Configuration of Co

Figure 2.14. The molecular orbitals of gas phase carbon monoxide, (a) Energy diagram indicating how the molecular orbitals arise from the combination of atomic orbitals of carbon (C) and oxygen (O). Conventional arrows are used to indicate the spin orientations of electrons in the occupied orbitals. Asterisks denote antibonding molecular orbitals, (b) Spatial distributions of key orbitals involved in the chemisorption of carbon monoxide. Barring indicates empty orbitals.5 (c) Electronic configurations of CO and NO in vacuum as compared to the density of states of a Pt(lll) cluster.11 Reprinted from ref. 11 with permission from Elsevier Science.

Figure4.19 The four different adsorption configurations of CO on metal surfaces can be distinguished by their IR activity.

The absolute configuration of [Co(glygly)]- is known45. The complex has C2-symmetry and the antipodes 16a and 16b have been separated by chromatography on starch46. In the coordination octahedron the tridentate dipeptide ligand takes a... 

The most stable configuration of CO on NiO was found to be OC—Ni. This geometry was of lower energy than CO—Ni, including bonding to the oxide ion for all charges on Ni. Thus, the IR bands are attributed to bonding between CO and metal ions on the NiO surface. 

Problem 8.1 Compare the electronic configurations of CO, which is a linear molecule (check your answer to Problem 1.6, p. 25), and H->0, which iias a bond angle of 105. ... 

Fig. 17.1 V Oj surface with different termination and degrees of perfection. Top view of stepped (top), reduced (vanadium-terminated) (middle) and oxidized (vanadyl-terminated) (bottom) V203(0001) surface. Possible configurations of CO adsorbed on different sites are included reprinted from [12] with permission. Copyright (2007) Springer...

Cobaltammines, including Co(NH3)3F3 (but not K3C0F6, which has A/eff. = 5-3 BM), are diamagnetic except in special cases where an unpaired electron is introduced with a ligand such as OJ (see later). Their stability is presumably associated with the fact that with 12 bonding electrons added to the d configuration of Co there are 18 electrons to fill the 9 available orbitals for Cr ... 

Our own cluster calculations were performed at different levels of approximation. We started with a free Za O cluster with the wurtzite-hke structure of bulk ZnO [128]. This cluster is shown in Fig. 4a. It has the advantage that its dipole moment is still so small (in contrast to the Zn O cluster shown in Fig. lb) that it will not affect the results too much. Furthermore, it contains threefold (3C) and twofold (2C) coordinated Zn and O atoms and can therefore serve as a model for threefold coordinated Zn atoms on the terraces of the (0001) plane or at edges on the (10-10) plane as well as for twofold coordinated Zn atoms at various types of corners. The results for all those configurations of CO on Zn404 which exhibit an attractive interaction are collected in Table 6. They show without any doubt that CO will only bind to Zn atoms, with... 

FIGURE 50.12 (a) Schematic of ITP/CE assay protocol. Configurations of co-ions are also shown at each... 

Figure 5 Electronic configurations of Co and Co in ammonia (adapted from Cotton and...

SOLUTION The electron configuration of Co is [Ar]3high-spin and low-spin distributions in the d orbitals are... 

Figure 6.10 Skin/core configuration of co-injection moulding...

Co(OOOl) is a kind of hexagonal close packed surface, being a model system since it is relatively stable and simple. The typical adsorption configuration of CO adsorption on Co(OOOl) is shown in Fig. 3. As listed in Table 1, the adsorption of CO on Co(OOOl) prefers on top sites with an adsorption energy of 1.60 1.90 eV, which is 0.3 0.6eV higher than the experimental results of 1.35 eV and 1.32 0.13 eV. This divergence comes from the inaccurate description of the chemical bond of adsorbed CO molecule by DFT methods. 

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