88635-81-8Relevant articles and documents
Secondary bonding in organobismuth compounds. Comparison of the structures of 2,2′,5,5′-tetramethyl-1,1′-dibismaferrocene and 2,2′,5,5′-tetramethylbibismole
Ashe III, Arthur J.,Kampf, Jeff W.,Puranik, Dhananjay B.,Al-Taweel, Samir M.
, p. 2743 - 2745 (1992)
The reaction of 1-phenyl-2,5-dimethylbismole (5) with lithium In THF followed by FeCl2 gave red-black crystals of 2,2′,5,5′-tetramethyl-1,1′-dibismaferrocene (3), while the reaction of 5 with sodium in liquid ammonia followed by 1,2-dichloroethane gave green crystals of 2,2′,5,5′-tetramethylbibismole (4). Single-crystal X-ray diffraction studies show that 3 adopts a ferrocene-like arrangement with a close (3.688 (1) ?) inter-ring Bi?Bi contact, while 4 has a zigzag chain of Bi atoms with close intermolecular contacts of 3.6595 (5) ?.
Synthesis of 2,2′,5,5′-tetramethylbibismole. A thermochromic dibismuthine
Ashe III, Arthur J.,Drone, Frederick J.
, p. 495 - 496 (1984)
The reaction of 1,1-dibutyl-2,5-dimethylstannole with iodine gave 2(Z),5(Z)-diiodohexa-2,4-diene, which on treatment with butyllithium followed by phenylbismuth diiodide afforded 1-phenyl-2,5-dimethylbismole. The bismole was converted to the thermochromic 2,2′,5,5′-tetramethylbibismole by reaction of sodium in liquid ammonia followed by treatment with 1,2-dichloroethane.
