2024年4月16日发(作者:blouse)
第27卷第3期
2011年3月
无 机 化 学 学 报
Vo1.27 No.3
571—574
CHINESE JOURNAL OF INORGANIC CHEMISTRY
双核Fe配合物[ 5.csa4)c6a,。(CMaS)Fe(CO)2]2的合成和晶体结构
田利娟・ 马志宏z 刘晓焕 韩占刚・ 郑学忠 林 进 '
f 河北师范大学化学与材料科学学院,石家庄
f 河北医科大学基础医学院,石家庄
050016)
050017)
摘要:由侧链带有噻吩的环戊二烯基配体CsH C H。。C4H,S与Fe(CO) 在二甲苯中加热回流,合成了1个新颖的四羰基二铁配合
物『f叩s—GH ̄)C H o(C H,S)Fe(c0)21。。通过元素分析、IR、 H NMR对其结构进行了表征,用x一射线单晶衍射确定了其结构。x-射线单
晶衍射表明配合物中有2个桥羰基和2个端羰基,Fe—Fe的键长为0.2546500)nm。
关键词:羰基铁;结构;环戊二烯基;合成
中图分类号:O614.81+1 文献标识码:A 文章编号:1001—4861(2011)03—0571—04
Synthesis and Crystal Structure of Binuclear Iron Complex
【 -C5II4)C6II10(C 3s)Fe(Co)2】z
TIAN Li。Juan MA Zhi.H。n LIU Xia。一Huan HAN Zhan—Cang ZHENG Xne-Zhong LIN Jin '
( C。lle of Chemistry&Moterial Science,Hebei Normal University,Sh ̄jiazh ang 050016,Ch
(2C。№ of Basic Medicine,Hebei Medical University,Shqiazhuang 050017,China)
Abstract:The reaction of the thieny1 side chain functionalized cyclopentadienyl ligand CsH5C6H1oC4H3S with Fe(CO)5
in refluxing xy1ene gave the n。ve1 cycl。pentadienyl tetracarbonyl diiron c。mp。und【(叼 ・c5H4)c6H1。(C4H3s)Fe(c0)2J2。
Tbe structure。f the c。mp0und was characterized by e1ementa1 analysis,IR, H NMR spectra and X-ray single crystal
diffracti。n.The X—ray crystal stⅢcture indicates the structure with bridging and terminal CO gr。ups and the bond
length of Fe—Fe is 0.254 65(10)nm.CCDC:768950・
Key words:carbonyl iron;structure;cyclopentadienyl;synthesis
The COOrdination chemistry of the cyclopentadi—
eny1 have been extensively studied since the ferrocene
has been discovered in 1 950s -21.Replacement of the
hydrogen atoms by other substituents alters both the
thienyl of the cyclopentadienyl ligand.Compared to the
O.don0r and N.donor ligands,the coordination ability
0f S-donor is slitlgy weak.The S atom of the thienyl
maybe coordinate to metal center by ̄71[7- .SO the thienyl
side-chain—functionalized cyclopentadienyl ligands can
coordinate to the metal center by r/ model and by 11
steric and electmnic influences of the叼 -eyclopenta。
dienyl ring,resulting in differing reactivity and stability
of the substituted cyclopentadienyl metal complexes .
Rencently.people have turned their attention to the
m0de1 for S atom.The interest of the novel reaction led
us t0 investigate the reactivity of Fe(CO)5 with C5H5C6
H1oC4H3S ligand and determined the structure of the
product.
heterocyclics of the side chain of cyclopentadienyl .
But few papers have reported on the bearing pendant
收稿日期:2010.05—04。收修改稿日期:2010—1 1-09。
河北省自然科学基金fN。.B2008000150)、河北师范大学博士启动基金(N。.L2o05B18)和河北师范大学重点基金(N。.L20o9zO6)资助项目。
通讯联系人 E—mail:linjin64@126.corn
572 无机化学学报 第27卷
1 Experimental
eluent.The dark—red band was collected and gave the
compound as dark-red crystals(O.78 g,57-2%).m.P.
1.1 General procedures
A11 procedures were performed under a dry
oxygen—free argon atmosphere by using standard
216℃.Ana1.Calc.for C34H ̄O4Fe2S2(%):c,59.82;S,
9.38;H,5.02.Found(%):C,59.85;S,9.35;H,4.98.IR
(PCO,em ):1 944s(terminal co),l 763s(bridging co).
H NMR(500 MHz,CDC13,ppm): 1.36-1.72(m,20H,
Schlenk techniques.A majority of solvents were refined
from sodium/diphenyl ketone under an atmosphere of
nitrogen.Methylene chloride was distilled over P205
under nitrogen.Furthermore,the chromatographic
(cn2)5),4.O9(in,4H,C5H4),5.85(m,4H,C5H4),6.96(d,
2.0 Hz,2H,C4H3S),7.00(m,2H,C4H3S),7.15(d, =
=
6.0 Hz,2H,C H3S).
1.3 Crystal structure determination
The suitable single crystal of compound C=j4H=I4O4
spectrum was employed using dichloromethane and
petroleum ether as eluent.
IR spectra was recorded as KBr pills with a FTIR
FeeS2 was prepared in the solvents of hexane/CH2C12( :
V:1:21 which slowly voatilized at room temperature.
The crystal data of the title compound was collected at
8900 spectrometer.Elemental analysis was performed
with a VARIO EL llI analyzer and H NMR spectrum
was recorded with a Bruker AV 500 instrument.The
ligand C5HsC6H1oC4H3S was prepared according to the
1iteratureI91.
1.2 Synthesis of the complex
298(21 K with a Bruker Smart Apex CCD diffraetometer,
using graphite—monochromated Mo Ka radiation( 一to
scans.A=0.07 1 073 nm).A total of 7 463 reflections
were collected and 2 643 were unique inf=0.028 4),of
which 2 468 were observed f1>2o- 1.The structure was
solved by direct methods with SHELXS一97 program and
refined with SHELXL 97 by fu11.matrix least.squares
A mixture of the ligand C5H5C6H1oC4H3S(0.920 g,
4.0 nlmo1)and Fe(CO)5(0.7 mL,5.0 mmo1)of the xylene
(35 mL)was stired and refluxed for 14 h.After removal
of the xylene,the residue was dissolved and filtered
using the methylene chloride.After removal of solvent,
the residue was chromatographed on an alumina
techniques on F .A11 non—hydrogen atoms were refined
anisotropically and hydrogen atoms isotropically.
Crystallographic data is summarized in Table 1.
CCDC:768950.
column using CH2ClJPetroleum ether fV: =1:21 as
Table 1 Crys ̄i data and structure refinement for the title complex
Empirical formula
Formula weight
C H
682.43
e2S2 F(O00)
Crystal size/mm
708
O.46x0 34x0 21
Temperature/K
Wavelength/nnl
298(2)
O.07 1 073
0 range for data collection/(。)
Limitingindices
2.84 to 25.01
-8≤h≤8.一32≤ ≤32.一5≤f≤9
Crystal system
Space group
Monoclinic
尸2,
Reflections collected/unique
Completeness to 0=25.01。/%
) 7 463/2 643(O.028 4)
98.00
Ⅱ/nm 0.743 25(1 41 Absorption correction Semi—empirical from equivalents
b/rim
c/nm
I8/(。)
2.765 2(51
O.785 02(14、
108.659(2)
Max.and rain.transmission
Refinement method
Data/restraints/parameters
0.790 and 0.639
Full-matrix least-squares on F
2 643/830/27 1
/nm
Z
1.528 6(51
2
Goodness of fit on F0
Final R indices【,>2 ∽)
1.012
RI=0.055 2 wR2=O 185 5
D /(g・Cnl。)
肛/mm
1.483
1.123
R indices(all data)
Largest dif.peak and hole(e・nm-3)
R1=O 058 5,wR2=0.189 2
536 and一675
2 Results and discussion
2.1 Synthesis of complex
When the ligand C5HsC6H1oC4H3S reacted with
Fe(CO)5 in refluxing xylene for 14 h,the corresponding
Fe-Fe bonded dinuclear complex[(77 一C5H4)C6H1o(C4H3S)
Fe(CO)2]2 was synthesized.The equation of the reaction
is followed(Scheme 1).
574 无机化学学报 第27卷
similar to the[(77 一C5H5)Fe(CO)(/x—C0)]2 which has a
trans conformation with two bridging carbonyl ligands
and two terminal carbonyl ligands.The difference of the
substituents has a little influence on the Fe.Fe bond
length.
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