Tripod ligands of constitutional C1 symmetry containing a deliberate set of mixed P/S donor groups: synthesis and coordination chemistry
作者:Rainer Soltek、Gottfried Huttner、Laszlo Zsolnai、Alexander Driess
DOI:10.1016/s0020-1693(97)05784-8
日期:1998.3
tripod ligands as evidenced by the isolation and structural characterization of three derivatives [H 3 CC(CH 2 PPh 2 )(CH 2 SR)(CH 2 SR′)Mo(CO) 3 ] ( 11a, 11c, 11e ). It is shown that under 1 bar CO substitution of one SR group by CO occurs to give [H 3 CC(CH 2 PPh 2 )(CH 2 SR)(CH 2 SR′)Mo(CO) 4 ] ( 12 ). With 11a , [H 3 CC(CH 2 PPh 2 )(CH 2 SPh)(CH 2 SBn)Mo(CO) 3 ], as the starting compound the carbonylation
制备具有混合P / S供体组的三脚架配体的各种有效策略,例如H 3 CC(CH 2 PPh 2)(CH 2 SR)(CH 2 SR')(6)或三个不同的S供体H 3 CC(描述了CH 2 SR)(CH 2 SR')(CH 2 SR'')(5)。化合物5能够在诸如[H 3 CC(CH 2 SEt)(CH 2 S 1 Pr)(CH 2 S 1 Bu)Mo(CO)3](9b)的络合物中用作三齿螯合配体。三种衍生物[H 3 CC(CH 2 PPh 2)(CH 2 SR)(CH 2 SR')Mo(CO)3的分离和结构表征证明,相当相似的化合物6作为三脚架配体起作用(11a,11c ,11e)。结果表明,在1 bar的CO下,一个SR基团被CO取代,生成[H 3 CC(CH 2 PPh 2)(CH 2 SR)(CH 2 SR')Mo(CO)4](12)。对于11a,[H 3 CC(CH 2 PPh 2)(CH