Premium
Weak Interactions under Pressure: hp ‐CuBi and Its Analogues
Author(s) -
Guo Kai,
Akselrud Lev,
Bobnar Matej,
Burkhardt Ulrich,
Schmidt Marcus,
Zhao JingTai,
Schwarz Ulrich,
Grin Yuri
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201700712
Subject(s) - bismuth , van der waals force , metastability , copper , chemistry , lone pair , crystallography , electrical resistivity and conductivity , chemical bond , metal , superconductivity , materials science , chemical physics , condensed matter physics , molecule , physics , organic chemistry , quantum mechanics
The metastable binary compound hp‐CuBi was obtained from the direct chemical reaction between copper and bismuth at a pressure of 5 GPa and a temperature of 720 K. The atomic arrangement comprises slabs of puckered Cu layers sandwiched between Bi planes. The QTAIM charges calculated for compounds of bismuth with transition metals reveal negligible charge transfer for hp‐CuBi. Analysis of the chemical bonding with position‐space techniques discloses multicenter interactions within the Bi‐Cu‐Bi slabs and lone‐pair interactions of the van der Waals type between these entities. hp‐CuBi exhibits metal‐type electrical conductivity with superconductivity below T c =1.3 K.