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Self-assembly of copper and cobalt complexes with hierarchical size and catalytic properties for hydroxylation of phenol.

Dong H, Tao W, Bi J, Milway V, Xu Z, Zhang S, Meng X, Bi W, Li J, Li M - Nanoscale Res Lett (2011)

Bottom Line: A feasible and effective self-assembly method to synthesize different scale coordination polymers in highly dilute solution (from nanocrystals to microcrystals and to bulk crystals) without any blocking agent has been described.The growth of crystalline particles was controlled by removing the particles at different reaction times to interrupt the growth at the desired size.The nano and microscale particles show better catalytic conversions and selectivities in the hydroxylation of phenols than the bulk crystals.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, People's Republic of China. dapdong@yahoo.com.cn.

ABSTRACT
A feasible and effective self-assembly method to synthesize different scale coordination polymers in highly dilute solution (from nanocrystals to microcrystals and to bulk crystals) without any blocking agent has been described. The growth of crystalline particles was controlled by removing the particles at different reaction times to interrupt the growth at the desired size. The nano and microscale particles show better catalytic conversions and selectivities in the hydroxylation of phenols than the bulk crystals.

No MeSH data available.


Related in: MedlinePlus

Mononuclear unit for complex 1 and hydrogen-bonded framework. (Left) ORTEP view with atom labeling of the mononuclear unit for complex 1 (displacement ellipsoids drawn at 30% probability, H atoms and one lattice water molecule are omitted for clarity,). (Right) Schematic representation of hydrogen-bonded framework of the CPs viewed along a axis.
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Figure 3: Mononuclear unit for complex 1 and hydrogen-bonded framework. (Left) ORTEP view with atom labeling of the mononuclear unit for complex 1 (displacement ellipsoids drawn at 30% probability, H atoms and one lattice water molecule are omitted for clarity,). (Right) Schematic representation of hydrogen-bonded framework of the CPs viewed along a axis.

Mentions: The crystal structure of MCPs-1 with the CCDC number 667029 demonstrates that the copper complex has a mononuclear motif, where each Cu (II) ion is bound by two O atoms from one oxalate anion, one water molecule and two N atoms from one 1,10-phenanthroline, in a slightly distorted square pyramidal coordination geometry (Figure 3, and Additional file 1). It is worth noting that hydrogen bonds and pi-pi stacking interactions play key roles in the fast formation of the hierarchical MCPs-1.


Self-assembly of copper and cobalt complexes with hierarchical size and catalytic properties for hydroxylation of phenol.

Dong H, Tao W, Bi J, Milway V, Xu Z, Zhang S, Meng X, Bi W, Li J, Li M - Nanoscale Res Lett (2011)

Mononuclear unit for complex 1 and hydrogen-bonded framework. (Left) ORTEP view with atom labeling of the mononuclear unit for complex 1 (displacement ellipsoids drawn at 30% probability, H atoms and one lattice water molecule are omitted for clarity,). (Right) Schematic representation of hydrogen-bonded framework of the CPs viewed along a axis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211998&req=5

Figure 3: Mononuclear unit for complex 1 and hydrogen-bonded framework. (Left) ORTEP view with atom labeling of the mononuclear unit for complex 1 (displacement ellipsoids drawn at 30% probability, H atoms and one lattice water molecule are omitted for clarity,). (Right) Schematic representation of hydrogen-bonded framework of the CPs viewed along a axis.
Mentions: The crystal structure of MCPs-1 with the CCDC number 667029 demonstrates that the copper complex has a mononuclear motif, where each Cu (II) ion is bound by two O atoms from one oxalate anion, one water molecule and two N atoms from one 1,10-phenanthroline, in a slightly distorted square pyramidal coordination geometry (Figure 3, and Additional file 1). It is worth noting that hydrogen bonds and pi-pi stacking interactions play key roles in the fast formation of the hierarchical MCPs-1.

Bottom Line: A feasible and effective self-assembly method to synthesize different scale coordination polymers in highly dilute solution (from nanocrystals to microcrystals and to bulk crystals) without any blocking agent has been described.The growth of crystalline particles was controlled by removing the particles at different reaction times to interrupt the growth at the desired size.The nano and microscale particles show better catalytic conversions and selectivities in the hydroxylation of phenols than the bulk crystals.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, People's Republic of China. dapdong@yahoo.com.cn.

ABSTRACT
A feasible and effective self-assembly method to synthesize different scale coordination polymers in highly dilute solution (from nanocrystals to microcrystals and to bulk crystals) without any blocking agent has been described. The growth of crystalline particles was controlled by removing the particles at different reaction times to interrupt the growth at the desired size. The nano and microscale particles show better catalytic conversions and selectivities in the hydroxylation of phenols than the bulk crystals.

No MeSH data available.


Related in: MedlinePlus