title: Analyzing ammonia bridges--and more about bonding in boron-rich solids.
abstract: Three types of boron-rich compounds in unusual bonding situations are described: First, salts that contain closo-hydroborate anions and exhibit hydrogen and dihydrogen bonds and a strong ammonia network; second, boron-rich metal borides with an unexpected metal-metal bond stabilized by Peierls distortion; and third, nanoscale metal borides that bind selectively to certain heptapeptides identified by the phage display technique.
authors.affiliation: Eduard-Zintl-Institute of Inorganic and Physical Chemistry Technische Universität Darmstadt Alarich-Weiss-Str. 12 D-64287 Darmstadt, Germany. albert@ac.chemie.tu-darmstadt.de.
authors.forename: Barbara
authors.initials: B
authors.lastname: Albert
authors.affiliation: Eduard-Zintl-Institute of Inorganic and Physical Chemistry Technische Universität Darmstadt Alarich-Weiss-Str. 12 D-64287 Darmstadt, Germany.
authors.forename: Kathrin
authors.initials: K
authors.lastname: Hofmann
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D001880:Boranes / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D010446:Peptide Fragments / Q000737:chemistry*; D028561:Transition Elements / Q000737:chemistry*
chemical_list: D001880:Boranes; D056831:Coordination Complexes; D010446:Peptide Fragments; D028561:Transition Elements; C049893:nickel boride; D000641:Ammonia; D009532:Nickel