The structure of organophosphorus compounds. XXV. Crystal and molecular structure of fluorene-9-spiro-1-(3, 4-di-tert-butyl)-3,4-diphosphetane-2-spiro-9?-fluorne and 1,2-di-tert-butyl-1,2-diphosphorinane-(6,5,4-l,m)-fluorene-3-spiro-9?-fluorene
1983 ◽
Vol 48
(9)
◽
pp. 1425-1430
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1982 ◽
Vol 104
(6)
◽
pp. 1594-1598
◽
1995 ◽
pp. 777-781
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