Factors influencing the formation of eight-co-ordinate metal complexes: an eight-co-ordinate phosphine complex of titanium(IV)

1966 ◽  
pp. 486 ◽  
Author(s):  
R. J. H. Clark ◽  
R. H. U. Negrotti ◽  
R. S. Nyholm
Keyword(s):  
Metal Complexes ◽  
Factors Influencing ◽  
Phosphine Complex

Metallkomplexe funktioneller Isocyanide, XIII Bis(oxazolidin-2-yliden)-Komplexe von Mangan(I) und Nickel(II) / Metal Complexes of Functional Isocyanides, XIII Bis(oxazolidin-2-ylidene) Complexes of Manganese(I) and Nickel(II)

1986 ◽  
Vol 41 (8) ◽  
pp. 1005-1010 ◽  
Author(s):  
Wolf Peter Fehlhammer ◽  
Ulrike Plaia
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonding ◽  
Metal Complexes ◽  
Crystal And Molecular Structure ◽  
Metal Carbonyl ◽  
Bonding Parameters ◽  
Factors Influencing

AbstractThe dicarbene complexes, MnBr(CO)3 [xxx] (1) and [xxx] (2), are synthesized from metal carbonyl precursors and CNCH2CH2OH . Factors influencing this 2-hydroxyalkyl isocyanide → N ,O-carbene isomerization are discussed. The crystal and molecular structure of 2 shows a distorted trigonal geometry about the central Ni atom. Extensive hydrogen bonding ((N )H ··· F 2.09, 2.38 Å ) occurs between cations and anions giving rise to infinite chains. Other pertinent bonding parameters are Ni-C (carbene) 1.860(4), 1.864(4) Å; C(carbene) [xxx] N 1.309(6), 1.304(6) Å , and C - Ni - C 97.7(2)°.

scholarly journals Self-Sorting of Two Imine-Based Metal Complexes: Balancing Kinetics and Thermodynamics in Constitutional Dynamic Networks

2019 ◽  
Author(s):  
Jean-François Ayme ◽  
Jean-Marie Lehn
Keyword(s):  
Metal Ions ◽  
Metal Complexes ◽  
Dynamic Networks ◽  
Tetrahedral Complex ◽  
Organic Components ◽  
Factors Influencing ◽  
Ligand Coordination ◽  
Sorting Process ◽  
Reversible Covalent ◽  
Metal Ligand

A major hurdle in the development of complex constitutional dynamic networks (CDNs) is the lack of strategies to simultaneously control the output of two (or more) interconnected dynamic processes over several species, namely reversible covalent imine bonds formation and dynamic metal-ligand coordination. We have studied in detail the factors influencing the fidelity of the self-sorting process (concentration, electronic and steric parameters of the organic components, nature of the metal cations) of 11 constitutional dynamic libraries containing two different amines, aldehydes and metals salts into two imine-based metal complexes, having no overlap in term of their compositions. In all the cases, the outcome of the process was primarily determined by the ability of the octahedral metal ions to select its pair of components from the initial pool of components, the composition of the weaker tetrahedral complex being imposed by the components rejected by the octahedral metal ions. Different octahedral metal ions required different level of precision in the “assembling instructions” provided by the organic components of the CDN to guide it towards a sorted output. The concentration of the reaction mixture, the electronic and steric properties of the initial components of the library were all found to influence the lifetime of unwanted metastable intermediates formed during the assembling of the two complexes.

Sign in / Sign up

Export Citation Format

Share Document