2012/01/12 by Ulrich Behrens, Frank Hoffmann, Falk Olbrich +1 · 2 citations
Chemistry · Environmental Science · #Chemical Synthesis and Characterization #Coordination Chemistry and Organometallics #Crystallography and molecular interactions
paper · doi:10.1021/om200943n
openalex publication_date 2012/01/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Lithium and sodium tetraphenylborate were subjected to an X-ray diffraction analysis to elucidate the solid-state structures at room (RT) and low temperature (LT). As in the potassium, rubidium, and cesium tetraphenylborates the lithium tetraphenylborate forms polymeric columns consisting of alternating Li + and [B(C 6 H 5 ) 4 ] − ions. The lithium cations are coordinated by four η 1 -bonded phenyl rings of two tetraphenylborate anions. Each polymeric column is surrounded by six adjacent columns. The RT structure of sodium tetraphenylborate is almost identical with those of the heavier salts KB(C 6 H 5 ) 4, RbB(C 6 H 5 ) 4, and CsB(C 6 H 5 ) 4 (columns of alternating M + and [B(C 6 H 5 ) 4 ] − ions; each column is surrounded by four adjacent columns). The LT structure of NaB(C 6 H 5 ) 4 is different and resembles the solid-state structure of the lithium salt. In addition, single-crystal structures of RbB(C 6 H 5 ) 4 (LT) and CsB(C 6 H 5 ) 4 (RT) have been determined for the first time at the temperature specified.