Capped square antiprismatic

Capped argon stirring (CAS), 23 264 Capped octahedron, geometry for metal coordination numbers, 7 574, 575t Capped square antiprismatic, geometry for metal coordination numbers, 7 574, 575t... 

Figure 1. The structure of c o%o-[(PMe2Ph)2(l-NiBgFlyCl2-2,4)] showing the bi-capped-square antiprismatic arrangement of the NiB cluster, which is analo-...

Figure 99 One of the capped square antiprismatic isomers of [M(bidentate)4(unidentate)]...

X-ray crystal structures have been determined for a series of [/f(L10 lH)] chelates, defining nine-coordinate capped square antiprismatic (CSAP) or inverted capped square antiprismatic structures. The acetate arms of the L10 or DOTA ligand are arranged in a propeller-like fashion above the basal plane made up of the four N donor atoms, which encompass the... 

The clusters [RugP(CO)i9( - 7 / -CHjCsHs)], " [Rh9P(CO)2i] - (Fig. 8b), and [RhioP(CO)22] , provide examples of P-atoms encapsulated in un-, mono-and Z /-capped square antiprismatic geometries, respectively. The replacement of phosphorus by arsenic in the cluster [RhioAs(CO)22] (Fig. 8c),I shows the capacity of the basic square antiprismatic cluster polyhedron to accommodate interstitial atoms of this size. Elongation of the interplanar Rh-Rh contacts results, however, suggesting that the increase in the steric demands of the central atom is accommodated, at least in part, by expansion of the metal polyhedron. 

Clusters containing a more close-packed metal framework, viz. mono-capped square antiprismatic, are exemplified by [Rh9E(CO)2i] (E = P, " As). The structure is schematically shown in Fig. 16 and it is strictly related to the trans-... 

Fig. 23. The Ci, component of the e non-bonding orbitals in a capped square antiprismatic cluster...

The fact that a degenerate single dsd isomerization of the Dy, nine-vertex tricapped trigonal prismatic B9H9 through a C4V capped square antiprismatic intermediate (Figure 1.8a) is orbitally forbidden [43] has stimulated searches... 

The interpretation of the observed proton and C PCS led to the conclusion that the two structural isomers are enantiomeric pairs of diastereoisomers differing in the octadentate ligand conformation, namely, capped square antiprismatic (SA or M) and twisted capped square antipris-matic (TSA or m) geometries, respectively (Figure 5). " The Ln + coordination polyhedral of SA and TSA have two opposite parallel faces occupied by the ligand ring nitrogen... 

PCR Polymerase Chain Reaction TSA Twisted Capped Square Antiprismatic... 

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