Phosphorus−Phosphorus Coupling Constants in Mixed-Phosphine Tricarbonyl Iron Complexes, Fe(CO)<sub>3</sub>LL‘. Crystal Structure of <i>trans</i>-Fe(CO)<sub>3</sub>(PEt<sub>3</sub>)(PPh<sub>3</sub>)
作者:Richard L. Keiter、John William Benson、Ellen A. Keiter、Travis A. Harris、Matthew W. Hayner、Laura L. Mosimann、Eric E. Karch、Carol A. Boecker、Donna M. Olson、Jennaver VanderVeen、Douglas E. Brandt、Arnold L. Rheingold、Glenn P. A. Yap
DOI:10.1021/om9609224
日期:1997.5.1
complexes, trans-Fe(CO)3LL‘ (L = PPh3, L‘ = PPh2Me, PPhMe2, PMe3, PPh2Et, PEt3, PPh2CHCH2, PPh2H, AsPh3, P(OPh)3; L = PMe3, L‘ = PEt3, PPh2Et, PCy3, PPh2Me, PPhMe; L = PEt3, L‘ = PPh2Me; L = PPh2H, L‘ = PPh2CHCH2, PPh2Et; L = AsPh3, L‘ = PPhMe2, P(OPh)3, P(OMe)3, P(OEt)3), have been obtained from the stepwise reaction of phosphines with Fe(CO)3(BDA) (BDA = benzylideneacetone) or Fe(CO)3(AsPh3)2 and from
混合
配体配合物,反式-Fe(CO)3 L-L '(L = PPH 3,L'= PPH 2我,PPhMe 2,PME 3,PPH 2的Et,PET 3,PPH 2 CH CH 2,PPH 2 H, A
SPH 3,P(OPH)3 ; L = PME 3,L '= PET 3,PPH 2的Et,PCY 3,PPH 2我,PPhMe; L = PET 3,L'= PPH 2甲基; L = PPH 2 ħ ,L'= PPh 2 CH CH 2,PPh 2 Et;L = A
SPh 3,L'= PPhMe 2,P(OPh)3,P(OMe)3,P(OEt)3),是由膦与Fe(CO)3(B
DA)(B
DA )的逐步反应制得的=亚
苄基丙酮)或Fe(CO)3(A
SPh 3)2,并由膦与Fe(CO)4 PPh 3在碱的存在下反应而得。2 J PP耦合常数值与膦的总和p K a之间存在很强的负相关性价值观。通过对
配体