Binary structures family

The structure of Gd2Cl3 contains linear chains of trans-edge-sharing metal octahedra. However, there are distinct differences which require a separate discussion of this structure. First, the compounds R2X3 (together with SC7CI10) seem to be the only binary metal-rich (X/R < 2) halides of the rare earth metals. Second, the chains in the structure are formally derived from the Mg Xg-type cluster. Last, but not least, incorporation of interstitial atoms leads to a number of phases, whose structures are closely related to that of Gd2 CI3. The structural family is summarized in table 4. 

Muller, O. and Roy, R., The Major Ternary Structural Families and the Major Binary Structrual Families, in Crystal Chemistry of Non-Metallic Materials, Vols. 3 and 4, Springer, Berlin, Heidelberg, New York, 1974 and 1977. 

Other possible ternary structures with centred trigonal prisms To find other possible fully ordered ternary structures of the Rfi(T, M)lc family one can investigate other binary structures of the same kind which already have been found to be related to the ternary structures. There are two kinds of binary structures of interest ... 

Another subfamily of ADP-iibosylating toxins modifies G-actin (at Argl77), thereby inhibiting actin polymerization. Members of this family are, for example, C. botulinum C2 toxin and Clostridium perfringens iota toxin. These toxins are binary in structure. They consist of an enzyme component and a separate binding component, which is structurally related to the binding component of anthrax toxin [3]. 

The binary compounds of palladium and platinum show a higher diversity of structures than found for the Rh-Ir and Ru-Os systems. Aside from several other reported binary phases, four general families can be distinguished ... 

Recall that, because of the strong H-F bond, hydrofluoric acid is a weak acid with a small acid dissociation constant Ka of 6.8 x 10-4. In contrast, the other binary acids of the halogen family—HC1, HBr, and HI—are strong acids that completely dissociate in water.) The fluorosilicic acid produced, H2SiF6, is a water-soluble substance with a structure as in Fig. 6.3.1. 

The MeAPSO family further extends the structural diversity and compositional variation found in the SAPO and MeAPO molecular sieves. These quaternary frameworks have Me, Al, P and Si as framework species [27]. The MeAPSO structure types include framework topologies observed in the binary AIPO4 and ternary (SAPO, MeAPO) compositional systems and the novel structure -46 with a 0.7 nm pore. The structure of -46 has been determined [34]. 

The crystal structure of five members of the ferrioxamine family has been determined ferrioxamine Di , ferrioxamine E °, desferrioxamine E , the retro-isomer of fer-richrome E and ferrioxamine B . While all of the Fe(III)-ferrioxamine structures (Table 2) crystallize as racemic mixtures of A- and A-cis isomers , the configuration of the binary ferrioxamine-B in EhuD complex (2.0 A resolution) is A-C-trans,cis, indicating that the interaction between ferrioxamine-B and FhuD is enantioselective, and also exhibils geomelric seleclivily. 

The importance of solvents and their effects play roles in electrochemistry as well. The properties of a family of novel quaternary ammonium salts based on the bis(triflu-oromethylsulfonyl)imide and triflate anions are reported in a paper by Sun (Sun et al., 1998). Binary phase diagrams for some of their mixtures and their electrochemical windows of stability were reported. The highest conductivity observed in the pure salt systems at 25°C was 7 x 10 S cm-1. An electrochemical window of stability of up to 5V was measured on graphite electrodes. The effect of salt structure and solvent on conductivity of the salts is also discussed. 

Several families of ternary antimonides crystallize with structure types derived from those of binary types by an insertion of third component in the structure of binary compounds, i.e., LaFe4Pi2 from C0AS3, Y3Au3Sb4 from TI14P3, UsCrSbs fromMnsSis. 

A nice feature of this method is that it is easily applied to other aldose systems and to the L-family of sugars. The aldopentoses are given by the mnemonic Ribs Are eXtra Lean. While not factually correct, this phrase corresponds to the sugars ribose, arabinose, xylose, and lyxose, and the binary values of zero, one, two, and three, respectively. To access the structures of the L-family of sugars, just use your left hand. 

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