Abstract
The title compound, C21H21ClP+Br−, is the bromide salt of a mixed aryl-alkyl phosphonium cation. C–P–C angles span a range of 107.20 (10)–111.18 (10)°. The non-H atoms of the 3-chloropropyl group adopt a staggered conformation [C–C–C–Cl torsion angle: −72.0 (3)°]. In the crystal, C—H⋯Br contacts connect the entities of the title compound into a double zigzag chain along b. These chains are linked into a supramolecular layer lying parallel to (10-1) by C—H⋯π interactions.
Highlights
The title compound, C21H21ClP+Br, is the bromide salt of a mixed aryl-alkyl phosphonium cation
Phosphonium salts are widely used in organic synthesis for the preparation of alkenes (Maercker, 1965; Carruthers, 1971)
Two C–H···Br contacts whose range falls by more than 0.1 Å below the sum of van der Waals radii of the corresponding atoms are observed. These are supported by a hydrogen atom of a phenyl group as well as a hydrogen atom of the methylene group directly bonded to the phosphorus atom
Summary
Cg1 is the centroid of the C31–C36 ring. R factor = 0.034; wR factor = 0.107; data-to-parameter ratio = 21.6. The title compound, C21H21ClP+Br, is the bromide salt of a mixed aryl-alkyl phosphonium cation. C–P–C angles span a range of 107.20 (10)–111.18 (10). The non-H atoms of the 3chloropropyl group adopt a staggered conformation [C–C–C–. C—H Br contacts connect the entities of the title compound into a double zigzag chain along b. These chains are linked into a supramolecular layer lying parallel to (101) by C—H interactions
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