Spin orientation diagram

Fig. 20. Spin-orientation diagram in the Hox Tbi x Fe2 system. Filled circles, filled triangles and filled squares correspond to experimentally determined Mossbauer spectra characteristic of the (111 >, < 110 > and < 100 > axes of magnetization, respectively. Open triangles correspond to intermediate types of spectra. The broken lines are the experimentally, and the solid lines theoretically, determined boundaries of regions with different directions of magnetization.

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.

One He atom has two electrons, so a He2 cation has three electrons. Following the aufbau process, two electrons fill the lower-energy cr 1 orbital, so the third must be placed in the antibonding crj orbital in either spin orientation. A shorthand form of the MO diagram appears at right. The bond order 1... 

Fig. IV-3.—Diagram representing orientations of the spin vectors of the two electrons and the orbital angular momentum vectors of the two electrons in the extreme Paschen-Back effect for an atom with two 2 electrons. The two spins orient themselves separately in the vertical magnetic field, as do also the two orbital angular momentum vectors. Each electron spin can assume orientations such that the component of angular momentum along the field direction is represented by the quantum number m, + or — and each orbital angular momentum may orient itself in such a way that the component of the orbital angular momentum along the field direction is represented by the quantum number m +1, 0, or —1.

Figure 1.30. Schematic diagrams of the spin orientation of molecules on the surface in (a) initial state and (b) final state.

Fig. 17. Schematic diagram of relative spin orientations in a canted antiferromagnet such as MnCOa...

For the three CH3 protons in ethanol, draw diagrams similar to (10.62) showing the possible nuclear-spin orientations. Deduce the number of lines into which the adjacent CH2 proton NMR transition is split, and give the relative intensities of these hnes. 

Figure 15.3 (a) Partial density of states and respectively, in octahedral and pyramidal Co (b) total difference of electron spin orientation sites, (c) Crystal field diagram of the d-orbital... 

Fig. 6.9. Spin-spin coupling diagrams showing the possible spin orientations of the methyl and methylene protons (a) and the corresponding spectrum with these functionalities as neighboring groups (b). (Reproduced with permission from Ref. [11]. 1951 American Institute of Physics.)...

Fig. 4. Schematic diagram of the layered model for a pore (47). The two nuclear spins diffuse in an infinite layer of finite thickness d between two flat surfaces. The M axes are fixed in the layer system. The L axes are fixed in the laboratory frame, with Bq oriented at the angle P from the normal axis n. The cylindrical polar relative coordinates p, (p, and z are based on the M axis. The smallest value of p corresponding to the distance of minimal approach between the two spin bearing molecules is 5.

Rule 8 Since the spin must be conserved along the oriented line, it is necessary to introduce an additional numerical factor, 2l, with which we multiply each Gold-stone diagram. As in rule 4, / is the number of closed loops. 

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