Substitution on a methyl group of an acetylacetonate ligand: synthesis and structural characterization of oxobis[6-(phenylamino)hexane-2,4-dionato-O,O′]vanadium(IV), VO(Phad)2

1996 ◽  
pp. 2113-2114 ◽  
Author(s):  
Deirdre I. Arnold ◽  
F. Albert Cotton ◽  
John H. Matonic ◽  
Carlos A. Murillo
1999 ◽  
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pp. 2307-2308 ◽  
Author(s):  
T. Beringhelli ◽  
G. D'Alfonso ◽  
M. Panigati ◽  
F. Porta ◽  
P. Mercandelli ◽  
...  

2004 ◽  
Vol 43 (2) ◽  
pp. 473-481 ◽  
Author(s):  
Elisa Barea ◽  
Jorge A. R. Navarro ◽  
Juan M. Salas ◽  
Norberto Masciocchi ◽  
Simona Galli ◽  
...  

1996 ◽  
Vol 506 (1-2) ◽  
pp. 307-312 ◽  
Author(s):  
Pradeep Mathu ◽  
Aswini K. Dash ◽  
Md.Munki Hossain ◽  
C.V.V. Satyanarayana ◽  
Babu Verghese

2009 ◽  
Vol 362 (12) ◽  
pp. 4609-4615 ◽  
Author(s):  
Keliang Pang ◽  
Joshua S. Figueroa ◽  
Ian A. Tonks ◽  
Wesley Sattler ◽  
Gerard Parkin

2000 ◽  
Vol 56 (6) ◽  
pp. 1029-1034 ◽  
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Henning Osholm Sørensen ◽  
Nicolai Stuhr-Hansen ◽  
Lars Henriksen ◽  
Sine Larsen

The structure of the dihydroxyphenylselenonium ion (C_{6}H_{7}O_{2}Se^{+}) has been determined in its benzenesulfonate (C_{6}H_{5}O_{3}Se^{-}) and p-toluenesulfonate (C_{7}H_{7}O_{3}S ^{-}) salts. Whereas the former salt is disordered, the latter less dense salt is well defined. This difference in crystallization behaviour is attributed to a C—H...O hydrogen bond involving the methyl group of the p-toluenesulfonate ion. The two salts display very similar hydrogen-bond arrangements and differ only with respect to the stacking of the phenyl groups. The dihydroxyselenonium ion is a strong acid with a pK value of −0.9 determined from the variation of the 77Se chemical shift. A comparison with the two deprotonated species reveals a systematic increase in the Se—O bond lengths and the pyramidal configuration around Se with the number of protons attached.


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