TY - JOUR
T1 - Synthesis, characterization, structure and catalytic activity of (NNN) tridentate azo-imine nickel(II), palladium(II) and platinum(II) complexes
AU - Mandal, Paritosh
AU - Lin, Chia Her
AU - Brandão, Paula
AU - Mal, Dasarath
AU - Felix, Vitor
AU - Pratihar, Jahar Lal
N1 - Funding Information:
Special thanks to Professor Surajit Chattopadhyay, Department of Chemistry, University of Kalyani, for his valuable suggestions throughout this work. Author acknowledged to University Grants Commission, India (under Minor Research Project, Sanction No. F.PSW/066/2011-12).
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016
Y1 - 2016
N2 - The newly designed tridentate ligand, 2,2′-(bisdiamino)azobenzene, H2L, 1 derived from the oxidative coupling of o-phenylenediamine in presence of NaOH base, upon reaction with Ni(II), Pd(II) and Pt(II) separately in methanol yielded [(HL)Ni(PPh3)]ClO4, 2, [(HL)Pd(PPh3)]ClO4, 3 and [(L)Pt(PPh3)], 4 which were characterized by spectral data and authenticated by single crystal X-ray diffraction of 1-4. The diffraction analysis revealed that the ligand binds the metals (Ni(II), Pd(II)) in monoanionic and Pt(II) in dianionic tridentate (N,N,N) fashion offering distorted square planar geometry where fourth position is occupied by one PPh3group. One ClO4-ion satisfies the charge of the former aggregate [(HL)Ni(PPh3)]+and [(HL)Pd(PPh3)]+. Suzuki and Heck coupling reactions were carried out, in presence of air and moisture, using [(HL)Pd(PPh3)]ClO4, 3 as catalysts for a variety of substrates.
AB - The newly designed tridentate ligand, 2,2′-(bisdiamino)azobenzene, H2L, 1 derived from the oxidative coupling of o-phenylenediamine in presence of NaOH base, upon reaction with Ni(II), Pd(II) and Pt(II) separately in methanol yielded [(HL)Ni(PPh3)]ClO4, 2, [(HL)Pd(PPh3)]ClO4, 3 and [(L)Pt(PPh3)], 4 which were characterized by spectral data and authenticated by single crystal X-ray diffraction of 1-4. The diffraction analysis revealed that the ligand binds the metals (Ni(II), Pd(II)) in monoanionic and Pt(II) in dianionic tridentate (N,N,N) fashion offering distorted square planar geometry where fourth position is occupied by one PPh3group. One ClO4-ion satisfies the charge of the former aggregate [(HL)Ni(PPh3)]+and [(HL)Pd(PPh3)]+. Suzuki and Heck coupling reactions were carried out, in presence of air and moisture, using [(HL)Pd(PPh3)]ClO4, 3 as catalysts for a variety of substrates.
KW - 2,2′-(bisdiamino)azobenzene
KW - Crystal structure
KW - Ni(II) and Pd(II)
KW - Pt(II)
KW - Suzuki and Heck reaction
UR - http://www.scopus.com/inward/record.url?scp=84976324448&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976324448&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2015.12.050
DO - 10.1016/j.poly.2015.12.050
M3 - Article
AN - SCOPUS:84976324448
VL - 106
SP - 171
EP - 177
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
ER -