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Insertion Reactions of Isothiocyanates into the Nb–P Bond of Phosphide–Niobocene Complexes
Author(s) -
Antiñolo Antonio,
GarcíaYuste Santiago,
Otero Antonio,
ReguilloCarmona Rebeca
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800983
Subject(s) - chemistry , phosphide , isothiocyanate , ligand (biochemistry) , medicinal chemistry , yield (engineering) , niobium , bond length , stereochemistry , crystallography , crystal structure , organic chemistry , receptor , catalysis , biochemistry , materials science , metallurgy
The reaction of the niobocene complex [Nb(η 5 ‐C 5 H 4 SiMe 3 ) 2 (PPh 2 )(L)] {L = CO ( 1 ), CNXylyl ( 2 ), and CNCy ( 3 )} with isothiocyanates RNCS (R = t Bu or Ph) yielded new derivatives [Nb(η 5 ‐C 5 H 4 SiMe 3 ) 2 {κ 1 ‐ S ‐SC(PPh 2 )(=NR)}(L)] {R = t Bu, L = CO ( 4 ), CNXylyl ( 5 ); R = Ph, L = CO ( 6 ), CNXylyl ( 7 ), CNCy ( 8 )} by the insertion of the isothiocyanate group into the niobium–phosphorus bond of the phosphide ligand. Dinuclear complexes were also obtained by the reaction of complexes 1 – 3 with phenyldiisothiocyanate {1,4‐(SCN) 2 C 6 H 4 } to yield [{Nb(η 5 ‐C 5 H 4 SiMe 3 ) 2 (L)} 2 {μ‐(κ 1 ‐ S ‐1,4‐SC{PPh 2 }{=N}) 2 (C 6 H 4 )}] {L = CO ( 9 ), CNXylyl ( 10 ), CNCy ( 11 )}.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)