Bond feature

Cycles or chains are respectively specified with the Rn or Ch query bond features. 

S/D (Single/Double bonds) query bond features added if tautomers can be built from sample structure. 

Group-IIIB-group-IIIB bonds feature in the low-valent chalcogenides of Al, Ga and In shown in Table 1. These involve [Al—Al] ", [Ga—Ga], [In—In] or [In—In—In] in the solid state. The discrete compounds are synthesized by heating stoichiometric mixtures of the metal and S, Se or Te, typically in evacuated quartz... 

In a recent study of the transferability of moments, it has shown that stable trends are actually observed for the chemical bond features along investigated test peptide chains (Figure 6-4 and Table 6-4). 

The hybrid structure F includes charge and bond features of both D and E. 

Molecules having terminal groups with non-conjugated double bonds feature nonconservative spectra. 

As indicated in Table 3.39, an alternative styx = 3103 structure can be envisioned. This can be achieved, e.g., by replacing a chosen tbhb, obb bond pair with anewTBBB, obh bond pattern, as shown in the styx = 3103 entry of Table 3.41(a). The asymmetrical 3103 structure seems much less suitable to describe the actual bonding features of B4Hi0, and the 4012 structure is therefore usually considered to be preferred on intuitive grounds. 

The WGS reaction is a reversible reaction that is, the WGS reaction attains equilibrium with the reverse WGS reaction. Thus, the fact that the WGS reaction is promoted by H20 (a reactant), in turn implies that the reverse WGS reaction may also be promoted by a reactant, H2 or C02. In fact, the decomposition of the surface formates produced from H2+C02 was promoted 8-10 times by gas-phase hydrogen. The WGS and reverse WGS reactions conceivably proceed on different formate sites of the ZnO surface unlike usual catalytic reaction kinetics, while the occurrence of the reactant-promoted reactions does not violate the principle of microscopic reversibility. The activation energy for the decomposition of the formates (produced from H20+CO) in vacuum is 155 kJ/mol, and the activation energy for the decomposition of the formates (produced from H2+C02) in vacuum is 171 kJ/mol. The selectivity for the decomposition of the formates produced from H20+ CO at 533 K is 74% for H20 + CO and 26% for H2+C02, while the selectivity for the decomposition of the formates produced from H2+C02 at 533 K is 71% for H2+C02 and 29% for H20+C0 as shown in Scheme 8.3. The drastic difference in selectivity is not presently understood. It is clear, however, that this should not be ascribed to the difference of the bonding feature in the zinc formate species because v(CH), vav(OCO), and v/OCO) for both bidentate formates produced from H20+C0 and H2+C02 show nearly the same frequencies. Note that the origin (HzO+CO or H2+C02) from which the formate is produced is remembered as a main decomposition path under vacuum, while the origin is forgotten by coadsorbed H20. 

By writing about complexes containing triple bonds between phosphorus and transition metals, one has to take into account the triple-bond character of phosphinidene complexes which are in a nearly linear coordination mode (type C) in contrast to the usual bent coordination mode D possessing typical double-bond features. Due to the additional r-donation bonding ability of the PR moiety to the metal atom in type C and the observed bond lengths, this type of complexes has to be included into the classes of metal-phosphorus triple bond compounds. Thus, at the end of this review will appear a chapter highlighting the appropriate compounds of type C. 

More recently, several new families of compounds have been found that exhibit bonding features different from what is normally observed in complexes 7 and 8 16,17 jjg, classes can be classified as compounds with interligand hyper-... 

The Bonding Evolution Theory, briefly presented in Appendix B, provides a description of the bonding features of a system, along with their evolution accompanying a reaction path. It relies on the variation of the ELF topological profile as a function of nuclear coordinates. The ELF makes a partition of the molecular space into open sets having a... 

The bonding features in the charge density are pronounced in crystals with extended covalent networks. The availability of perfect silicon crystals has allowed the measurement of uncommonly accurate structure factors, of millielectron accuracy. The data have served as a test of experimental formalisms for charge density analysis, and at the same time have provided a stringent criterion for quantum-mechanical methods. 

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