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New Functional Cyclic Aminomethylphosphine Ligands for the Construction of Catalysts for Electrochemical Hydrogen Transformations
Author(s) -
Musina Elvira I.,
Khrizanforova Vera V.,
Strelnik Igor D.,
Valitov Murad I.,
Spiridonova Yulia S.,
Krivolapov Dmitry B.,
Litvinov Igor A.,
Kadirov Marsil K.,
Lönnecke Peter,
HeyHawkins Evamarie,
Budnikova Yulia H.,
Karasik Andrey A.,
Sinyashin Oleg G.
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201304234
Subject(s) - electrochemistry , catalysis , cationic polymerization , chemistry , amine gas treating , formaldehyde , chelation , medicinal chemistry , aryl , hydrogen , nickel , polymer chemistry , inorganic chemistry , organic chemistry , electrode , alkyl
Eight‐membered cyclic functional bisphosphines, namely 1,5‐di‐aryl‐3,7‐di(2‐pyridyl)‐1,5‐diaza‐3,7‐diphosphacyclooctanes (aryl=2‐pyridyl, m ‐tolyl, p ‐tolyl, diphenylmethyl, benzyl, ( R )‐(+)‐(α‐methyl)benzyl), with 2‐pyridyl substituents on the phosphorus atoms have been synthesized by condensation of 2‐pyridylphosphine, formaldehyde, and the corresponding primary amine. The structures of some of these bisphosphines have been investigated by X‐ray crystallography. The bisphosphines readily form neutral P,P‐chelate complexes [(κ 2 ‐P,P‐L)MCl 2 ], cationic bis‐P,P‐chelate complexes [(κ 2 ‐P,P‐L) 2 M] 2+ , or a five‐coordinate complex [(κ 2 ‐P,P‐L) 2 NiBr]Br. The electrochemical behavior of two of the nickel complexes, and their catalytic activities in electrochemical hydrogen evolution and hydrogen oxidation, including the fuel‐cell test, have been studied.