Donor-Akzeptor-Komplexe von Halogenidionen mit 1.4-Diiodtetrafluorbenzol/Donor-Acceptor Complexes of Halide Ions with 1,4-Diiodotetrafluorobenzene

Donor-Akzeptor-Komplexe von Halogenidionen mit 1.4-Diiodtetrafluorbenzol/Donor-Acceptor Complexes of Halide Ions with 1,4-Diiodotetrafluorobenzene
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1,4-二碘四氟苯供体-卤化物复合物/卤化物离子与 1,4-二碘四氟苯的供体-受体配合物

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发表时间:
1999
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通讯作者:
K. Dehnicke
K. Dehnicke
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作者:
Jutta Grebe;G. Geiseler;K. Harms;K. Dehnicke

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(Ph4P)X和(Me4N)X(X = Cl,Br,I)分别与1,4-二碘四氟苯在CH_2Cl_2和CH_3CN溶液中反应,得到给体-受体配合物(Ph4 PM(C6 F4 I2)Cl2]·4 CH 2Cl2(1)、(Ph4 P)2[(C6 F4 I2)Br2]·2 CH 2Cl2(2)、(Me 4 N)[(C6 F4 I2)Cl](3)、(Me 4 N)[(C6 F4 I2)Br]·CH 3CN(4)、(Ph4 P)2[(C6 F4 I2)3Br2]·4CH 2Cl2(5),(Ph 4P)2[(C6 F4 I2)3 I2](6)和(Me 4 N)2[(C6 F4 I2)3 I2](7)。所有配合物的特征在于单X射线晶体结构测定。1:空间群P1,Z = 1,203 K时的晶格尺寸:a = 1090.2(1),B = 1206.2(1),c = 1242.8(1)pm,α = 91,84(1)°,β = 106.60(1)°,γ = 99.84(1)°。2:空间群P1 ~,Z = 1,233 K时的晶格尺寸:a = 1129.7(2),B = 1183.9(1),c = 1293.4(1)pm,α = 65.52(1)°,β = 65.74(1)°,γ = 89.02(1)°。3:空间群P21/n,Z = 4,243 K时的晶格尺寸:a = 714.8(1),B = 2405.7(3),c = 930.8(1)pm,β = 96.38(1)°。4:空间群P21/c,Z = 4,203 K时的晶格尺寸:a = 1400.8(1),B = 1669.9(2),c = 795.9(1)pm,β = 102.81(1)°。5:空间群Pbca,Z = 4,223 K时的晶格尺寸:a = 2106.0(4),B = 1566.8(3),c = 2445.8(4)pm。6:空间群P1,Z = 1,203 K时的晶格尺寸:a = 1150.9(1),B = 1278.9(1),c = 1292.9(2)pm,α = 65.47(1)°,β = 82.07(1)°,γ = 83.62(1)°。7:空间群Pbca,Z = 4,223 K时的晶格尺寸:a = 1210.5(5),B = 1429.0(6),c = 2470.3(12)pm。在所有配合物中,受体分子C6 F4 I2与卤素供体离子以线性排列C-I· · ·X-配位。在化合物1和化合物2中,卤离子作为末端给体形成双阴离子[X·· ·I-C6 F4-I· · ·X]2-(X = Cl,Br)。配合物3和配合物4形成具有μ-X-桥的锯齿形聚合阴离子链,其键角I· · ·Cl· · ·I为77.2°,I· · ·Br· · ·I为74.3°。配合物5 - 7的特征在于通过1,4-二碘四氟苯分子的1-x3-X-桥连卤离子和μ-桥连1,4-二碘四氟苯分子的三维阴离子网络。
(Ph4P)X as well as (Me4N)X (X = Cl, Br, I) react with 1,4-diiodotetrafluorobenzene in CH2C12 and CH3CN solutions, respectively, to give the donoracceptor complexes (Ph4PM (C6F4I2)Cl2]·4 CH2Cl2 (1), (Ph4P)2[(C6F4I2)Br2]·2 CH2Cl2 (2), (Me4N)[(C6F4I2)Cl] (3), (Me4N)[(C6F4I2)Br]·CH3CN (4), (Ph4P)2[(C6F4I2)3Br2]·4CH2Cl2 (5), (Ph4P)2[(C6F4I2)3I2] (6) and (Me4N)2[(C6F4I2)3I2] (7). All complexes have been characterized by single X-ray crystallographic structure determinations. 1: Space group P1̄, Z = 1, lattice dimensions at 203 K: a = 1090.2(1), b = 1206.2(1), c = 1242.8(1) pm, α = 91,84(1)°, β = 106.60(1)°, γ = 99.84(1)°. 2: Space group P1̄, Z = 1, lattice dimensions at 233 K: a = 1129.7(2), b = 1183.9(1), c = 1293.4(1) pm, α = 65.52(1)°, β = 65.74(1)°, γ = 89.02(1)°. 3: Space group P21/n, Z = 4, lattice dimensions at 243 K: a = 714.8(1), b = 2405.7(3), c = 930.8(1) pm, β = 96.38(1)°. 4: Space group P21/c, Z = 4, lattice dimensions at 203 K: a = 1400.8(1), b = 1669.9(2), c = 795.9(1) pm, β = 102.81(1)°. 5: Space group Pbca, Z = 4, lattice dimensions at 223 K: a = 2106.0(4), b = 1566.8(3), c = 2445.8(4) pm. 6 : Space group P1̄, Z = 1, lattice dimensions at 203 K: a = 1150.9(1), b = 1278.9(1), c = 1292.9(2) pm, α = 65.47(1)°, β = 82.07(1)°, γ = 83.62(1)°. 7: Space group Pbca, Z = 4, lattice dimensions at 223 K: a = 1210.5(5), b = 1429.0(6), c = 2470.3(12) pm. In all complexes the acceptor molecule C6F4I2 coordinates with the halide donor ions in linear arrangements C-I· · ·X- . In 1 and 2 the halide ions act as terminal donors to form the dianionic species [X· · ·I-C6F4-I· · ·X]2- (X = Cl, Br). Complexes 3 and 4 form polymeric anionic zigzag chains with μ-X- bridges and bond angles I· · ·Cl· · ·I of 77.2° and I· · ·Br· · ·I of 74.3°. Complexes 5 - 7 are characterized by three-dimensional anionic networks via /x3-X- bridging halide ions and μ-bridging 1,4-diiodotetrafluorobenzene molecules.