http://www.cnr.it/ontology/cnr/individuo/prodotto/ID216623
Bent metallocenes containing ancillary ligands in ring-bridging chains. Synthesis, spectroscopy, and X-ray crystal structure of [2,6-pyridinediylbis(methylcyclopentadienyl)]chromium(II) (Articolo in rivista)
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- Bent metallocenes containing ancillary ligands in ring-bridging chains. Synthesis, spectroscopy, and X-ray crystal structure of [2,6-pyridinediylbis(methylcyclopentadienyl)]chromium(II) (Articolo in rivista) (literal)
- Anno
- 1994-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/om00017a034 (literal)
- Alternative label
Paolucci G.; Ossola F.; Bettinelli M.; Sessoli R.; Benetollo F.; Bombieri G. (1994)
Bent metallocenes containing ancillary ligands in ring-bridging chains. Synthesis, spectroscopy, and X-ray crystal structure of [2,6-pyridinediylbis(methylcyclopentadienyl)]chromium(II)
in Organometallics
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Paolucci G.; Ossola F.; Bettinelli M.; Sessoli R.; Benetollo F.; Bombieri G. (literal)
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- http://pubs.acs.org/doi/abs/10.1021/om00017a034 (literal)
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- 1 : Dipartimento di Chimica, Università di Venezia, Calla Larga S. Marta 2137, I-30123 Venezia, Italy /
2,5 : Istituto di Chimica e Tecnologie Inorganiche e dei Materiali Avanzati, Area Della Ricerca CNR, Corso Stati Uniti 4, I-35020 Padova, Italy /
3 : Dipartimento di Fisica, Università di Salerno, I-84081 Baronissi (SA), Italy /
4 : Dipartimento di Chimica, Università di Firenze, Via Maragliano 7, I-50144 Firenze, Italy /
5 : Istituto di Chimica Farmaceutica e Tossicologica, Università di Milano, Viale Abruzzi 42, I-20131 Milano, Italy (literal)
- Titolo
- Bent metallocenes containing ancillary ligands in ring-bridging chains. Synthesis, spectroscopy, and X-ray crystal structure of [2,6-pyridinediylbis(methylcyclopentadienyl)]chromium(II) (literal)
- Abstract
- Cr[(eta5-C5H4CH2)2-2,6-C5H3N] (CrL) has been obtained by metathesis reaction between CrCl2 and Na2[(C5H4CH2)2-2,6-C5H3N] in THF at room temperature. Low-temperature H-1 NMR studies of CrL are reported. The solid state structure of CrL was determined by single crystal X-ray analysis (monoclinic, C2/c, a = 13.662(3) angstrom, b = 8.975(2) angstrom, c = 21.085(3) angstrom, beta = 95.11(4)-degrees, V = 2575.1(9) angstrom3, z = 8, R = 0.041, R(w) = 0.052 for 1619 measured reflections with I > 3sigma(I)). The ligand is bound to the metal atom via the two bent cyclopentadienyl rings with distances Cr-Cg(1) (Cg = gravity center) of 1.849(5) angstrom and Cr-Cg(2) of 1.840(5) angstrom, with the pyridine nitrogen at a distance Cr-N of 2.521(4) angstrom, which is the longest Cr-N value yet reported. The effects of the reduction in symmetry of this bent chromocene with respect to the unsubstituted one, which results in the perturbation of the axial ligand field typical of the undistorted metallocenes, are discussed in view of magnetic and optical investigations. (literal)
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