Ligand- and metal-exchange reactions on substituted lacunary heteropolytungstates

1983 ◽  
Vol 22 (8) ◽  
pp. 1198-1202 ◽  
Author(s):  
Frans Zonnevijlle ◽  
Claude M. Tourne ◽  
Gilbert F. Tourne
Keyword(s):  
Metal Exchange ◽  
Exchange Reactions

Understanding and Practical Use of Ligand and Metal Exchange Reactions in Thiolate-Protected Metal Clusters to Synthesize Controlled Metal Clusters

2017 ◽  
Vol 17 (5) ◽  
pp. 473-484 ◽  
Author(s):  
Yoshiki Niihori ◽  
Sakiat Hossain ◽  
Sachil Sharma ◽  
Bharat Kumar ◽  
Wataru Kurashige ◽  
...  
Keyword(s):  
Metal Clusters ◽  
Metal Exchange ◽  
Exchange Reactions

Applications of Cd N.M.R to Polycadmium Complexes. III. Effects of Zn/Cd and of Se/S Substitution in the Tetra-Adamantanoid Cage [S4Cd10(Sph)16]4- in Relation to Heterometal Metallothioneins

1985 ◽  
Vol 38 (12) ◽  
pp. 1745 ◽  
Author(s):  
IG Dance
Keyword(s):  
Chemical Shift ◽  
Metal Exchange ◽  
High Symmetry ◽  
Structural Elements ◽  
Structural Components ◽  
Exchange Reactions ◽  
Cage Compounds ◽  
Zn Substitution ◽  
Metal Atoms ◽  
Se Substitution

Cadmium-113 n.m.r . spectra at 66.6 MHz of various mixtures of the six cage compounds [X4M10( SPh )16]4- (1; X = S, Se; M = Zn, Cd ) and [M4( SPh )10]2- (M = Zn, Cd ), have revealed the exchange reactions of M and of X which occur within the different structural elements of (1), namely the triply bridging chalcogenide ligands X, the inner metal atoms Mi, and the outer metal atoms Mo. At laboratory temperature the exchange time scales range from days (X) through hours (Mi) to seconds (Mo and SPh ), according to the extent of atomic connection to each of these structural components of the aggregate. Metal exchange does not always follow random statistics, with biases towards equilibrium association of the same metal. The M- and X-substituted products, with lower symmetry than the high-symmetry precursors, reveal the mutual influences of the various structural elements on Cd chemical shift: S → Se substitution causes changes ( ΔδCd ) of -37 ppm at one bond, -3 ppm and -1.5 ppm at three bonds, and + 1 ppm five bonds distant; Cd → Zn substitution causes δCd to change by + 13 ppm and + 5 ppm at a connection of two bonds and by -3 ppm over four bonds. These effects of adjacent Cd → Zn substitution on δCd provide well defined models in support of the hypothesis of similar effects in the Cd n.m.r . spectra of mixed Zn, Cd metallothionein proteins.

Metal exchange reactions between uranyl-18-crown-6 complex and sodium ion in propylene carbonate

1988 ◽  
Vol 27 (1) ◽  
pp. 206-208 ◽  
Author(s):  
Pierre Fux ◽  
Janine Lagrange ◽  
Philippe Lagrange
Keyword(s):  
Propylene Carbonate ◽  
Sodium Ion ◽  
Metal Exchange ◽  
Exchange Reactions

Some peculiarities of metal exchange reactions in porphyrin and phthalocyanine complexes

2005 ◽  
Vol 31 (2) ◽  
pp. 95-100 ◽  
Author(s):  
D. B. Berezin ◽  
O. V. Shukhto ◽  
M. S. Nikol?skaya ◽  
B. D. Berezin
Keyword(s):  
Metal Exchange ◽  
Exchange Reactions

HPLC Characterization of Ag+and Cu+Metal Exchange Reactions with Zn- and Cd-Metallothioneins†

Biochemistry ◽  
1996 ◽  
Vol 35 (44) ◽  
pp. 13937-13945 ◽  
Author(s):  
Hong Li ◽  
James D. Otvos
Keyword(s):  
Metal Exchange ◽  
Exchange Reactions

ChemInform Abstract: The Role of Ate Complexes in Halogen(Metalloid)-Metal Exchange Reactions: A Theoretical Study.

ChemInform ◽  
2010 ◽  
Vol 29 (50) ◽  
pp. no-no
Author(s):  
G. BOCHE ◽  
M. SCHIMECZEK ◽  
J. CIOSLOWSKI ◽  
P. PISKORZ
Keyword(s):  
Theoretical Study ◽  
Metal Exchange ◽  
Exchange Reactions

Metal exchange reactions under the influence of a cyclophosphazene template: iron, cobalt, and rhodium metallophosphazenes

1985 ◽  
Vol 4 (3) ◽  
pp. 446-457 ◽  
Author(s):  
Harry R. Allcock ◽  
Paul R. Suszko ◽  
Linda J. Wagner ◽  
Robert R. Whittle ◽  
Brian. Boso
Keyword(s):  
Metal Exchange ◽  
Exchange Reactions ◽  
Iron Cobalt
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