4.5 (p. 69). 

Some traditional names (often without -ate endings) are still allowed, although systematic coordination names are generally preferred. 

In some cases, it may be necessary to add the charge to the name to distinguish different oxidation states or degrees of oxygenation (see also Section 4.4.5, p. 69). In most cases, coordination names are preferred for such species. 

SiCl4(C5H5N)2] is a coordination compound. Formally, one might represent SiCl4 itself as Si (or Si ) with four chloride ligands. To insist on a formulation [SiC ] would be mere pedantry. Nevertheless, a coordination name (see below) might be appropriate in some circumstances. 

Coordination names tetrahydridodiphosphorus(P—P) hexahydridoditin(iS n—5n) decahydridotetrasilicon( 3SiSi)... 

Coordination names can be proposed for all these species, for example hexaethyldiplumbane may also be named hexaethyldilead(P6—P6) or bis(trimethyl- QZ.d)(Pb—Pb). There seems no obvious advantage in the coordination names, and the substitutive names are usually used. 

Although they are not macrocyclic ligands, polyethyleneglycols behave somewhat similarly to the crown ethers regarding lanthanide complexation, as established by a number of crystal structure determinations. Thus a series of neodymium complexes shows consistent 10-coordination, namely [Nd(N03)3(tri-eg)],458 where tri-eg is triethyleneglycol, [Nd(N03)2(penta-eg)]N03,458 and [Nd(N03)2(N03)(tetra-eg)],459 where N03 is monodentate. The larger La3+ ion shows 11-coordination in [La(N03)3(tetra-eg)].460... 

The ligands in coordination names are listed in alphabetical order before the central atom name. Numerical prefixes that indicate the number of ligands are not considered in determining the ligand alphabetical order, e.g. tricarbonyl/iydrido(tributylphosphine)cobalt. 

Compounds of known composition but uncertain polymeric structure can be conveniently named by selecting a suitable subunit and prefixing poly to the compositional coordination name of the subunit. Bridging and other bonding notations are not generally employed, unless limited bonding and specific structural detail is known about the internal structure of the polymer subunit. The poly prefix is not italicized and the name of the subunit given after poly is enclosed in square brackets. For examples see Table 23. 

Determine from Emergency Response Coordinator names of any injured people. 

In the case of simnltaneons bond breaking and electron transfer, the contribntion of the eleetronic interaction to the expectation valne of the total energy ean be also obtained from an equation similar to Eq. (30) bnt now involving the density of states of the molecular orbitals p i. Now we have to consider an additional coordinate, namely the separation between the atoms of the molecule which changes during the reaction. An analytical expression... 

D-glucitol.10 The P-0-6-C-6-C-5 torsion angle is —102°. There is an intramolecular hydrogen-bond between O-5-H and one of the phosphate oxygen atoms. The three sodium ions have three different coordinations, namely, distorted tetrahedral, tetragonal pyramidal, and octahedral. 

Distances between scatterers of (0.60 0.06) A estimated from the interference fringes do not correspond to any visible distance between protons in the crystal structure. However, they correspond closely to distances between projections of proton positions onto directions corresponding to normal coordinates (namely, x, y or z as shown in Fig. 1). It appears that neutrons are scattered coherently by lines of protons quite visible in the crystal structure (see Fig. 17). The elastic scattering function presented in Fig. 16 corresponds to a double-quantum-slits experiment. The interference fringes are quite different from those observed for neutrons scattered by double-classical-slits [Zeilinger 1988]. It can be concluded that quantum entanglement is not limited to single pairs. 

Examples of the use of coordination names in the binary system are the solids hexaamminenickel dibromide, [Ni(NH3)6]Br2, and potassium hexafluorophosphate(V), K[PF6],... 

To illustrate this fact, we may consider the 2D heat transfer problem of uniform flow past a heated circular cylinder with uniform surface temperature. In this case, if we look for a solution in the asymptotic form (9-15) for low Peclet numbers, the nondimensional governing equation and boundary conditions for do are again (9-16) and (9-17), but this time are expressed in cylindrical coordinates, namely,... 

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