metal-organic compounds
Chlorido{N,N′-o-phenylene-[6,6′-ethylenebis(pyridine-2-carboxamide)]}iron(III)
aDepartment of Chemical Engineering, Yibin University, Yibin 644000, People's Republic of China, and bDepartment of Chemistry, Luzhou Medicial College, Luzhou 646000, People's Republic of China
*Correspondence e-mail: ybuyl@163.com
In the title compound, [Fe(C20H14N4O2)Cl], the FeIII ion is in a distorted square-pyramidal environment, with two pyridine and two deprotonated amide N atoms in the basal plane and the Cl ion in the apical position. The FeIII ion is displaced from the basal plane of the square- pyramid towards the apical Cl atom by 0.2942 (4) Å. The molecules are linked into a three-dimensional network by C—H⋯Cl and C—H⋯O hydrogen bonds.
Related literature
For general background, see: Liu et al. (2006); Yang et al. (2007); Momenteau & Reed (1994). For related structures, see: Rath et al. (2004); Xu et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808041354/ci2736sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808041354/ci2736Isup2.hkl
1,2-[Bis(6'-pyridine-2'carboxamido)-ethane]benzene (132 mg, 0.38 mmol) and sodium acetate (80 mg, 0.76 mmol) were added to a stirred solution of FeCl3.6H2O (244 mg, 0.9 mmol) in CH3OH (20 ml). The colour of the mixture turned green almost immediately. The mixture was refluxed for 3 h and dark green microcrystals appeared. They were collected by filtration, washed with methanol, and air-dried. (123 mg, yield 75%). Single crystals suitable for X-ray diffraction were grown via diffusion of Et2O into a DMF solution of the complex. Selected IR data (KBr, cm-1):ν=1629 (C=O), 1602 (C—N), 1572, 1346, 1287, 1142, 1083, 1081, 762. MS (FAB): 398.3([Fe(bpeb)]+).
All H atoms were positioned geometrically and refined as riding, with C-H = 0.93 Å (aromatic) or 0.97 Å (methylene) and Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound. Displacement ellipsoids are drawn at the 30% probability level. |
[Fe(C20H14N4O2)Cl] | F(000) = 884 |
Mr = 433.65 | Dx = 1.600 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 9989 reflections |
a = 11.8532 (2) Å | θ = 2.2–27.4° |
b = 8.2028 (1) Å | µ = 1.01 mm−1 |
c = 19.3507 (3) Å | T = 296 K |
β = 106.889 (1)° | Plate, black |
V = 1800.31 (5) Å3 | 0.44 × 0.16 × 0.10 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 4142 independent reflections |
Radiation source: fine-focus sealed tube | 3415 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS, Sheldrick, 1996) | h = −15→15 |
Tmin = 0.778, Tmax = 1.000 | k = −10→10 |
24687 measured reflections | l = −25→25 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.126 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0642P)2 + 2.4383P] where P = (Fo2 + 2Fc2)/3 |
4142 reflections | (Δ/σ)max = 0.001 |
253 parameters | Δρmax = 0.62 e Å−3 |
0 restraints | Δρmin = −0.43 e Å−3 |
[Fe(C20H14N4O2)Cl] | V = 1800.31 (5) Å3 |
Mr = 433.65 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.8532 (2) Å | µ = 1.01 mm−1 |
b = 8.2028 (1) Å | T = 296 K |
c = 19.3507 (3) Å | 0.44 × 0.16 × 0.10 mm |
β = 106.889 (1)° |
Bruker SMART CCD area-detector diffractometer | 4142 independent reflections |
Absorption correction: multi-scan (SADABS, Sheldrick, 1996) | 3415 reflections with I > 2σ(I) |
Tmin = 0.778, Tmax = 1.000 | Rint = 0.041 |
24687 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.126 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.62 e Å−3 |
4142 reflections | Δρmin = −0.43 e Å−3 |
253 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > σ(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Fe1 | 0.45008 (3) | 0.56516 (5) | 0.62759 (2) | 0.02844 (13) | |
Cl1 | 0.49959 (7) | 0.48979 (10) | 0.74759 (4) | 0.0423 (2) | |
O1 | 0.1136 (2) | 0.6292 (4) | 0.61432 (18) | 0.0676 (8) | |
O2 | 0.5587 (2) | 0.2335 (3) | 0.51016 (14) | 0.0529 (6) | |
N1 | 0.2870 (2) | 0.5301 (3) | 0.59827 (14) | 0.0352 (5) | |
N2 | 0.4003 (2) | 0.7937 (3) | 0.64688 (12) | 0.0321 (5) | |
N3 | 0.6194 (2) | 0.5763 (3) | 0.62630 (12) | 0.0298 (5) | |
N4 | 0.44925 (19) | 0.3762 (3) | 0.57162 (12) | 0.0305 (5) | |
C1 | 0.2181 (3) | 0.6411 (4) | 0.61888 (17) | 0.0399 (7) | |
C2 | 0.2867 (3) | 0.7921 (4) | 0.64770 (16) | 0.0373 (6) | |
C3 | 0.2337 (3) | 0.9212 (4) | 0.67153 (19) | 0.0509 (9) | |
H3A | 0.1555 | 0.9156 | 0.6719 | 0.061* | |
C4 | 0.3014 (4) | 1.0606 (5) | 0.6950 (2) | 0.0564 (10) | |
H4A | 0.2696 | 1.1495 | 0.7127 | 0.068* | |
C5 | 0.4145 (4) | 1.0649 (4) | 0.69173 (18) | 0.0483 (8) | |
H5A | 0.4594 | 1.1585 | 0.7062 | 0.058* | |
C6 | 0.4643 (3) | 0.9306 (4) | 0.66690 (16) | 0.0377 (7) | |
C7 | 0.5853 (3) | 0.9393 (4) | 0.65875 (18) | 0.0443 (7) | |
H7A | 0.6159 | 1.0483 | 0.6716 | 0.053* | |
H7B | 0.5800 | 0.9222 | 0.6083 | 0.053* | |
C8 | 0.6751 (3) | 0.8146 (4) | 0.70492 (17) | 0.0418 (7) | |
H8A | 0.7468 | 0.8722 | 0.7301 | 0.050* | |
H8B | 0.6425 | 0.7683 | 0.7411 | 0.050* | |
C9 | 0.7061 (2) | 0.6787 (4) | 0.66208 (15) | 0.0352 (6) | |
C10 | 0.8207 (3) | 0.6559 (4) | 0.65877 (18) | 0.0453 (8) | |
H10A | 0.8794 | 0.7287 | 0.6824 | 0.054* | |
C11 | 0.8485 (3) | 0.5277 (5) | 0.62112 (19) | 0.0479 (8) | |
H11A | 0.9255 | 0.5124 | 0.6195 | 0.057* | |
C12 | 0.7599 (3) | 0.4217 (4) | 0.58564 (17) | 0.0413 (7) | |
H12A | 0.7760 | 0.3331 | 0.5600 | 0.050* | |
C13 | 0.6471 (2) | 0.4504 (3) | 0.58911 (15) | 0.0314 (6) | |
C14 | 0.5471 (2) | 0.3397 (4) | 0.55255 (15) | 0.0333 (6) | |
C15 | 0.2484 (2) | 0.3809 (4) | 0.56301 (16) | 0.0348 (6) | |
C16 | 0.1338 (3) | 0.3196 (4) | 0.5414 (2) | 0.0499 (8) | |
H16A | 0.0724 | 0.3773 | 0.5509 | 0.060* | |
C17 | 0.1128 (3) | 0.1721 (5) | 0.5056 (2) | 0.0590 (10) | |
H17A | 0.0364 | 0.1311 | 0.4905 | 0.071* | |
C18 | 0.2030 (3) | 0.0846 (4) | 0.4919 (2) | 0.0547 (9) | |
H18A | 0.1870 | −0.0153 | 0.4683 | 0.066* | |
C19 | 0.3178 (3) | 0.1438 (4) | 0.51280 (16) | 0.0414 (7) | |
H19A | 0.3789 | 0.0840 | 0.5041 | 0.050* | |
C20 | 0.3393 (2) | 0.2947 (3) | 0.54712 (15) | 0.0328 (6) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Fe1 | 0.0262 (2) | 0.0225 (2) | 0.0375 (2) | −0.00026 (14) | 0.01073 (15) | −0.00375 (15) |
Cl1 | 0.0483 (4) | 0.0381 (4) | 0.0427 (4) | 0.0044 (3) | 0.0169 (3) | 0.0083 (3) |
O1 | 0.0352 (13) | 0.0650 (18) | 0.109 (2) | 0.0042 (12) | 0.0307 (14) | −0.0117 (17) |
O2 | 0.0472 (13) | 0.0475 (14) | 0.0671 (15) | 0.0005 (11) | 0.0215 (11) | −0.0268 (12) |
N1 | 0.0278 (11) | 0.0299 (13) | 0.0484 (14) | 0.0000 (9) | 0.0119 (10) | −0.0014 (10) |
N2 | 0.0410 (13) | 0.0221 (11) | 0.0345 (12) | 0.0034 (10) | 0.0132 (10) | −0.0013 (9) |
N3 | 0.0287 (11) | 0.0274 (12) | 0.0334 (11) | −0.0026 (9) | 0.0091 (9) | −0.0020 (9) |
N4 | 0.0301 (11) | 0.0237 (11) | 0.0370 (12) | −0.0025 (9) | 0.0088 (9) | −0.0049 (9) |
C1 | 0.0337 (15) | 0.0377 (17) | 0.0515 (17) | 0.0065 (12) | 0.0175 (13) | 0.0020 (14) |
C2 | 0.0424 (16) | 0.0333 (15) | 0.0396 (15) | 0.0099 (12) | 0.0173 (12) | 0.0021 (12) |
C3 | 0.058 (2) | 0.047 (2) | 0.055 (2) | 0.0213 (17) | 0.0282 (17) | 0.0042 (16) |
C4 | 0.083 (3) | 0.0406 (19) | 0.0494 (19) | 0.0225 (19) | 0.0254 (18) | −0.0016 (15) |
C5 | 0.076 (2) | 0.0272 (15) | 0.0401 (16) | 0.0053 (15) | 0.0136 (16) | −0.0027 (13) |
C6 | 0.0547 (18) | 0.0249 (14) | 0.0325 (14) | 0.0017 (13) | 0.0108 (12) | 0.0010 (11) |
C7 | 0.0553 (19) | 0.0264 (15) | 0.0517 (18) | −0.0103 (13) | 0.0166 (15) | −0.0024 (13) |
C8 | 0.0421 (16) | 0.0388 (17) | 0.0411 (16) | −0.0095 (13) | 0.0069 (13) | −0.0082 (13) |
C9 | 0.0322 (14) | 0.0346 (15) | 0.0365 (14) | −0.0063 (12) | 0.0066 (11) | −0.0002 (12) |
C10 | 0.0314 (15) | 0.051 (2) | 0.0500 (18) | −0.0110 (14) | 0.0058 (13) | 0.0020 (15) |
C11 | 0.0270 (14) | 0.063 (2) | 0.0540 (19) | 0.0007 (14) | 0.0126 (13) | 0.0059 (17) |
C12 | 0.0330 (15) | 0.0472 (19) | 0.0462 (17) | 0.0054 (13) | 0.0154 (13) | 0.0001 (14) |
C13 | 0.0311 (13) | 0.0311 (14) | 0.0321 (13) | 0.0019 (11) | 0.0092 (10) | 0.0020 (11) |
C14 | 0.0339 (14) | 0.0296 (14) | 0.0360 (14) | 0.0024 (11) | 0.0094 (11) | −0.0030 (11) |
C15 | 0.0318 (14) | 0.0287 (14) | 0.0423 (15) | −0.0045 (11) | 0.0084 (11) | 0.0036 (12) |
C16 | 0.0325 (16) | 0.0450 (19) | 0.070 (2) | −0.0058 (14) | 0.0115 (15) | 0.0041 (17) |
C17 | 0.0431 (19) | 0.047 (2) | 0.079 (3) | −0.0221 (16) | 0.0051 (17) | 0.0039 (19) |
C18 | 0.063 (2) | 0.0346 (18) | 0.059 (2) | −0.0211 (16) | 0.0073 (17) | −0.0051 (15) |
C19 | 0.0493 (18) | 0.0317 (16) | 0.0420 (16) | −0.0082 (13) | 0.0114 (13) | −0.0036 (13) |
C20 | 0.0326 (14) | 0.0281 (14) | 0.0360 (14) | −0.0047 (11) | 0.0073 (11) | 0.0012 (11) |
Fe1—N1 | 1.871 (2) | C7—C8 | 1.557 (5) |
Fe1—N4 | 1.889 (2) | C7—H7A | 0.97 |
Fe1—N3 | 2.016 (2) | C7—H7B | 0.97 |
Fe1—N2 | 2.032 (2) | C8—C9 | 1.497 (4) |
Fe1—Cl1 | 2.3080 (8) | C8—H8A | 0.97 |
O1—C1 | 1.220 (4) | C8—H8B | 0.97 |
O2—C14 | 1.231 (3) | C9—C10 | 1.392 (4) |
N1—C1 | 1.358 (4) | C10—C11 | 1.373 (5) |
N1—C15 | 1.412 (4) | C10—H10A | 0.93 |
N2—C6 | 1.348 (4) | C11—C12 | 1.383 (5) |
N2—C2 | 1.350 (4) | C11—H11A | 0.93 |
N3—C9 | 1.352 (4) | C12—C13 | 1.378 (4) |
N3—C13 | 1.353 (4) | C12—H12A | 0.93 |
N4—C14 | 1.349 (4) | C13—C14 | 1.498 (4) |
N4—C20 | 1.418 (3) | C15—C16 | 1.394 (4) |
C1—C2 | 1.498 (5) | C15—C20 | 1.396 (4) |
C2—C3 | 1.378 (4) | C16—C17 | 1.380 (5) |
C3—C4 | 1.395 (6) | C16—H16A | 0.93 |
C3—H3A | 0.93 | C17—C18 | 1.376 (6) |
C4—C5 | 1.361 (6) | C17—H17A | 0.93 |
C4—H4A | 0.93 | C18—C19 | 1.390 (5) |
C5—C6 | 1.399 (4) | C18—H18A | 0.93 |
C5—H5A | 0.93 | C19—C20 | 1.392 (4) |
C6—C7 | 1.490 (5) | C19—H19A | 0.93 |
N1—Fe1—N4 | 82.38 (10) | C8—C7—H7B | 108.5 |
N1—Fe1—N3 | 161.28 (10) | H7A—C7—H7B | 107.5 |
N4—Fe1—N3 | 82.51 (9) | C9—C8—C7 | 114.1 (3) |
N1—Fe1—N2 | 82.39 (10) | C9—C8—H8A | 108.7 |
N4—Fe1—N2 | 155.32 (10) | C7—C8—H8A | 108.7 |
N3—Fe1—N2 | 107.69 (10) | C9—C8—H8B | 108.7 |
N1—Fe1—Cl1 | 101.67 (8) | C7—C8—H8B | 108.7 |
N4—Fe1—Cl1 | 108.32 (8) | H8A—C8—H8B | 107.6 |
N3—Fe1—Cl1 | 93.53 (7) | N3—C9—C10 | 120.1 (3) |
N2—Fe1—Cl1 | 93.71 (7) | N3—C9—C8 | 118.3 (3) |
C1—N1—C15 | 125.8 (3) | C10—C9—C8 | 121.7 (3) |
C1—N1—Fe1 | 117.7 (2) | C11—C10—C9 | 121.0 (3) |
C15—N1—Fe1 | 116.19 (19) | C11—C10—H10A | 119.5 |
C6—N2—C2 | 119.0 (3) | C9—C10—H10A | 119.5 |
C6—N2—Fe1 | 130.7 (2) | C10—C11—C12 | 118.7 (3) |
C2—N2—Fe1 | 109.69 (19) | C10—C11—H11A | 120.6 |
C9—N3—C13 | 118.7 (2) | C12—C11—H11A | 120.6 |
C9—N3—Fe1 | 129.3 (2) | C13—C12—C11 | 118.4 (3) |
C13—N3—Fe1 | 111.65 (18) | C13—C12—H12A | 120.8 |
C14—N4—C20 | 125.7 (2) | C11—C12—H12A | 120.8 |
C14—N4—Fe1 | 118.49 (18) | N3—C13—C12 | 123.1 (3) |
C20—N4—Fe1 | 115.45 (18) | N3—C13—C14 | 115.6 (2) |
O1—C1—N1 | 127.6 (3) | C12—C13—C14 | 121.3 (3) |
O1—C1—C2 | 121.5 (3) | O2—C14—N4 | 127.6 (3) |
N1—C1—C2 | 110.8 (2) | O2—C14—C13 | 121.2 (3) |
N2—C2—C3 | 123.4 (3) | N4—C14—C13 | 111.2 (2) |
N2—C2—C1 | 116.0 (2) | C16—C15—C20 | 119.9 (3) |
C3—C2—C1 | 120.6 (3) | C16—C15—N1 | 127.5 (3) |
C2—C3—C4 | 117.6 (3) | C20—C15—N1 | 112.5 (2) |
C2—C3—H3A | 121.2 | C17—C16—C15 | 119.0 (3) |
C4—C3—H3A | 121.2 | C17—C16—H16A | 120.5 |
C5—C4—C3 | 119.1 (3) | C15—C16—H16A | 120.5 |
C5—C4—H4A | 120.4 | C18—C17—C16 | 121.1 (3) |
C3—C4—H4A | 120.4 | C18—C17—H17A | 119.4 |
C4—C5—C6 | 121.0 (3) | C16—C17—H17A | 119.4 |
C4—C5—H5A | 119.5 | C17—C18—C19 | 120.8 (3) |
C6—C5—H5A | 119.5 | C17—C18—H18A | 119.6 |
N2—C6—C5 | 119.8 (3) | C19—C18—H18A | 119.6 |
N2—C6—C7 | 119.2 (3) | C18—C19—C20 | 118.5 (3) |
C5—C6—C7 | 120.9 (3) | C18—C19—H19A | 120.7 |
C6—C7—C8 | 115.3 (3) | C20—C19—H19A | 120.7 |
C6—C7—H7A | 108.5 | C19—C20—C15 | 120.6 (3) |
C8—C7—H7A | 108.5 | C19—C20—N4 | 127.0 (3) |
C6—C7—H7B | 108.5 | C15—C20—N4 | 112.4 (2) |
N4—Fe1—N1—C1 | −176.9 (2) | C2—N2—C6—C7 | −173.6 (3) |
N3—Fe1—N1—C1 | −140.5 (3) | Fe1—N2—C6—C7 | 16.6 (4) |
N2—Fe1—N1—C1 | −16.3 (2) | C4—C5—C6—N2 | −1.0 (5) |
Cl1—Fe1—N1—C1 | 75.9 (2) | C4—C5—C6—C7 | 175.9 (3) |
N4—Fe1—N1—C15 | 9.6 (2) | N2—C6—C7—C8 | −63.1 (4) |
N3—Fe1—N1—C15 | 46.0 (4) | C5—C6—C7—C8 | 119.9 (3) |
N2—Fe1—N1—C15 | 170.1 (2) | C6—C7—C8—C9 | 107.4 (3) |
Cl1—Fe1—N1—C15 | −97.6 (2) | C13—N3—C9—C10 | 1.6 (4) |
N1—Fe1—N2—C6 | −173.7 (3) | Fe1—N3—C9—C10 | 174.0 (2) |
N4—Fe1—N2—C6 | −121.4 (3) | C13—N3—C9—C8 | −178.2 (3) |
N3—Fe1—N2—C6 | −9.9 (3) | Fe1—N3—C9—C8 | −5.7 (4) |
Cl1—Fe1—N2—C6 | 85.0 (2) | C7—C8—C9—N3 | −62.5 (4) |
N1—Fe1—N2—C2 | 15.76 (19) | C7—C8—C9—C10 | 117.7 (3) |
N4—Fe1—N2—C2 | 68.1 (3) | N3—C9—C10—C11 | −1.8 (5) |
N3—Fe1—N2—C2 | 179.57 (18) | C8—C9—C10—C11 | 177.9 (3) |
Cl1—Fe1—N2—C2 | −85.53 (19) | C9—C10—C11—C12 | 0.7 (5) |
N1—Fe1—N3—C9 | 150.2 (3) | C10—C11—C12—C13 | 0.6 (5) |
N4—Fe1—N3—C9 | −173.5 (3) | C9—N3—C13—C12 | −0.3 (4) |
N2—Fe1—N3—C9 | 29.6 (3) | Fe1—N3—C13—C12 | −174.0 (2) |
Cl1—Fe1—N3—C9 | −65.4 (2) | C9—N3—C13—C14 | 178.4 (2) |
N1—Fe1—N3—C13 | −37.0 (4) | Fe1—N3—C13—C14 | 4.7 (3) |
N4—Fe1—N3—C13 | −0.60 (19) | C11—C12—C13—N3 | −0.8 (5) |
N2—Fe1—N3—C13 | −157.53 (18) | C11—C12—C13—C14 | −179.4 (3) |
Cl1—Fe1—N3—C13 | 107.44 (18) | C20—N4—C14—O2 | 1.6 (5) |
N1—Fe1—N4—C14 | 164.8 (2) | Fe1—N4—C14—O2 | −171.3 (3) |
N3—Fe1—N4—C14 | −4.1 (2) | C20—N4—C14—C13 | −179.7 (2) |
N2—Fe1—N4—C14 | 112.5 (3) | Fe1—N4—C14—C13 | 7.5 (3) |
Cl1—Fe1—N4—C14 | −95.4 (2) | N3—C13—C14—O2 | 171.0 (3) |
N1—Fe1—N4—C20 | −8.8 (2) | C12—C13—C14—O2 | −10.3 (4) |
N3—Fe1—N4—C20 | −177.7 (2) | N3—C13—C14—N4 | −7.8 (4) |
N2—Fe1—N4—C20 | −61.1 (3) | C12—C13—C14—N4 | 170.9 (3) |
Cl1—Fe1—N4—C20 | 91.03 (19) | C1—N1—C15—C16 | 1.3 (5) |
C15—N1—C1—O1 | 4.1 (6) | Fe1—N1—C15—C16 | 174.3 (3) |
Fe1—N1—C1—O1 | −168.8 (3) | C1—N1—C15—C20 | 178.5 (3) |
C15—N1—C1—C2 | −174.1 (3) | Fe1—N1—C15—C20 | −8.6 (3) |
Fe1—N1—C1—C2 | 13.1 (3) | C20—C15—C16—C17 | 1.3 (5) |
C6—N2—C2—C3 | −3.4 (4) | N1—C15—C16—C17 | 178.3 (3) |
Fe1—N2—C2—C3 | 168.4 (3) | C15—C16—C17—C18 | 0.7 (6) |
C6—N2—C2—C1 | 175.0 (3) | C16—C17—C18—C19 | −1.0 (6) |
Fe1—N2—C2—C1 | −13.2 (3) | C17—C18—C19—C20 | −0.8 (5) |
O1—C1—C2—N2 | −176.9 (3) | C18—C19—C20—C15 | 2.8 (5) |
N1—C1—C2—N2 | 1.3 (4) | C18—C19—C20—N4 | −179.2 (3) |
O1—C1—C2—C3 | 1.5 (5) | C16—C15—C20—C19 | −3.1 (5) |
N1—C1—C2—C3 | 179.8 (3) | N1—C15—C20—C19 | 179.5 (3) |
N2—C2—C3—C4 | 0.8 (5) | C16—C15—C20—N4 | 178.7 (3) |
C1—C2—C3—C4 | −177.5 (3) | N1—C15—C20—N4 | 1.3 (4) |
C2—C3—C4—C5 | 1.6 (5) | C14—N4—C20—C19 | 15.3 (5) |
C3—C4—C5—C6 | −1.5 (5) | Fe1—N4—C20—C19 | −171.7 (2) |
C2—N2—C6—C5 | 3.4 (4) | C14—N4—C20—C15 | −166.7 (3) |
Fe1—N2—C6—C5 | −166.4 (2) | Fe1—N4—C20—C15 | 6.4 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3A···Cl1i | 0.93 | 2.80 | 3.595 (4) | 144 |
C10—H10A···Cl1ii | 0.93 | 2.71 | 3.617 (3) | 165 |
C11—H11A···O1iii | 0.93 | 2.46 | 3.290 (5) | 149 |
Symmetry codes: (i) −x+1/2, y+1/2, −z+3/2; (ii) −x+3/2, y+1/2, −z+3/2; (iii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | [Fe(C20H14N4O2)Cl] |
Mr | 433.65 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 11.8532 (2), 8.2028 (1), 19.3507 (3) |
β (°) | 106.889 (1) |
V (Å3) | 1800.31 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.01 |
Crystal size (mm) | 0.44 × 0.16 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS, Sheldrick, 1996) |
Tmin, Tmax | 0.778, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 24687, 4142, 3415 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.126, 1.01 |
No. of reflections | 4142 |
No. of parameters | 253 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.62, −0.43 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Fe1—N1 | 1.871 (2) | Fe1—N2 | 2.032 (2) |
Fe1—N4 | 1.889 (2) | Fe1—Cl1 | 2.3080 (8) |
Fe1—N3 | 2.016 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3A···Cl1i | 0.93 | 2.80 | 3.595 (4) | 144 |
C10—H10A···Cl1ii | 0.93 | 2.71 | 3.617 (3) | 165 |
C11—H11A···O1iii | 0.93 | 2.46 | 3.290 (5) | 149 |
Symmetry codes: (i) −x+1/2, y+1/2, −z+3/2; (ii) −x+3/2, y+1/2, −z+3/2; (iii) x+1, y, z. |
Acknowledgements
The project was sponsored by the Foundation of Yibin University.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The chemistry of macrocyclic complexes has attracted the interest of both inorganic and bioinorganic chemists in recent years. Iron(III) complexes are involved in numerous biological redox reactions performed by metalloenzymes (Momenteau et al., 1994). As part of our studies on catalysis by N4 non-porphyrin complexes (Liu et al., 2006; Yang et al., 2007), we report here the crystal structure of a iron(III) complex with 1,2-[bis(6'-pyridine-2'-carboxamido)-ethane]benzene.
As shown in Fig.1, the complex has a five-coordinate structure with two pyridine and two deprotonated amide N atoms in the basal plane while the Cl ion is bonded to the FeIII center in the apical position. The geometry around the FeIII ion is approximately square-pyramidal. The Fe—N(amide) distances are shorter than the Fe—N(pyridine) distances (Table 1), both of which are shorter than the Fe—N distances found in the non-ring related Fe—N4 complexes such as [NEt4][Fe(bbpc)Cl2][H2bbpc is N,N'-(4,5-dichloro-o-phenylene)bis(4-tertbutylpyridine-2-carboxamide)] (Xu et al., 2007). The Fe—Cl distance of 2.3080 (8) Å is slightly shorter than that observed in [Fe(bbpc)Cl2](Et4N) (2.3299 (9) Å and 2.3880 (9) Å), while it is longer than that in [FeCl(meso-NH2-octaethylporphyrin)] (2.2596 (8) Å, Sankar et al., 2004).
In the crystalline state, the molecules are linked into a three-dimensional network by C—H···Cl and C—H···O hydrogen bonds (Table 2).