Ligands table

Bhattacharjee et al. [79] introduced another new catalyst based on a Pd complex containing both acetate and benzoyl pyridine ligands (Table 6). This was developed to hydrogenate liquid carboxylated nitrile rubber (L-XNBR) [80]. Selective hydrogenation of C=C in L-... 

As described previously, lipophilic monoimidazole ligands form 2 1 complexes with the Zn2 + ion (n = 2 in Scheme 2) as active catalysts except for some sterically hindered ligands (Table 3, 5, 7), and bisimidazole ligands form 1 1 complexes (n = 1 in Scheme 2, Table 5). In this chiral system, the latter 1 1 complex accords with kinetic analyses for both L-47 and L,L-49 ligands as shown in Fig. 12 and Table 11. These conclusions seem to be reasonable since monoimidazole derivatives have only one imidazole nitrogen, while the other bisimidazole and chiral ligands have more than two nitrogen atoms which can effectively coordinate to the Zn2 + ion. 

Study of a series of complexes trans-Pt(PEt3)2HX shows a pronounced dependence of i/(Pt-H) upon the trans-ligand (Table 3.18). 

The Access Tables have been laid out in a manner that parallels the foregoing chapters. The first three tables provide listings according to element and ligand. Tables 4 to 18 and 20 correspond to the chapters of Volumes 1 and 5. Table 13 covers ligand synthesis. Two additional tables cover physical techniques for the study of complexes and thermochemistry. The final table is entitled Special Topics and includes aspects that defied inclusion under earlier headings and these aspects are listed purely in alphabetical order. 

Table I outlines the major types of 1,1-dithiolato ligands. Table lA shows the related dithio acid complexes derived from dithiophosphinic, dithiocacodylic (dithioarsinic), dithioarsenate, and dithiophosphoric acids. The complexes most intensively studied to date are those of the dithiocarbamates and dithiophosphates.

TiN nanoparticles are produced via ammonolysis of TiCl4Ln complexes (L = donor ligand. Table 19.1) in the solid state (Eq. 1) [24]. 

Electronic stmcture calculations reveal that the actual EEG in linear Au(l) and square-planar Au(lll) complexes is not merely a matter of 5d occupation. Instead, the EEG is markedly determined by AO populations, including Au core 5p as well as valence 6p orbitals and further by the charge in the overlap area (AOAuAOug) and on the ligands (Table 7.14). 

The CB2 receptor has been shown to tolerate shorter C3 side chains than the CBi receptor and the Huffman group has exploited this in combination with Cl modifications to develop highly selective CB2 receptor ligands (Tables 6.31 and 6.32) [214, 215]. 

These processes include the thermal decomposition of all polynuclear clusters and also binuclear clusters with organic cations and ligands (Table 3). As a rule,... 

The individual free energy components show the relative contributions from the electrostatic and the van der Waals interactions. The free energy change for the annihilation of the charges on the ligand in the complex and in solution is almost identical within the limits of the estimation. However, the van der Waals free energy component for the complex is more than that of the isolated ligand (Table 1). 

Many of the multidentate features observed for aminocarboxylate complexes of bismuth are evident in a small, diverse group of complexes involving hydroxyamine and aminoalkoxides ligands (Table XVI). Most of the examples in this section may be considered unique and represent unusual structural arrangements. 

In spite of the extensive homology in the key amino acids of the LBD (Fig. 1.3), each of the two ER isoforms has different affinities for natural and synthetic ligands (Table 1.1). This suggests that the responses are very different in tissues dominated by one or another receptor (Kuiper et al. 1996). 

Lanthanide(III) isopropoxides show higher activities in MPV reductions than Al(OiPr)3, enabling their use in truly catalytic quantities (see Table 20.7 compare entry 2 with entries 3 to 6). Aluminum-catalyzed MPVO reactions can be enhanced by the use of TFA as additive (Table 20.7, entry 11) [87, 88], by utilizing bidentate ligands (Table 20.7, entry 14) [89] or by using binuclear catalysts (Table 20.7, entries 15 and 16) [8, 9]. With bidentate ligands, the aluminum catalyst does not form large clusters as it does in aluminum(III) isopropoxide. This increase in availability per aluminum ion increases the catalytic activity. Lanthanide-catalyzed reactions have been improved by the in-situ preparation of the catalyst the metal is treated with iodide in 2-propanol as the solvent (Table 20.7, entries 17-20) [90]. Lanthanide triflates have also been reported to possess excellent catalytic properties [91]. 

This mechanism is supported by identical dissociation and racemization rate constants. This further implies either that the bis species M(AA)2 is racemic as formed, or that it may racemize (by a cis-trans change, or by a dissociative or intramolecular path) more rapidly than it re-forms iris in the dynamic equilibrium (7.23). Identical activation parameters for the dissociation (to the bis species) and racemization in aqueous acid (Table 7.5) and other solvents of Nifphen) " and Ni(bpy)3 indicate that these ions racemize by an intermolecular mechanism. This is the only such example for an M(phen)"+ or M(bpy) + species (see Table 7.5) although recently it has been observed that Fe(bps)3 (bps is the disulfonated phenanthroline ligand shown in 13, Chap. 1) but not Fe(phen)3+ also racemizes predominantly by a dissociative mechanism in water. For the other tr/s-phenanthroline complexes (and for Fe(bps)3 in MeOH rich, MeOH/HjO mixtures ) an intramolecular mechanism pertains since the racemization rate constant is larger than that for complete dissociation of one ligand, Table 7.5. 

Vanadium(III) reacts with O2 and CIO4 and is easily hydrolyzed (pA = 3.0), all important points to consider in studying its reaction kinetics. An 4 mechanism is favored for H2O exchange (Table 4.5) and for other ligand substitutions. This is supported by the activation parameters and the correlation of with the basicity of the entering ligand (Table 8.2). - ... 

In this and subsequent studies [41 14], Takeuchi and coworkers described the scope and selectivity of catalysts derived from [fr(COD)Cl]2 and achiral phosphorus ligands. Many of the trends that they uncovered have also been observed with more recently developed catalyst systems derived from chiral phosphoramidite ligands (Table 1). 

On the other hand, for cobalt-germanium complexes, the stereochemistry strongly depends on ligand (Table 3). 

On the basis of their previous experiences with lithium borates coordinated by substituted ligands. Barthel and co-workers modified the chelatophos-phate anion by placing various numbers of fluorines on the aromatic ligands. Table 13 lists these modified salts and their major physical properties. As expected, the introduction of the electron-with-drawing fluorines did promote the salt dissociation and reduce the basicity of phosphate anion, resulting in increased ion conductivity and anodic stability. The phosphate with the perfluorinated aromatic ligands showed an anodic decomposition limit of 4.3 V on Pt in EC/DEC solution. So far. these modified lithium phosphates have attracted only academic interest, and their future in lithium ion cell applications remains to be determined by more detailed studies. 

Substitutions with N,N-diacylamines are best carried out under salt-free conditions in order to minimize the concentration of base in the reaction medium and to circumvent the low solubility of salts in THF. For example, potassium phthalimide could not be reacted in THF because of its insolubility. The reaction under salt-free conditions proceeded smoothly even with LI as the ligand (Table 9.3). 

The formal electrode potentials of diynyl complexes are greatly influenced by the nature of the other supporting ligands (Table V). For example, the cyclic voltamograms (CVs) of the iron complexes Fe(C=CC=CSiMe3)(CO)2(/ -C5R5)... 

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