Abstract
The synthesis, characterization, and catalytic activity of bis(2-pyridylmethyl)amine (BPMA) copper complexes incorporating olefinic pendent arms are reported. Four copper(I) and four copper(II) complexes were synthesized employing four different counterions [chloride (Cl-), perchlorate (ClO4-), trifluoromethanesulfonate (CF3SO3-), and tetraphenylborate (BPh4-)]. The counterions used ranged from coordinating (Cl-) to non-coordinating (BPh4-), producing different coordination modes in respective complexes. Solid state results obtained for the copper(I) complex incorporating the non-coordinating (BPh4-) counterion displayed an associative bond between the metal center and the C=C group in the olefinic arm of a neighboring complex. This interaction led to augmentation of the C=C bond due to back-bonding from the metal center. Five solid state structures were obtained for the copper(II) complexes with two also displaying intermolecular associative bonding between olefinic pendent arms and the metal center. X-ray crystallography studies showed that the olefinic arm motifs incorporated were hemilabile. Solution studies indicated that the copper complexes had some inherent reducing power and could be potential candidates for use as catalysts in atom transfer radical processes. However, only moderate conversions and yields were obtained in atom transfer radical addition (ATRA) reaction studies performed utilizing the copper complexes due to the presence of a competing reaction.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 256-267 |
| Number of pages | 12 |
| Journal | Polyhedron |
| Volume | 114 |
| DOIs | |
| State | Published - Aug 16 2016 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
Cite this
Synthesis, characterization, X-ray crystallography analysis, and catalytic activity of bis(2-pyridylmethyl)amine copper complexes containing coupled pendent olefinic arms in atom transfer radical addition (ATRA) reactions. / Bussey, Katherine A.; Cavalier, Annie R.; Mraz, Margaret E.; Oshin, Kayode; Sarjeant, Amy; Pintauer, Tomislav.
In: Polyhedron, Vol. 114, 16.08.2016, p. 256-267.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis, characterization, X-ray crystallography analysis, and catalytic activity of bis(2-pyridylmethyl)amine copper complexes containing coupled pendent olefinic arms in atom transfer radical addition (ATRA) reactions
AU - Bussey, Katherine A.
AU - Cavalier, Annie R.
AU - Mraz, Margaret E.
AU - Oshin, Kayode
AU - Sarjeant, Amy
AU - Pintauer, Tomislav
PY - 2016/8/16
Y1 - 2016/8/16
N2 - The synthesis, characterization, and catalytic activity of bis(2-pyridylmethyl)amine (BPMA) copper complexes incorporating olefinic pendent arms are reported. Four copper(I) and four copper(II) complexes were synthesized employing four different counterions [chloride (Cl-), perchlorate (ClO4-), trifluoromethanesulfonate (CF3SO3-), and tetraphenylborate (BPh4-)]. The counterions used ranged from coordinating (Cl-) to non-coordinating (BPh4-), producing different coordination modes in respective complexes. Solid state results obtained for the copper(I) complex incorporating the non-coordinating (BPh4-) counterion displayed an associative bond between the metal center and the C=C group in the olefinic arm of a neighboring complex. This interaction led to augmentation of the C=C bond due to back-bonding from the metal center. Five solid state structures were obtained for the copper(II) complexes with two also displaying intermolecular associative bonding between olefinic pendent arms and the metal center. X-ray crystallography studies showed that the olefinic arm motifs incorporated were hemilabile. Solution studies indicated that the copper complexes had some inherent reducing power and could be potential candidates for use as catalysts in atom transfer radical processes. However, only moderate conversions and yields were obtained in atom transfer radical addition (ATRA) reaction studies performed utilizing the copper complexes due to the presence of a competing reaction.
AB - The synthesis, characterization, and catalytic activity of bis(2-pyridylmethyl)amine (BPMA) copper complexes incorporating olefinic pendent arms are reported. Four copper(I) and four copper(II) complexes were synthesized employing four different counterions [chloride (Cl-), perchlorate (ClO4-), trifluoromethanesulfonate (CF3SO3-), and tetraphenylborate (BPh4-)]. The counterions used ranged from coordinating (Cl-) to non-coordinating (BPh4-), producing different coordination modes in respective complexes. Solid state results obtained for the copper(I) complex incorporating the non-coordinating (BPh4-) counterion displayed an associative bond between the metal center and the C=C group in the olefinic arm of a neighboring complex. This interaction led to augmentation of the C=C bond due to back-bonding from the metal center. Five solid state structures were obtained for the copper(II) complexes with two also displaying intermolecular associative bonding between olefinic pendent arms and the metal center. X-ray crystallography studies showed that the olefinic arm motifs incorporated were hemilabile. Solution studies indicated that the copper complexes had some inherent reducing power and could be potential candidates for use as catalysts in atom transfer radical processes. However, only moderate conversions and yields were obtained in atom transfer radical addition (ATRA) reaction studies performed utilizing the copper complexes due to the presence of a competing reaction.
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U2 - 10.1016/j.poly.2015.12.043
DO - 10.1016/j.poly.2015.12.043
M3 - Article
VL - 114
SP - 256
EP - 267
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
ER -