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[BP 2 ] 3⊖ and [BAs 2 ] 3⊖ , Zintl Anions with Propadiene Structure
Author(s) -
von Schnering HansGeorg,
Somer Mehmet,
Hartweg Martin,
Peters Karl
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199000651
Subject(s) - boron , ternary operation , crystallography , chemistry , bond length , spectral line , x ray crystallography , group 2 organometallic chemistry , crystal structure , physics , molecule , diffraction , organic chemistry , astronomy , computer science , optics , programming language
It is not the composition of the compounds K 3 BX 2 ( 1 : X = P, 2 : X = As) that enforces the propadiene‐like structure on their anions [XBX] 3⊖ which was established by X‐ray structure analyses and vibration spectra. Bond lengths of d B−P = 176.7 and d B−As = 186.8 pm were determined; these correspond to a Pauling bond order of 1.9. The compounds 1 and 2 , the first ternary boron phosphides and arsenides, are accessible at 1000–1100 K from the elements or by use of BP and BAs, respectively.