Plutonium chlorido nitrato complexes: ligand competition and computational metrics for assembly and bonding

2018 ◽  
Vol 54 (85) ◽  
pp. 12014-12017 ◽  
Author(s):  
Robert G. Surbella ◽  
Lucas C. Ducati ◽  
Jochen Autschbach ◽  
Kristi L. Pellegrini ◽  
Bruce K. McNamara ◽  
...  
Keyword(s):  
Chloro Complexes ◽  
Nitrato Complexes ◽  
Ligand Bond

Four novel Pu(iv) nitrato chloro complexes were crystallographically characterized and the Pu–ligand bond nature was delineated computationally.

Cobalt(II) and Cobalt(III) Complexes of Pentaaza Macrocyclic Ligands. Isomeric Composition and Hydrolysis Reactions of the Complexes of Eight Ligands With 15-Membered to 20-Membered Macrocyclic Rings

1987 ◽  
Vol 40 (5) ◽  
pp. 811 ◽  
Author(s):  
NF Curtis ◽  
P Osvath ◽  
DC Weatherburn
Keyword(s):  
Geometric Isomer ◽  
Macrocyclic Ligands ◽  
Synthesis And Characterization ◽  
Isomeric Composition ◽  
Acid Media ◽  
Chloro Complexes ◽  
Nitrato Complexes ◽  
Reaction Proceeds ◽  
Hydrolysis Reactions

Synthesis and characterization of cobalt(III) complexes of the pentaaza macrocyclic ligands 1,4,7,10, 13-pentaazacyclopentadecane, ( cpad ), 1,4,7,10,13-pentaazacyclohexadecane, ( ched ), 1,4,7,10,14-pentaazacycloheptadecane, ( chad ), 1,4,7,11,14-pentaazacycloheptadecane, ( chbd ), 1,4,7,11, 15-pentaazacyclooctadecane, ( coad ), 1,4,8,11,15-pentaazacyclooctadecane, ( cobd ) are described. Of the different isomeric forms possible for each complex only one geometric isomer and one or two of the possible diastereoisomers have been isolated. The products of the induced acid hydrolysis reactions of the bromo and chloro complexes with these ligands have been identified by means of 13C n.m.r. spectroscopy. Nitrato complexes are commonly produced when the reaction proceeds in nitrate media. The reactions of the [Co( cpad )X]n+ and [Co( chbd )X]n+ complexes proceed with the apparent inversion of a coordinated nitrogen in strongly acid media. Cobalt(II) complexes of the ligands 1,4,8,12,16-pentaazacyclononadecane ( cnad ) and 1,5,9,13,17-pentaazacycloeicosane (ceic) were prepared. These complexes could not be oxidized to cobalt(III) complexes and the available evidence suggests that they are five-coordinate square-pyramidal complexes in the solid state and in solution.

Selectivity coefficients of some simple and complex inorganic ions for Spheron DEAE

1984 ◽  
Vol 49 (10) ◽  
pp. 2349-2354 ◽  
Author(s):  
František Vláčil ◽  
Karel Koňák
Keyword(s):  
Ion Exchange ◽  
Mobile Phase ◽  
Dynamic Method ◽  
Precious Metals ◽  
Inorganic Ions ◽  
Chromatographic Determination ◽  
Chloride Ions ◽  
Chloro Complexes ◽  
Selectivity Coefficients

The selectivity coefficients of the nitrate and chloride ions and of anionic chloro complexes of Au(III), Rh(III), Pd(II), and Pt(IV) for ion exchange on Spheron DEAE in the chloride form are determined by the dynamic method. the complex anion species formed are identified and the ion exchange nature of the sorption of precious metals on this sorbent is confirmed based on the elution order of the precious metals as determined previously by the column chromatography on Spheron DEAE using hydrochloric acid as the mobile phase. The effect of the presence of perchlorate in the mobile phase during the liquid chromatography of precious metals and during the chromatographic determination of nitrate traces is explained.

Density Functional Theory Study of Uranium(VI) Aquo Chloro Complexes in Aqueous Solution

2008 ◽  
Vol 112 (11) ◽  
pp. 2428-2436 ◽  
Author(s):  
Michael Bühl ◽  
Nicolas Sieffert ◽  
Volodymyr Golubnychiy ◽  
Georges Wipff
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Chloro Complexes

Chlorine nuclear quadrupole resonance in some chloro complexes of divalent copper

1971 ◽  
Vol 24 (10) ◽  
pp. 1993 ◽  
Author(s):  
DE Scaife
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Covalent Bonding ◽  
Divalent Copper ◽  
Chloro Complexes ◽  
35Cl Nucleus ◽  
Square Planar ◽  
Bonding Interaction ◽  
Quadrupole Resonance ◽  
Square Planar Complexes ◽  
Nuclear Quadrupole

Nuclear quadrupole resonance for the 35Cl nucleus has been observed in some chloro complexes of divalent copper. Square-planar complexes each show two resonance lines, with the following frequencies (at 77�K): (CH3NH3)2CuCl4, 10.780, 12.157 MHz; (C2H5NH3)2CuCl4, 10.817, 12.074 MHz; (enH2)CuCl4, 10.271, 11.901 MHz; and (C3H7NH3)2CuCl4 at 223�K, 11.290 and 11.781 MHz. NH4CuCl3, containing dimeric Cu2Cl62- units, has resonances, at 77�K, at 11.907, 11.993, and 12.448 MHz. The trigonal pyramidal anion in Co(NH3)6CuCl5 has two resonances at 9.642 and 10.352 MHz at 77�K. ��� These results are compared with previous results for copper chloro complexes, and the implications of covalent bonding are discussed. In particular, it is suggested that the long-bond interaction between units in square-planar complexes amounts to 7-16% of the bonding interaction within the units.

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