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Komplexe von Halogenid‐Ionen mit 1‐Halogen‐2‐phenylacetylenen. Kristallstrukturen von PPh 4 [X(I—CC—Ph) 4 ] mit X = Cl, Br, I, von PPh 4 [Br(Br—CC—Ph) 4 ] und von NMe 4 [F(I—CC—Ph) 2 ]
Author(s) -
Ghassemzadeh Mitra,
Harms Klaus,
Dehnicke Kurt
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290121
Subject(s) - chemistry , halogen , crystal structure , halide , tetragonal crystal system , crystallography , dichloromethane , halogen bond , x ray crystallography , molecule , stereochemistry , inorganic chemistry , organic chemistry , solvent , alkyl , physics , diffraction , optics
Complexes of Halide Ions with 1‐Halogen‐2‐phenylacetylenes. Crystal Structures of PPh 4 [X(I—CC—Ph) 4 ] with X = Cl, Br, I, of PPh 4 [Br(Br—CC—Ph) 4 ], and of NMe 4 [F(I—CC—Ph) 2 ] Herrn Prof. Dr. H. Brunner zum 60. Geburtstag gewidmet. The complexes PPh 4 [X(I—CC—Ph) 4 ] with X = Cl ( 1 ), Br ( 2 ), I ( 3 ), PPh 4 [Br(Br—CC—Ph) 4 ] ( 4 ), and NMe 4 [F(I—CC—Ph) 2 ] ( 5 ) were prepared from the corresponding salts PPh 4 X and NMe 4 F, respectively, with the 1‐halogen‐2‐phenylacetylenes X—CC—Ph (X = Br, I) in dichloromethane solutions. 1—5 form colourless crystals, which were characterized by vibrational spectroscopy. According to the crystal structure determinations the halide ions in 1—4 are coordinated by the halogen atoms of the 1‐halogen‐2‐phenylacetylenes in a tetragonal‐pyramidal fashion. The fluoride ion in 5 is only twofold coordinated with a bond angle I—F—I of 110.45°.