title: Unbridged Au(II)-Au(II) bonds are theoretically allowed.
abstract: The bonding in the unbridged closed-shell Au(II)-Au(II) dimers X(4)Au(2)(C(5)H(5)N)(2), X = H, F-I and CF(3), is analyzed and the short Au-Au bonds around 250 pm are reproduced by a novel 6s6p(z)5d(xy) hybridization.
authors: Department of Chemistry, Tsinghua University, 100 084 Beijing, China.
authors: Xiao-Gen
authors: XG
authors: Xiong
authors: Pekka
authors: P
authors: Pyykkö