## Electrospray ionization (ESI) mass spectra of ternary complexes of Cu 2Y and 1,10-phenanthroline with the 20 essential amino acids (AA) were investigated quantitatively. Non-basic amino acids formed singly charged complexes of the [Cu(AA -H)phen] Y type. Lysine (Lys) and arginine (Arg) formed do
Electrospray mass spectrometry study of selective complexes of polyammonium macrotricyclic ligands with dicarboxylic acids
โ Scribed by C. Collette; C. Meunier; E. De Pauw; A. Dumont; J. F. Desreux
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 137 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-4198
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โฆ Synopsis
Table 1. Molecular masses and pK 1 , pK 2 values of the dicarboxylic acids HCO 2 -(CH 2 ) n -CO 2 H used n name mass pK 1 pK 2 0 oxalic 90 1.2 4.2 1 malonic 104 2.8 5.7 2 succinic 118 4.2 5.5 4 adipic 146 4.42 5.41 5 a maleic 116 1.9 6.2 6 a fumaric 116 3.1 7.8 a unsaturated diacids.
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New organotin(IV) derivatives containing the anionic ligands bis(3,5-dimethylpyrazol-1yl)dithioacetate [LCS 2 ] -and bis(3,5-dimethylpyrazol-1-yl)acetate [LCO 2 ] -have been synthesized from reaction between (CH 3 ) 2 SnCl 2 and lithium salts of the ligands. Mononuclear complexes of the type {[LCX 2
## Abstract A Schiff base of gossypol with 3,6,9,12,15,18,21,24โoctaoxaโpentacosylamine (GSOB) forms stable complexes with monovalent cations. This process of complex formation was studied by electrospray ionizationโmass spectrometry, ^1^HโNMR and Fourier transform infrared spectroscopy as well as