Alkali metal intercalation compounds

In alkali metal intercalation compounds, the guest is ionised in the host, donating its outer s electron to the host s electronic energy levels. Thus there are two aspects to consider, the sites where the ion resides, and the energy levels or bands that the electron occupies. Guests such as water that remain neutral will only be discussed in the section on cointercalation. In some hosts, notably graphite, some guests accept electrons from the... 

IV layered transition metal dichalcogenide-alkali metal intercalation compounds. The advantage of this method is that it is carried out at room temperature and, consequently, there is less likelihood of reaction between sodium and the reaction vessel. On the other hand, this method is more difficult in that it involves the use of liquid NH3. Furthermore, undesirable side reactions may occur if the NH3 is not dried thoroughly or if the reaction vessel is not clean. For example,... 

Alkali metal intercalation in dichalcogenides is also achieved by direct reaction of the elements at around 1070 K e.g. AxMCh2 whereM=V, Nb or Ta) in sealed tubes. Alkali metal intercalation compounds with dichalcogenides form hydrated phases, A HjOJy MCh2, just like some of the layered oxides e.g. 

Table 3 Graphite-alkali metal intercalation compounds...

A variety of chemical reagents may also be used to form alkali metal intercalation compounds. The first compounds of the dichalcogenides were prepared by RiidorfF, who reacted the host lattices with liquid ammonia solutions of the alkali... 

Figure 19 Compositions of the alkali metal intercalation compounds of TiS2 and ZrS2. (Reprinted with permission from Ref. 4, by permission of Oxford University Press). The numerals refer to the stage, and a, b to different iayer stackings (see text)...

Matsuzaki, S., M. Taniguchi, M Semo,Polymerization of benzene occluded in graphite-alkali metal intercalation compounds. Synthetic metals, 1986,16(3), 343-348. 

In this section we limit our discussion to a general presentation of the alkali-metal intercalation compounds the synthesis of ICs and the geometrical factors affecting the intercalation in lamellar compounds, i.e., transition-metal dichalcogenides and transition-metal oxides are discussed. The electronic side is described in the following Chapter. 

Rouxel J (1978) Alkali metal intercalation compounds of transition metal chalcogenides TX2, TX3 and TX4 chacogenides. In Levy F (ed) Intercalated layer materials. Reidel, Dordrecht, pp 201-250... 

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