Complexes of Vanadium(V) Oxide Trifluoride with Nitrogen and Oxygen Donor Ligands: Coordination Chemistry and Some Fluorination Reactions

2008 ◽  
Vol 2008 (5) ◽  
pp. 802-811 ◽  
Author(s):  
Martin F. Davis ◽  
William Levason ◽  
James Paterson ◽  
Gillian Reid ◽  
Michael Webster
2020 ◽  
Vol 75 (5) ◽  
pp. 473-482
Author(s):  
Onyekachi Raymond ◽  
William Henderson ◽  
Penelope J. Brothers ◽  
Paul G. Plieger

AbstractThe electrospray ionisation mass spectrometric (ESI-MS) behaviour of various complexes of beryllium have been investigated in the work described in this paper. These beryllium complexes were analysed in situ on a small scale by preparing appropriate molar mixtures of the Be2+ ion with ligands in a range of solvent systems. In view of the toxicity of beryllium compounds, this combinatorial type screening, involving miniscule amounts of material in solution, proved to be a safe strategy to pursue the coordination chemistry of beryllium. A variety of beryllium complexes were generated with various ligands in solutions and subjected to detailed characterisation by ESI-MS. These ligands, containing functional groups or architecture of interest, varied from simple ligands such as the acetate ion to more common beryllium chelators including hydroxy keto ligands (maltol, tropolone), malonic acid, chromotropic acid and citric acid. Generally, there was excellent correlation between the species observed in the mass spectrum and those confirmed to exist in solution by other techniques. This lent strong credence to the ESI-MS methodology used as an efficient analytical technique for the easy screening of a diverse range of potential ligands for the divalent beryllium ion.


Polyhedron ◽  
1992 ◽  
Vol 11 (11) ◽  
pp. 1331-1336 ◽  
Author(s):  
Souad Boulmaaz ◽  
Renée Papiernik ◽  
Liliane G. Hubert-Pfalzgraf ◽  
Jacqueline Vaissermann ◽  
Jean-Claude Daran

1999 ◽  
Vol 38 (18) ◽  
pp. 4098-4103 ◽  
Author(s):  
Tadashi J. Mizoguchi ◽  
Roman M. Davydov ◽  
Stephen J. Lippard
Keyword(s):  

1995 ◽  
Vol 34 (1) ◽  
pp. 5-6 ◽  
Author(s):  
William J. Evans ◽  
Reiner Anwander ◽  
Mohammad A. Ansari ◽  
Joseph W. Ziller
Keyword(s):  

2014 ◽  
Vol 67 (11) ◽  
pp. 1542 ◽  
Author(s):  
Michele Vonci ◽  
Colette Boskovic

Polyoxometalates are robust and versatile multidentate oxygen-donor ligands, eminently suitable for coordination to trivalent lanthanoid ions. To date, 10 very different structural families of such complexes have been found to exhibit slow magnetic relaxation due to single-molecule magnet (SMM) behaviour associated with the lanthanoid ions. These families encompass complexes with between one and four of the later lanthanoid ions: Tb, Dy, Ho, Er, and Yb. The lanthanoid coordination numbers vary between six and eleven and a range of coordination geometries are evident. The highest energy barrier to magnetisation reversal measured to date for a lanthanoid–polyoxometalate SMM is Ueff/kB = 73 K for the heterodinuclear Dy–Eu compound (Bu4N)8H4[DyEu(OH)2(γ-SiW10O36)2].


1980 ◽  
Vol 5 (1) ◽  
pp. 237-239 ◽  
Author(s):  
Ram K. Agarwal ◽  
Prakash C. Jain ◽  
Miss Veena Kapur ◽  
Miss Sunita Sharma ◽  
Anant K. Srivastava
Keyword(s):  

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