配盐[(μ-PhSe)(μ-CO)Fe_2(CO)_6][Et_3NH]的亲电反应研究——(μ-苯硒)(μ-酰基)及(μ-苯硒)(μ-烯基)六羰基二铁配合物的合成及结构

Study on Electrophilic Reactions of [μ-PhSe) (μ-CO)Fe_2(CO)_6] [Et_3NH]——Synthesis and Characterization of (μ-Phenylselenido) (μ-acyl) and (μ-Phenylselenido) (μ-Vinyl)diiron Hexacarbonyl Complexes

本文研究由Fe_3(CO)_12,PhSeH,Et_3N所形成的配盐[(μ—PhSe)(μ—CO)Fe_2(CO)_6][Et_3NH]与对甲氧基苯甲酰氯、乙酰氯、丙酰氯、苯乙酰氯、α-甲基丙烯酰氯、巴豆酰氯、肉佳酰氯、苯乙炔和β-溴代苯乙烯的反应和机理,合成八个既含μ-苯硒又含μ-酰基或μ-烯基配体的六羰基二铁配合物除用元素分析,MS、IR、~1H NMR表征它们的结构外,尚测得(μ-PhSe)(μ-σ,π-PhCH=CH)Fe_2(CO)_6的单晶结构.该分子单晶的空间群为P2_1/c,晶胞参数α=0.9236(2),b=1.0966(3),c=2.0348(6)nm,β=101.53(1)°,D_x=1.77g/cm^3、Z=4,R=0.054,R_W=0.

Reactions of the complex salt [(μ-PhSe) (μ-CO)Fe2(CO)6] [Et3NH] formed from Fe3-(CO)12, PhSeH and Et3N, with phenylacetylene, β-bromostyrene or p-methoxybenzoyl, acetyl, propanoyl, phenylacetyl, αa-methylacryloyl, crotonoyl and cinnamoyl chlorides were studied. Eight new (μ-phenylselenido) (μ-acyl) and (μ-phenylselenido) (μ-vinyl) diiron hexacarbonyl complexes were synthesized and characterized by elemental analysis, MS, 1H NMR and IR spectroscopy, as well as the single-crystal molecular structure of (μ-PhSe) (μ-σ, π-PhCH=CH)Fe2 (CO)6 determined by X-ray diffraction. Its space group is P21/c with cell parameters a = 0.9236(2), b = 1.0966(3), c = 2.0348(6)nm, β= 101.53(1)°, Dx=1.77g/ cm3, Z=4, R = 0.054, Rw = 0.061.