Substitution reaction of triphenylphosphine oxide with rare-earth metal phosphido methyl complexes. (8th April 2015)

• Record Type: Journal Article
• Authors: Lv, Yingdong; Zhou, Jiliang; Leng, Xuebing; Chen, Yaofeng
• Is Part Of: New journal of chemistry. Volume 39:Number 10(2015:Oct.)
• Page Start: 7582
• Page End: 7588
• Publication Date: 2015-04-08
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c5nj00335k
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Rare-earth metal phosphido methyl complexes [L Ln(Me){P(H)Ar}] react with triphenylphosphine oxide to give [L Ln(Ph){CH2 P(O)Ph2 }], indicating C(alkyl)–P bond formation and C(aryl)–P bond cleavage. Abstract : Rare-earth metal phosphido methyl complexes, [L Ln(Me){P(H)Ar}] (L = [MeC{N(DIPP)}CHC(Me)(NCH2 CH2 NMe2 )] −, DIPP = 2, 6- i Pr2 C6 H3 ;1 : Ln = Sc, Ar = 2, 4, 6- t Bu3 C6 H2 ;2 : Ln = Sc, Ar = 2, 6- i Pr2 C6 H3 ;3 : Ln = Sc, Ar = 2, 6-Me2 C6 H3 ;4 : Ln = Lu, Ar = 2, 4, 6- t Bu3 C6 H2 ;5 : Ln = Lu, Ar = 2, 6- i Pr2 C6 H3 ), were synthesized and characterized. Complexes1–5 reacted with triphenylphosphine oxide (Ph3 PO) to give [L Ln(Ph){CH2 P(O)Ph2 }] (Ln = Sc(6 ), Lu(7 )), by a mechanism that includes C(alkyl)–P bond formation and C(aryl)–P bond cleavage. The molecular structures of1, 3 and7 were determined by single-crystal X-ray diffraction. A pathway for the formation of6 and7 was suggested.