Acta Crystallographica, Section C: Crystal Structure Communications p. 3135 - 3138 (1996)
Update date:2022-07-31
Topics:
McWhannell
Rosair
Welch
Teixidor
Vinas
The two crystallographically independent molecules of the title compound, 1-[(C6H5)2P]-2-C6H5-1,2-C2B10H10 (C20H25B10P), in the asymmetric fraction of the unit cell are highly congruent. The conformation of the cage phenyl groups is defined by θ=1.15° and the average C1-C2 distance is 1.744(8)A, which is significantly longer than that usually found for 1,2-C2B10H10 compounds. The PPh2 substituent is tilted away from an idealized radical position on C1 as a result of intramolecular crowding.
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