Stern-Gerlach Experiments of One-Dimensional Metal-Benzene Sandwich Clusters: M(CH) (M = Al, Sc, Ti, and V).
A molecular beam of multilayer metal-benzene organometallic clusters M(CH) (M = Al, Sc, Ti, and V) was produced by a laser vaporization synthesis method, and their magnetic deflections were measured. Multidecker sandwich clusters of transition-metal atoms and benzene Sc(CH) (n = 1, 2) and V(CH) (n =...
| Publicado en: | Journal of the American Chemical Society Vol. 129; no. 27; pp. 8473 - 8481 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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American Chemical Society
7/11/2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=25948066&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 25948066 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 7/11/2007 vid: 129 iid: 27 pid: 997 pub: American Chemical Society artinfo: ui: 25948066 10.1021/ja070137q ppf: 8473 ppct: 8 formats: tig: atl: Stern-Gerlach Experiments of One-Dimensional Metal-Benzene Sandwich Clusters: M(CH) (M = Al, Sc, Ti, and V). aug: au: Miyajima, Ken Yabushita, Satoshi Knickelbein, Mark B. Nakajima, Atsushi affil: Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan Chemistry Division and Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439 CREST, Japan Science and Technology Agency (JST), c/o Department of Chemistry, Keio University, Yokohama 223-8522, Japan su: Organometallic compounds Molecular beams Benzene Metal clusters Microclusters Relaxation phenomena Magnetism sug: subj: Organometallic compounds Molecular beams Benzene Metal clusters Microclusters Relaxation phenomena Magnetism ab: A molecular beam of multilayer metal-benzene organometallic clusters M(CH) (M = Al, Sc, Ti, and V) was produced by a laser vaporization synthesis method, and their magnetic deflections were measured. Multidecker sandwich clusters of transition-metal atoms and benzene Sc(CH) (n = 1, 2) and V(CH) (n = 1-4) possess magnetic moments that increase monotonously with n. The magnetic moments of AI(CH), Sc(CH), and V(CH) are smaller than that of their spin-only values as a result of intracluster spin relaxation, an effect that depends on the orbital angular momenta and bonding characters of the orbitals containing electron spin. While Ti(CH) was found to be nonmagnetic, Ti(CH) (n = 2, 3) possess nonzero magnetic moments. The mechanism of ferromagnetic spin ordering in M-(CH) (M = Sc, Ti, V) is discussed qualitatively in terms of molecular orbital analysis. These sandwich species represent a new class of one-dimensional molecular magnets in which the transition-metal atoms are formally zerovalent. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2007 holdings: @attributes: islocal: N |
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