Spheres, representing ligands

Fig. 2. Copper site in azurin. In this and subsequent figures the following conventions have been used, (a) The copper site is generally an enlargement of (b). The copper site is a dotted sphere, the ligand residues are represented by bonds connecting atoms in the side chain, and, where possible, the atoms bonded to the copper atom are identified by atom type. Ribbons represent portions of the backbone structure near the copper. In (b) of each figure, the main-chain polypeptide is represented by a ribbon fit to the main-chain coordinates, and the amino and carboxy termini are indicated by N and C, respectively, (c) A schematic version drawn from (b). Solid arrows represent main-chain regions participating in the /3 sheet roughly above the plane of the paper, while dotted or light arrows are the...

Figure 13.1 Cis (left) and trans isomers of dicMorotetraamminecobalt(III) ion. Unmarked spheres represent NH3 ligands.

Figure 1. Idealized structures of an octahedral ML8 complex (a), a face-capped octahedral M6X8L6 cluster (b), and an edge-bridged octahedral M6X12L6 cluster (c). Black, shaded, and white spheres represent metal atoms M, inner-ligands X, and terminal-ligands L, respectively. Each structure conforms to Oh symmetry.

Figure 4. A portion of the structure of Mo6CI12, featuring face-capped octahedral cluster cores linked in 2D through bridging outer chloride ligands (65). Black and white spheres represent Mo and Cl atoms, respectively. This structure type is shared by MogX (X = Br, I) and Mo6Cl12 (X — Cl, Br, I).

Figure 5. Dimensional reduction of ResSegC via incorporation of T1C1. Black, shaded, and white spheres represent Re, Se, and Cl atoms, respectively. Each added equivalent of T1C1 supplies another terminal chlorine ligand, reducing connectivity.

Figure 13 Representation of an idealised [MnII9(p,-CN)30-Mov 6] cluster core. The light grey spheres represent Mn(II) ions and the darker spheres represent Mo(V) ions and the bonds between them represent p,-cyano ligands [70],...

The chemical nature of the precursor represents the most critical component of a CVD/ALD process. Generally speaking, the choice of a particular precursor is governed by the relative stabilities of the precursor and substrate, as well as the volatility, cost, and hazards of the precursor. The coordination sphere of ligands surrounding the central metal is extremely important the organic ligands in these precursors may... 

Fig. 54. A schematic illustration of twofold interpenetrated diamondoid frameworks of fCu(L )2]X (X = BF4, PF6). The spheres represent the copper atoms, and the twisted bipyridine ligands are shown as the bet cylinders linking the copper centers together. (From Fig. 2 in Lopez, S. Kahraman, M. Harmata, M. Keller, S. W. Inorg. Chem. 1997, 36, 6138.)...

Fig. 26.16 The proton-induced conversion of a cluster-bound CO ligand to CH a cluster model for catalysed hydrogenation of CO on an Fe surface. Each green sphere represents an Fe(CO)3 unit.

Figure 21 The dicopper sites of L. polyphemus deoxy and oxyHcs. Side chains of histidine ligands are shown in wireframe representation (with epsilon nitrogen ligands to Cu). Dark blue spheres represent coppers, and cyan spheres represent oxygens. Some representative interatomic distances are indicated. Drawings were...

Fig. 8. Calculated d orbital energy level diagram for Fe(ll) in a series of ligand fields. Iron is represented as a filled sphere and ligands as open spheres.

Figure 4 Schematic representation of the S-HTj receptor subunit. The sphere represents the ligand binding area, in contact with three loops of the receptor subimit. The upper line of the boxed sequences, corresponds to the sequence of the 5-HTg receptor subunit [99] and was numbered starting from the first methionine of the signal sequence. The 3 other lines correspond to the nicotinic, glycine and GabaA a-subimit sequences, respectively. In the Mil domain, the sequence of the nicotinic a7-subunit was inserted between the S-HTg and the three other sequences.

Figure 1.4 A metal ion surrounded by (a) six unidentate ammonia ligands and (b) three bidentate ethylenediamine ligands. The system with bidentate ligands is more stable, an example of the chelate effect. Triangles represent the ligand interaction sites and the sphere represents a metal ion, such as Ni. ...

Figure 24.1 The two forms (isomers) of the complex [Co(NH3)4Cl2]. In (a) c/s-[Co(NH3)4Cl2r the two Cl ligands occupy adjacent vertices of the octahedron, whereas in (b) trcins-[Co(NH3)4Cl2r they are opposite one another. (The blue spheres represent the coordinated NH3 ligands.)... 

Table 28.1 In the Pauling model, the four subunits of hemoglobin are assumed to be arranged in a tetrahedron. Each sphere represents one bound ligand molecule. Nearest-neighbor ligand interactions are indicated by continuous lines. The table shows the count of these interactions. 

Fig. 4.2. Surface lattice structure of titanium trichloride showing (a) active site titanium ion with a ligand vacancy, and (b) a propylene molecule complexed to the titanium ion of the active site. The black sphere represent the growing polymeric chain (54). Copyright 1962 by The Chemical Society.

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