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Use of the 2-Pyridinealdoxime/N,N'-Donor Ligand Combination in Cobalt(III) Chemistry: Synthesis and Characterization of Two Cationic Mononuclear Cobalt(III) Complexes.

Konidaris KF, Raptopoulou CP, Psycharis V, Perlepes SP, Manessi-Zoupa E, Stamatatos TC - Bioinorg Chem Appl (2010)

Bottom Line: The use of 2-pyridinealdoxime (paoH)/N,N'-donor ligand (L-L) "blend" in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao)(2)(L-L)](+), where L-L = 1,10-phenanthroline (phen) and 2,2'-bipyridine (bpy).The CoCl(2)/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes [Co(III)(pao)(2)(phen)]Cl.2H(2)O (1.2H(2)O) and [Co(III)(pao)(2)(bpy)]Cl.1.5MeOH (2.1.5MeOH).IR data of the complexes are discussed in terms of the nature of bonding and the known structures.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, University of Patras, 26500 Patras, Greece.

ABSTRACT
The use of 2-pyridinealdoxime (paoH)/N,N'-donor ligand (L-L) "blend" in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao)(2)(L-L)](+), where L-L = 1,10-phenanthroline (phen) and 2,2'-bipyridine (bpy). The CoCl(2)/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes [Co(III)(pao)(2)(phen)]Cl.2H(2)O (1.2H(2)O) and [Co(III)(pao)(2)(bpy)]Cl.1.5MeOH (2.1.5MeOH). The structures of the complexes were determined by single-crystal X-ray crystallography. The Co(III) ions are six-coordinate, surrounded by three bidentate chelating ligands, that is, two pao(-) and one phen or bpy. The deprotonated oxygen atom of the pao(-) ligand remains uncoordinated and participates in hydrogen bonding with the solvate molecules. IR data of the complexes are discussed in terms of the nature of bonding and the known structures.

No MeSH data available.


Related in: MedlinePlus

A part of the 1D structure of 1·2H2O due to H-bonding interactions (dashed lines) along the a axis. Chlorides (green) are emphasized using space filling models.
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fig3: A part of the 1D structure of 1·2H2O due to H-bonding interactions (dashed lines) along the a axis. Chlorides (green) are emphasized using space filling models.

Mentions: In the crystal lattice of 1·2H2O, the molecules interact through hydrogen bonds forming 1D zig-zag chains (Figure 3). These include the water lattice molecules, the oximate oxygen atom, and the Cl− counteranion; their dimensions are presented in Table 3.


Use of the 2-Pyridinealdoxime/N,N'-Donor Ligand Combination in Cobalt(III) Chemistry: Synthesis and Characterization of Two Cationic Mononuclear Cobalt(III) Complexes.

Konidaris KF, Raptopoulou CP, Psycharis V, Perlepes SP, Manessi-Zoupa E, Stamatatos TC - Bioinorg Chem Appl (2010)

A part of the 1D structure of 1·2H2O due to H-bonding interactions (dashed lines) along the a axis. Chlorides (green) are emphasized using space filling models.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2913532&req=5

fig3: A part of the 1D structure of 1·2H2O due to H-bonding interactions (dashed lines) along the a axis. Chlorides (green) are emphasized using space filling models.
Mentions: In the crystal lattice of 1·2H2O, the molecules interact through hydrogen bonds forming 1D zig-zag chains (Figure 3). These include the water lattice molecules, the oximate oxygen atom, and the Cl− counteranion; their dimensions are presented in Table 3.

Bottom Line: The use of 2-pyridinealdoxime (paoH)/N,N'-donor ligand (L-L) "blend" in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao)(2)(L-L)](+), where L-L = 1,10-phenanthroline (phen) and 2,2'-bipyridine (bpy).The CoCl(2)/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes [Co(III)(pao)(2)(phen)]Cl.2H(2)O (1.2H(2)O) and [Co(III)(pao)(2)(bpy)]Cl.1.5MeOH (2.1.5MeOH).IR data of the complexes are discussed in terms of the nature of bonding and the known structures.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, University of Patras, 26500 Patras, Greece.

ABSTRACT
The use of 2-pyridinealdoxime (paoH)/N,N'-donor ligand (L-L) "blend" in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao)(2)(L-L)](+), where L-L = 1,10-phenanthroline (phen) and 2,2'-bipyridine (bpy). The CoCl(2)/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes [Co(III)(pao)(2)(phen)]Cl.2H(2)O (1.2H(2)O) and [Co(III)(pao)(2)(bpy)]Cl.1.5MeOH (2.1.5MeOH). The structures of the complexes were determined by single-crystal X-ray crystallography. The Co(III) ions are six-coordinate, surrounded by three bidentate chelating ligands, that is, two pao(-) and one phen or bpy. The deprotonated oxygen atom of the pao(-) ligand remains uncoordinated and participates in hydrogen bonding with the solvate molecules. IR data of the complexes are discussed in terms of the nature of bonding and the known structures.

No MeSH data available.


Related in: MedlinePlus