Bridged Mixed Valence Phthalocyaninato-Metal Compounds

1990 ◽  
pp. 163-169 ◽  
Author(s):  
A. Hirsch ◽  
M. Hanack
Keyword(s):  
Mixed Valence ◽  
Metal Compounds

Linear Chain Bis(α,β-dionedioximato)metal Compounds of the Nickel Triad: Solid State Design by Molecular Engineering

1977 ◽  
Vol 32 (5) ◽  
pp. 516-527 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
R. Lehmann ◽  
A. Poveda ◽  
H. H. Rupp ◽  
...  
Keyword(s):  
Solid State ◽  
Linear Chain ◽  
Mixed Valence ◽  
Structural Data ◽  
Molecular Engineering ◽  
Complex Molecules ◽  
Metal Compounds ◽  
Metal Interactions ◽  
Wide Range ◽  
Metal Metal

Chemical and structural data of numerous bis(α,β-dionedioximato)metal(II) compounds are summarized. All of them crystallize in columns but principally two different kinds of molecular arrangements occur in the solids. In one phase the molecular planes are inclined to the direction of the linear metal chains with an angle different from 90°. This allows only indirect interactions between the metal ions via the ligand. (“M—L—M” stacking.) The other modification consists of molecules with their planes perpendicular to the M—M-chains. This form allows direct metal-metal contacts (“M—M” modification). Depending on a few molecular parameters a “M—L—M” or a “M—M” stacking is obtained upon crystallization. Since for those compounds which could be isolated in both modifications the M—L—M form has the higher density it is concluded that only stronger M—M interactions stabilize the less dense M—M forms.A wide range of metal-metal separations with a lower limit of 3.15 Å in mixed valence systems are found in different “M—M” compounds. In any case the intrachain metal-metal distances are reduced considerably upon oxidation of the bivalent complex molecules. The influence of “electronic” and “sterical” parameters of the complex molecules on the intermolecular metal interactions and on the type of columns in the solid state is discussed.

Longitudinal lattice modes of mixed valence-mixed metal compounds of platinum and palladium

1980 ◽  
Vol 45 (3) ◽  
pp. 393-399 ◽  
Author(s):  
C.E. Paraskevaidis ◽  
C. Papatriantafillou
Keyword(s):  
Mixed Valence ◽  
Metal Compounds ◽  
Mixed Metal ◽  
Lattice Modes

Polymeric, Mixed-Valence Transition Metal Compounds

1974 ◽  
pp. 66-75 ◽  
Author(s):  
GILBERT M. BROWN ◽  
ROBERT W. CALLAHAN ◽  
EUGENE C. JOHNSON ◽  
THOMAS J. MEYER ◽  
TOM RAY WEAVER
Keyword(s):  
Transition Metal ◽  
Mixed Valence ◽  
Transition Metal Compounds ◽  
Valence Transition ◽  
Metal Compounds

Synthesis of bridged mixed valence macrocyclic metal compounds

1989 ◽  
Vol 29 (2-3) ◽  
pp. 9-13 ◽  
Author(s):  
M. Hanack ◽  
A. Hirsch
Keyword(s):  
Mixed Valence ◽  
Metal Compounds

Stability of CDW and SDW in halogen-bridged mixed-valence transition-metal compounds

2001 ◽  
Vol 122 (2) ◽  
pp. 305-309 ◽  
Author(s):  
J.H. Wei ◽  
J.Q. Zhao ◽  
D.S. Liu ◽  
S.J. Xie ◽  
L.M. Mei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Mixed Valence ◽  
Transition Metal Compounds ◽  
Valence Transition ◽  
Metal Compounds
Sign in / Sign up

Export Citation Format

Share Document