PMID- 35985051
OWN - NLM
STAT- MEDLINE
DCOM- 20220907
LR  - 20220910
IS  - 1520-510X (Electronic)
IS  - 0020-1669 (Print)
IS  - 0020-1669 (Linking)
VI  - 61
IP  - 35
DP  - 2022 Sep 5
TI  - Pd(II) Complexes with Pyridine Ligands: Substituent Effects on the NMR Data, 
      Crystal Structures, and Catalytic Activity.
PG  - 14019-14029
LID - 10.1021/acs.inorgchem.2c01996 [doi]
AB  - A wide range of functionalized pyridine ligands have been employed to synthesize 
      a variety of Pd(II) complexes of the general formulas [PdL(4)](NO(3))(2) and 
      [PdL(2)Y(2)], where L = 4-X-py and Y = Cl(-) or NO(3)(-). Their structures have 
      been unambiguously established via analytical and spectroscopic methods in 
      solution (NMR spectroscopy and mass spectrometry) as well as in the solid state 
      (X-ray diffraction). This in-depth characterization has shown that the 
      functionalization of ligand molecules with groups of either electron-withdrawing 
      or -donating nature (EWG and EDG) results in significant changes in the 
      physicochemical properties of the desired coordination compounds. Downfield 
      shifts of signals in the (1)H NMR spectra were observed upon coordination within 
      and across the complex families, clearly indicating the relationship between NMR 
      chemical shifts and the ligand basicity as estimated from pK(a) values. A 
      detailed crystallographic study has revealed the operation of a variety of weak 
      interactions, which may be factors explaining aspects of the solution chemistry 
      of the complexes. The Pd(II) complexes have been found to be efficient and 
      versatile precatalysts in Suzuki-Miyaura and Heck cross-coupling reactions within 
      a scope of structurally distinct substrates, and factors have been identified 
      that have contributed to efficiency improvement in both processes.
FAU - Kurpik, Gracjan
AU  - Kurpik G
AD  - Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu 
      Poznanskiego 8, Poznan 61-614, Poland.
AD  - Center for Advanced Technology, Adam Mickiewicz University in Poznan, 
      Uniwersytetu Poznanskiego 10, Poznan 61-614, Poland.
FAU - Walczak, Anna
AU  - Walczak A
AD  - Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu 
      Poznanskiego 8, Poznan 61-614, Poland.
AD  - Center for Advanced Technology, Adam Mickiewicz University in Poznan, 
      Uniwersytetu Poznanskiego 10, Poznan 61-614, Poland.
FAU - Goldyn, Mateusz
AU  - Goldyn M
AUID- ORCID: 0000-0003-2282-9816
AD  - Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu 
      Poznanskiego 8, Poznan 61-614, Poland.
FAU - Harrowfield, Jack
AU  - Harrowfield J
AD  - Institut de Science et d'Ingenierie Supramoleculaires, Universite de Strasbourg, 
      8 allee Gaspard Monge, Strasbourg 67083, France.
FAU - Stefankiewicz, Artur R
AU  - Stefankiewicz AR
AUID- ORCID: 0000-0002-6177-358X
AD  - Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu 
      Poznanskiego 8, Poznan 61-614, Poland.
AD  - Center for Advanced Technology, Adam Mickiewicz University in Poznan, 
      Uniwersytetu Poznanskiego 10, Poznan 61-614, Poland.
LA  - eng
PT  - Journal Article
DEP - 20220819
PL  - United States
TA  - Inorg Chem
JT  - Inorganic chemistry
JID - 0366543
RN  - 0 (Ligands)
RN  - 0 (Pyridines)
RN  - 0 (Solutions)
SB  - IM
MH  - *Electrons
MH  - Humans
MH  - Ligands
MH  - Magnetic Resonance Spectroscopy
MH  - *Pyridines/chemistry
MH  - Solutions
PMC - PMC9455277
COIS- The authors declare no competing financial interest.
EDAT- 2022/08/20 06:00
MHDA- 2022/09/08 06:00
PMCR- 2022/09/08
CRDT- 2022/08/19 17:52
PHST- 2022/08/20 06:00 [pubmed]
PHST- 2022/09/08 06:00 [medline]
PHST- 2022/08/19 17:52 [entrez]
PHST- 2022/09/08 00:00 [pmc-release]
AID - 10.1021/acs.inorgchem.2c01996 [doi]
PST - ppublish
SO  - Inorg Chem. 2022 Sep 5;61(35):14019-14029. doi: 10.1021/acs.inorgchem.2c01996. 
      Epub 2022 Aug 19.