Flexible Coordination of Diphosphine Ligands Leading to cis and trans Pd(0), Pd(II), and Rh(I) Complexes | Zendy

Cezar C. Comanescu | Zendy; Vlad M. Iluc | Zendy

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Flexible Coordination of Diphosphine Ligands Leading to cis and trans Pd(0), Pd(II), and Rh(I) Complexes

Author(s) -

Cezar C. Comanescu,

Vlad M. Iluc

Publication year - 2014

Publication title -

inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 233

eISSN - 1520-510X

pISSN - 0020-1669

DOI - 10.1021/ic5010566

Subject(s) - chemistry , palladium , coordination complex , stereochemistry , medicinal chemistry , catalysis , metal , organic chemistry

A series of diphosphine ligands (i)Pr2P-C6H4-X-C6H4-P(i)Pr2 (for ligand L(1), X = CH2; for ligand L(2), X = CH2CH2) was investigated to determine the preference for cis/trans coordination to palladium(0), palladium(II), and rhodium(I). Increasing the length of the bridging alkyl backbone from one to two carbons changes the geometry of the resulting palladium(II) complexes, with L(1) coordinating preferentially cis, while L(2) coordinates in a trans fashion. Coordination to Pd(0) leads to L(1)Pd(dba) and L(2)Pd(dba), in which both ligands accommodate a P-M-P angle close to 120°. L(2) was found to coordinate cis in a rhodium(I) complex ([L(2)Rh(nbd)][BF4], where nbd = norbornadiene).

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