title: Boron atoms as spin carriers in two- and three-dimensional systems.
abstract: Paramagnetic compounds with at least partially boron-centered electron spin can be constructed using either the prototypically electron-accepting boron atoms bridged by planar pi-conjugated organic systems, or by taking advantage of the three-dimensional delocalized bonding in oligonuclear borane, haloborane, or carborane clusters. The concept of mixed valency can thus be transferred from organic and transition-metal chemistry to main-group-element molecules, and density functional theory is capable of reproducing the variable spin distribution.
authors.affiliation: Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany. kaim@iac.uni-stuttgart.de
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kaim
authors.forename: Narayan S
authors.initials: NS
authors.lastname: Hosmane
authors.forename: Stanislav
authors.initials: S
authors.lastname: Zális
authors.forename: John A
authors.initials: JA
authors.lastname: Maguire
authors.forename: William N
authors.initials: WN
authors.lastname: Lipscomb