Ligand stabilizers

Sohon G and Simon U 1995 A fasoinating new field in oolloidal soienoe small ligand stabilized metal olusters and their possible applioations in mioroeleotronies Coiioid Poiym. Sc/. 273 202... 

Pesohel S and Sohmid G 1995 First steps towards ordered monolayers of ligand stabilized gold olusters Angew. Chem. Int. Ed. Engl. 34 1442... 

The decomposition is significantly accelerated and the temperature of the first decomposition reaction is lowered to 120°C (Fig. 19.7). The decomposition rate is relatively low compared with other titanium-based dopants. The highest activity of a titanium catalyst used in alanate decomposition was observed for ligand-stabilized colloidal titanium metal [42]. 

The low-valent ferrate [Fe(CO)3(NO)] 76 or Hieber anion was discovered some 50 years ago by Hieber and Beutner [43, 44] in order to extend the Hieber base reaction [45,46], in which iron pentacarbonyl 78 reacts with alkaline bases to form the [Fe(CO)4] anion [47, 48]. Compared to its homoleptic analogue, the Hieber anion is more stable because the electron-withdrawing character of the nitrosyl ligand stabilizes the negative charge at the iron atom. 

Pello OM, Martinez-Munoz L, Parrillas V, Serrano A, Rodiiguez-Frade JM, Toro MJ, Lucas P, Monterrubio M, Martinez A, MeUado M (2008) Ligand stabilization of CXCR4/delta-opioid receptor heterodimers reveals a mechanism for immune response regulation. Eur J Immunol... 

Bardaji, M., Laguna, A., Perez, M.R. and Jones, P.G. (2002) Unexpected ring-opening reaction to a new cyanamide-fhiolate ligand stabilized as a dinuclear gold complex. Organometallics, 21, 1877. 

The aim of this chapter is to acquaint the reader the physical principles of SE tunneling devices to be used in nanoelectronics. Based on this the charge transport properties of nanocluster assemblies in one, two and three dimensions will be discussed. By means of selected examples it will be demonstrated that ligand-stabilized nanoclusters of noble metals may be suitable building blocks for nanoelectronic devices. 

Figure 4. A single ligand stabilized Ptsog-cluster between STM tip and an Au( 1 11) facet. The junction between the cluster and the substrate is built up by the ligand shell.

Figure 5. SET on a single ligand-stabilized AU55 cluster at 90 K. The junction capacitance was calculated to be 3 x 10 F by fitting. (Reprinted with permission from Ref. [20], 2004, Springer.)...

Figure 12. Schematic representation of the setup for single particle measurements by electrostatic trapping (ET). Pt denotes two freestanding Pt electrodes (dashed region). A ligand-stabilized Pd cluster is polarized by the applied voltage and attracted to the gap between the Pt electrodes. (Reprinted with permission from Ref. [29], 1997, American Institute of Physics.)...

The electrical DC and AC response of compacts of ligand-stabilized nanoclusters also reflects the electrical behavior of the 3D system [21]. At high temperature, i.e. several tens of Kelvin below room temperature, the temperature dependent DC and AC conductivity follows a simply activated behavior according to the... 

Arene and olefin compounds, pure or in admixture, are efficient ligands in promoting the aggregation of platinum atoms from mononuclear species to ligand-stabilized soluble clusters and solid-supported nanoparticles (Scheme 14). 

Figure 2. Schematic illustrations of (a) polymer-stabilized, (b) surfactant-stabilized, (c) ligand-stabilized metal nanoparticles.

Schmid, G. Ligand-stabilized Giant Metal Clusters and Colloids. In Physics and Chemistry of Materials with Low-Dimensional Structures, Kluwer Academics The Netherlands, Longh, J. L. 1994 Vol. 18, pp 107. 

Other polydentate ligands are polyamines and related ligands. Stability constants of silver(I) complexes with polyamines in dimethyl sulfoxide,419 A-methyl-substituted 4-methyldiethylene-triamines,420 or ethylene- or N- or C-methylated ethylenediamine in aqueous solution have been reported.421 The structure of the silver 1,3-diaminopropane complex, [Ag NH2(CH2)3NH2 ]-C104,422 and complex formation with 1,4-diaminobutane and 1,5-diaminopentane have been reported.423 A dinuclear silver(I) compound with ethylenediamine [(enH)Ag(en)Ag(enH)2]4+ has... 

McLeod, M.C., Kitchens, C.L. and Roberts, C.B. (2005) C02-expanded liquid deposition of ligand-stabilized nanoparticles as uniform, wide-area nanoparticle films. Langmuir, 21 (6), 2414-2418. 

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