scholarly journals The 1:1 proton-transfer compound of 8-quinolinol (oxine) with pyrazine-2,3-dicarboxylic acid: 8-hydroxyquinolinium 3-carboxypyrazine-2-carboxylate dihydrate

2006 ◽  
Vol 62 (11) ◽  
pp. o5089-o5091 ◽  
Author(s):  
Graham Smith ◽  
Urs D. Wermuth ◽  
Peter C. Healy ◽  
Jonathan M. White
Keyword(s):  
Proton Transfer ◽  
Dicarboxylic Acid ◽  
Proton Transfer Compound

Different complexation behavior of a proton transfer compound obtained from 1,10-phenanthroline and pyridine-2,6-dicarboxylic acid with Sn(IV), Sb(III) and Tl(I)

2007 ◽  
Vol 42 (11) ◽  
pp. 1137-1144 ◽  
Author(s):  
H. Aghabozorg ◽  
F. Ramezanipour ◽  
B. Nakhjavan ◽  
J. Soleimannejad ◽  
J. Attar Gharamaleki ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Dicarboxylic Acid ◽  
Proton Transfer Compound

Ion pairing, H-bonding, and π–π interactions in copper(II) complex-organo-networks derived from a proton-transfer compound of the 1,10-phenanthroline-2,9-dicarboxylic acid

2005 ◽  
Vol 750 (1-3) ◽  
pp. 166-173 ◽  
Author(s):  
Abolghasem Moghimi ◽  
Robabeh Alizadeh ◽  
Hossein Aghabozorg ◽  
Abbas Shockravi ◽  
M. Carla Aragoni ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Dicarboxylic Acid ◽  
Ion Pairing ◽  
Π Interactions ◽  
Proton Transfer Compound

Structures of CoIIand ZnIIcomplexes of the proton-transfer compound derived from pyrazine-2,3-dicarboxylic acid and piperazine

2015 ◽  
Vol 71 (7) ◽  
pp. 539-544 ◽  
Author(s):  
Mohammad Ghadermazi ◽  
Jafar Attar Gharamaleki ◽  
Marilyn M. Olmstead ◽  
Mehdi Almasi
Keyword(s):  
Coordination Polymer ◽  
Proton Transfer ◽  
Dicarboxylic Acid ◽  
Metal Atom ◽  
Stacking Interactions ◽  
Carboxylate Group ◽  
One Dimensional ◽  
Proton Transfer Compound ◽  
Compound Ii ◽  
Base Compound

The reaction of the proton-transfer compound piperazine-1,4-diium pyrazine-2,3-dicarboxylate 4.5-hydrate, C4H12N22+·C6H2N2O42−·4.5H2O or (pipzH2)(pyzdc)·4.5H2O (pyzdcH2is pyrazine-2,3-dicarboxylic acid and pipz is piperazine), (I), with Zn(NO3)2·6H2O and CoCl2·6H2O results in the formation of bis(piperazine-1,4-diium) bis(μ-pyrazine-2,3-dicarboxylato)-κ3N1,O2:O3;κ3O3:N1,O2-bis[aqua(pyrazine-2,3-dicarboxylato-κ2N1,O2)zinc(II)] decahydrate, (C4H12N2)2[Zn2(C6H2N2O4)4(H2O)2]·10H2O or (pipzH2)2[Zn(pyzdc)2(H2O)]2·10H2O, (II), andcatena-poly[piperazine-1,4-diium [cobalt(II)-bis(μ-pyrazine-2,3-dicarboxylato)-κ3N1,O2:O3;κ3O3:N1,O2] hexahydrate], {(C4H12N2)[Co(C6H2N2O4)2]·6H2O}nor {(pipzH2)[Co(pyzdc)2]·6H2O}n, (III), respectively. In (I), pyzdcH2is doubly deprotonated on reaction with piperazine as a base. Compound (II) crystallizes as a dimer, whereas compound (III) exists as a one-dimensional coordination polymer. In (II), two pyzdc2−groups chelate to each of the two ZnIIatoms through a ring N atom and an O atom of the 2-carboxylate group. In one ligand, the adjacent 3-carboxylate group bridges to a neighbouring metal atom. A water molecule ligates in the sixth coordination site. The structure of (II) can be described as a commensurate superlattice due to an ordering in the hydrogen-bonded network. In (III), no water is coordinated to the metal atom and the coordination sphere is comprised of twoN,O-chelates plus two bridging O atoms. A large number of hydrogen bonds are observed in all three compounds. These interactions, as well as π–π and C=O...π stacking interactions, play important structural roles.

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