metal-organic compounds
Chlorido(2-iminomethyl-3-fluorophenyl-κ2C1,N)tris(trimethylphosphane-κP)iron
aSchool of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
*Correspondence e-mail: Xli63@sdu.edu.cn
The title compound, [Fe(C7H5FN)Cl(C3H9P)3], was obtained as a product of the reaction of [Fe(Me3P)4] with a molar equivalent of (2-chloro-6-fluorophenyl)methanimine in diethyl ether. This compound is sensitive to air, and rapidly decomposes when exposed to air for a few minutes. The Fe atom has an octahedral coordination geometry in which the bidentate fluorophenyl methanimine ligand forms the equatorial plane with the Cl atom and one of the trimethylphosphane ligands. The other two trimethylphosphane ligands are located in the axial positions. In the crystal, an N—H⋯Cl hydrogen bond occurs.
Related literature
For related literature regarding C—Cl bond activation, see: Wang et al. (2007); Wang & Love (2008); Shi et al. (2009). Related crystal structures of iron compounds have not yet been reported in the literature. For substituted phenylmethanimine coordinated dihydride complexes of osmium, see: Schloerer et al. (2006); Barea et al. (1998).
Experimental
Crystal data
|
Refinement
|
Data collection: APEX2 (Bruker, 2004); cell SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; 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/S1600536811015030/ez2239sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811015030/ez2239Isup2.hkl
A sample of Fe(PMe3)4 (0.50 g, 1.39 mmol) in 30 ml of diethyl ether was combined with a solution of (2-chloro-6-fluorophenyl)methanimine (0.22 g, 1.39 mmol) in diethyl ether (20 ml) at -80 °. The reaction mixture was warmed to ambient temperature and stirred for 24 h to form a red solution. The volatiles were removed in vacuo, and the resulting solid was extracted with pentane (40 ml). Crystallization at -15 ° afforded red crystals suitable for X-ray
(yield 0.40 g, 65%), dec. > 86 °.All H atoms on C were placed in calculated positions with a C—H bond distance of 0.93 or 0.96 Å and Uiso(H) = 1.2Ueq of the carrier atom.
Data collection: APEX2 (Bruker, 2004); cell
SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); 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. A view of the structure of (I), showing the atomic numbering scheme and 30% probability displacement ellipsoids. |
[Fe(C7H5FN)Cl(C3H9P)3] | F(000) = 928 |
Mr = 441.64 | Dx = 1.367 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P2ybc | Cell parameters from 5013 reflections |
a = 8.9879 (6) Å | θ = 2.5–27.5° |
b = 19.4457 (13) Å | µ = 1.06 mm−1 |
c = 13.5438 (7) Å | T = 298 K |
β = 114.937 (3)° | Block, red |
V = 2146.4 (2) Å3 | 0.20 × 0.18 × 0.15 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 4859 independent reflections |
Radiation source: fine-focus sealed tube | 4109 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −10→11 |
Tmin = 0.816, Tmax = 0.858 | k = −24→25 |
12499 measured reflections | l = −17→13 |
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)] = 0.029 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0334P)2 + 0.4204P] where P = (Fo2 + 2Fc2)/3 |
4859 reflections | (Δ/σ)max = 0.001 |
217 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
[Fe(C7H5FN)Cl(C3H9P)3] | V = 2146.4 (2) Å3 |
Mr = 441.64 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.9879 (6) Å | µ = 1.06 mm−1 |
b = 19.4457 (13) Å | T = 298 K |
c = 13.5438 (7) Å | 0.20 × 0.18 × 0.15 mm |
β = 114.937 (3)° |
Bruker APEXII CCD diffractometer | 4859 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 4109 reflections with I > 2σ(I) |
Tmin = 0.816, Tmax = 0.858 | Rint = 0.024 |
12499 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.37 e Å−3 |
4859 reflections | Δρmin = −0.23 e Å−3 |
217 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 F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 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 | ||
Fe | 0.02988 (3) | 0.391645 (11) | 0.325636 (18) | 0.01883 (7) | |
P3 | 0.25510 (6) | 0.35114 (2) | 0.46464 (4) | 0.02733 (11) | |
P2 | 0.14694 (5) | 0.39138 (2) | 0.20985 (4) | 0.02377 (11) | |
P1 | −0.19959 (5) | 0.44130 (2) | 0.20154 (4) | 0.02855 (11) | |
C1 | −0.0641 (2) | 0.29926 (8) | 0.29408 (13) | 0.0239 (3) | |
C6 | −0.1656 (2) | 0.28469 (9) | 0.34912 (13) | 0.0249 (4) | |
C5 | −0.2479 (2) | 0.22233 (10) | 0.33495 (15) | 0.0311 (4) | |
C4 | −0.2322 (2) | 0.17074 (10) | 0.27239 (15) | 0.0377 (5) | |
H4 | −0.2877 | 0.1293 | 0.2647 | 0.045* | |
C3 | −0.1304 (3) | 0.18198 (9) | 0.22048 (15) | 0.0372 (5) | |
H3 | −0.1154 | 0.1472 | 0.1784 | 0.045* | |
C2 | −0.0503 (2) | 0.24454 (9) | 0.23040 (15) | 0.0319 (4) | |
H2 | 0.0153 | 0.2505 | 0.1933 | 0.038* | |
N1 | −0.08235 (18) | 0.39126 (7) | 0.42146 (12) | 0.0272 (3) | |
H1 | −0.0735 | 0.4256 | 0.4636 | 0.033* | |
C7 | −0.1695 (2) | 0.33880 (9) | 0.42040 (14) | 0.0291 (4) | |
H7 | −0.2296 | 0.3360 | 0.4618 | 0.035* | |
C12 | 0.2364 (2) | 0.47338 (9) | 0.19708 (15) | 0.0320 (4) | |
H12A | 0.3218 | 0.4860 | 0.2663 | 0.048* | |
H12B | 0.1530 | 0.5082 | 0.1737 | 0.048* | |
H12C | 0.2816 | 0.4690 | 0.1445 | 0.048* | |
C13 | 0.0237 (3) | 0.37148 (12) | 0.06515 (15) | 0.0414 (5) | |
H13A | −0.0624 | 0.4048 | 0.0344 | 0.062* | |
H13B | −0.0233 | 0.3265 | 0.0587 | 0.062* | |
H13C | 0.0925 | 0.3728 | 0.0269 | 0.062* | |
C11 | 0.3211 (2) | 0.33487 (10) | 0.22908 (17) | 0.0375 (5) | |
H11A | 0.3555 | 0.3428 | 0.1719 | 0.056* | |
H11B | 0.2884 | 0.2877 | 0.2273 | 0.056* | |
H11C | 0.4105 | 0.3445 | 0.2981 | 0.056* | |
C8 | −0.1846 (3) | 0.51567 (12) | 0.1234 (2) | 0.0500 (6) | |
H8A | −0.2926 | 0.5328 | 0.0792 | 0.075* | |
H8B | −0.1322 | 0.5022 | 0.0776 | 0.075* | |
H8C | −0.1211 | 0.5511 | 0.1725 | 0.075* | |
C10 | −0.3503 (2) | 0.38749 (12) | 0.09655 (18) | 0.0475 (6) | |
H10A | −0.3822 | 0.3504 | 0.1302 | 0.071* | |
H10B | −0.3030 | 0.3692 | 0.0504 | 0.071* | |
H10C | −0.4449 | 0.4146 | 0.0538 | 0.071* | |
C9 | −0.3291 (3) | 0.47893 (11) | 0.2609 (2) | 0.0479 (6) | |
H9A | −0.4121 | 0.5070 | 0.2075 | 0.072* | |
H9B | −0.2632 | 0.5067 | 0.3224 | 0.072* | |
H9C | −0.3803 | 0.4429 | 0.2840 | 0.072* | |
C14 | 0.4433 (2) | 0.40139 (11) | 0.50640 (17) | 0.0441 (5) | |
H14A | 0.5319 | 0.3771 | 0.5623 | 0.066* | |
H14B | 0.4286 | 0.4451 | 0.5340 | 0.066* | |
H14C | 0.4684 | 0.4084 | 0.4449 | 0.066* | |
C15 | 0.3272 (3) | 0.26346 (10) | 0.46240 (18) | 0.0451 (5) | |
H15A | 0.3641 | 0.2595 | 0.4057 | 0.068* | |
H15B | 0.2391 | 0.2317 | 0.4491 | 0.068* | |
H15C | 0.4163 | 0.2532 | 0.5313 | 0.068* | |
C16 | 0.2353 (3) | 0.34609 (12) | 0.59360 (16) | 0.0458 (5) | |
H16A | 0.3393 | 0.3340 | 0.6511 | 0.069* | |
H16B | 0.1554 | 0.3117 | 0.5881 | 0.069* | |
H16C | 0.2008 | 0.3899 | 0.6092 | 0.069* | |
F | −0.34624 (14) | 0.21266 (6) | 0.38775 (10) | 0.0473 (3) | |
Cl1 | 0.11769 (5) | 0.50640 (2) | 0.39209 (4) | 0.02803 (10) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Fe | 0.02089 (13) | 0.01713 (12) | 0.02020 (13) | −0.00157 (9) | 0.01036 (10) | −0.00253 (9) |
P3 | 0.0284 (2) | 0.0237 (2) | 0.0260 (2) | −0.00102 (18) | 0.00766 (19) | 0.00456 (18) |
P2 | 0.0242 (2) | 0.0271 (2) | 0.0231 (2) | −0.00228 (18) | 0.01291 (18) | −0.00302 (17) |
P1 | 0.0204 (2) | 0.0289 (2) | 0.0338 (3) | 0.00095 (18) | 0.00892 (19) | 0.00162 (19) |
C1 | 0.0254 (8) | 0.0222 (8) | 0.0227 (8) | −0.0012 (7) | 0.0089 (7) | −0.0011 (7) |
C6 | 0.0263 (9) | 0.0237 (8) | 0.0238 (8) | −0.0022 (7) | 0.0096 (7) | 0.0012 (7) |
C5 | 0.0281 (9) | 0.0313 (10) | 0.0288 (9) | −0.0073 (8) | 0.0069 (8) | 0.0074 (8) |
C4 | 0.0423 (11) | 0.0239 (9) | 0.0336 (10) | −0.0110 (8) | 0.0031 (9) | 0.0016 (8) |
C3 | 0.0509 (12) | 0.0219 (9) | 0.0315 (10) | −0.0031 (8) | 0.0103 (9) | −0.0076 (8) |
C2 | 0.0395 (10) | 0.0256 (9) | 0.0329 (10) | −0.0050 (8) | 0.0175 (8) | −0.0085 (8) |
N1 | 0.0347 (8) | 0.0233 (7) | 0.0299 (8) | −0.0039 (6) | 0.0198 (7) | −0.0072 (6) |
C7 | 0.0325 (10) | 0.0324 (10) | 0.0290 (9) | −0.0031 (8) | 0.0194 (8) | −0.0001 (8) |
C12 | 0.0320 (10) | 0.0350 (10) | 0.0337 (10) | −0.0038 (8) | 0.0184 (8) | 0.0030 (8) |
C13 | 0.0455 (12) | 0.0559 (13) | 0.0254 (10) | −0.0109 (10) | 0.0174 (9) | −0.0086 (9) |
C11 | 0.0375 (11) | 0.0365 (11) | 0.0479 (12) | 0.0022 (9) | 0.0273 (10) | −0.0050 (9) |
C8 | 0.0326 (11) | 0.0499 (13) | 0.0586 (14) | 0.0082 (10) | 0.0106 (10) | 0.0259 (11) |
C10 | 0.0277 (10) | 0.0572 (14) | 0.0437 (13) | −0.0041 (10) | 0.0015 (9) | −0.0069 (10) |
C9 | 0.0316 (11) | 0.0448 (12) | 0.0696 (16) | 0.0098 (9) | 0.0235 (11) | −0.0042 (11) |
C14 | 0.0296 (10) | 0.0465 (12) | 0.0406 (12) | −0.0066 (9) | −0.0004 (9) | 0.0105 (10) |
C15 | 0.0475 (12) | 0.0315 (11) | 0.0546 (13) | 0.0139 (9) | 0.0197 (11) | 0.0145 (10) |
C16 | 0.0600 (14) | 0.0450 (12) | 0.0273 (10) | −0.0034 (11) | 0.0135 (10) | 0.0072 (9) |
F | 0.0466 (7) | 0.0466 (7) | 0.0524 (7) | −0.0150 (6) | 0.0245 (6) | 0.0088 (6) |
Cl1 | 0.0366 (2) | 0.01904 (19) | 0.0327 (2) | −0.00468 (17) | 0.01878 (19) | −0.00525 (17) |
Fe—N1 | 1.9508 (14) | C7—H7 | 0.9300 |
Fe—C1 | 1.9544 (16) | C12—H12A | 0.9600 |
Fe—P2 | 2.2265 (5) | C12—H12B | 0.9600 |
Fe—P3 | 2.2470 (5) | C12—H12C | 0.9600 |
Fe—P1 | 2.2556 (5) | C13—H13A | 0.9600 |
Fe—Cl1 | 2.4111 (5) | C13—H13B | 0.9600 |
P3—C14 | 1.825 (2) | C13—H13C | 0.9600 |
P3—C15 | 1.829 (2) | C11—H11A | 0.9600 |
P3—C16 | 1.832 (2) | C11—H11B | 0.9600 |
P2—C12 | 1.8268 (18) | C11—H11C | 0.9600 |
P2—C11 | 1.8393 (19) | C8—H8A | 0.9600 |
P2—C13 | 1.8404 (19) | C8—H8B | 0.9600 |
P1—C10 | 1.824 (2) | C8—H8C | 0.9600 |
P1—C9 | 1.824 (2) | C10—H10A | 0.9600 |
P1—C8 | 1.830 (2) | C10—H10B | 0.9600 |
C1—C2 | 1.408 (2) | C10—H10C | 0.9600 |
C1—C6 | 1.429 (2) | C9—H9A | 0.9600 |
C6—C5 | 1.391 (2) | C9—H9B | 0.9600 |
C6—C7 | 1.439 (2) | C9—H9C | 0.9600 |
C5—C4 | 1.359 (3) | C14—H14A | 0.9600 |
C5—F | 1.364 (2) | C14—H14B | 0.9600 |
C4—C3 | 1.386 (3) | C14—H14C | 0.9600 |
C4—H4 | 0.9300 | C15—H15A | 0.9600 |
C3—C2 | 1.391 (3) | C15—H15B | 0.9600 |
C3—H3 | 0.9300 | C15—H15C | 0.9600 |
C2—H2 | 0.9300 | C16—H16A | 0.9600 |
N1—C7 | 1.283 (2) | C16—H16B | 0.9600 |
N1—H1 | 0.8600 | C16—H16C | 0.9600 |
N1—Fe—C1 | 81.08 (7) | C6—C7—H7 | 123.2 |
N1—Fe—P2 | 177.39 (5) | P2—C12—H12A | 109.5 |
C1—Fe—P2 | 97.64 (5) | P2—C12—H12B | 109.5 |
N1—Fe—P3 | 88.69 (5) | H12A—C12—H12B | 109.5 |
C1—Fe—P3 | 90.84 (5) | P2—C12—H12C | 109.5 |
P2—Fe—P3 | 93.61 (2) | H12A—C12—H12C | 109.5 |
N1—Fe—P1 | 86.02 (5) | H12B—C12—H12C | 109.5 |
C1—Fe—P1 | 93.18 (5) | P2—C13—H13A | 109.5 |
P2—Fe—P1 | 91.794 (19) | P2—C13—H13B | 109.5 |
P3—Fe—P1 | 172.79 (2) | H13A—C13—H13B | 109.5 |
N1—Fe—Cl1 | 86.27 (4) | P2—C13—H13C | 109.5 |
C1—Fe—Cl1 | 167.34 (5) | H13A—C13—H13C | 109.5 |
P2—Fe—Cl1 | 95.022 (17) | H13B—C13—H13C | 109.5 |
P3—Fe—Cl1 | 88.522 (18) | P2—C11—H11A | 109.5 |
P1—Fe—Cl1 | 86.246 (18) | P2—C11—H11B | 109.5 |
C14—P3—C15 | 102.46 (10) | H11A—C11—H11B | 109.5 |
C14—P3—C16 | 100.56 (11) | P2—C11—H11C | 109.5 |
C15—P3—C16 | 98.25 (10) | H11A—C11—H11C | 109.5 |
C14—P3—Fe | 117.51 (7) | H11B—C11—H11C | 109.5 |
C15—P3—Fe | 120.89 (7) | P1—C8—H8A | 109.5 |
C16—P3—Fe | 113.72 (8) | P1—C8—H8B | 109.5 |
C12—P2—C11 | 98.76 (9) | H8A—C8—H8B | 109.5 |
C12—P2—C13 | 100.02 (9) | P1—C8—H8C | 109.5 |
C11—P2—C13 | 96.86 (10) | H8A—C8—H8C | 109.5 |
C12—P2—Fe | 114.99 (6) | H8B—C8—H8C | 109.5 |
C11—P2—Fe | 121.91 (7) | P1—C10—H10A | 109.5 |
C13—P2—Fe | 119.97 (7) | P1—C10—H10B | 109.5 |
C10—P1—C9 | 99.88 (11) | H10A—C10—H10B | 109.5 |
C10—P1—C8 | 102.37 (11) | P1—C10—H10C | 109.5 |
C9—P1—C8 | 98.87 (11) | H10A—C10—H10C | 109.5 |
C10—P1—Fe | 118.72 (8) | H10B—C10—H10C | 109.5 |
C9—P1—Fe | 113.34 (8) | P1—C9—H9A | 109.5 |
C8—P1—Fe | 120.13 (7) | P1—C9—H9B | 109.5 |
C2—C1—C6 | 114.22 (15) | H9A—C9—H9B | 109.5 |
C2—C1—Fe | 133.41 (14) | P1—C9—H9C | 109.5 |
C6—C1—Fe | 112.36 (12) | H9A—C9—H9C | 109.5 |
C5—C6—C1 | 121.36 (16) | H9B—C9—H9C | 109.5 |
C5—C6—C7 | 124.61 (16) | P3—C14—H14A | 109.5 |
C1—C6—C7 | 114.01 (15) | P3—C14—H14B | 109.5 |
C4—C5—F | 119.09 (16) | H14A—C14—H14B | 109.5 |
C4—C5—C6 | 122.71 (18) | P3—C14—H14C | 109.5 |
F—C5—C6 | 118.19 (17) | H14A—C14—H14C | 109.5 |
C5—C4—C3 | 117.68 (17) | H14B—C14—H14C | 109.5 |
C5—C4—H4 | 121.2 | P3—C15—H15A | 109.5 |
C3—C4—H4 | 121.2 | P3—C15—H15B | 109.5 |
C4—C3—C2 | 120.94 (18) | H15A—C15—H15B | 109.5 |
C4—C3—H3 | 119.5 | P3—C15—H15C | 109.5 |
C2—C3—H3 | 119.5 | H15A—C15—H15C | 109.5 |
C3—C2—C1 | 123.01 (18) | H15B—C15—H15C | 109.5 |
C3—C2—H2 | 118.5 | P3—C16—H16A | 109.5 |
C1—C2—H2 | 118.5 | P3—C16—H16B | 109.5 |
C7—N1—Fe | 118.71 (12) | H16A—C16—H16B | 109.5 |
C7—N1—H1 | 120.6 | P3—C16—H16C | 109.5 |
Fe—N1—H1 | 120.6 | H16A—C16—H16C | 109.5 |
N1—C7—C6 | 113.67 (15) | H16B—C16—H16C | 109.5 |
N1—C7—H7 | 123.2 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Cl1i | 0.86 | 2.53 | 3.3339 (15) | 157 |
Symmetry code: (i) −x, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Fe(C7H5FN)Cl(C3H9P)3] |
Mr | 441.64 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 8.9879 (6), 19.4457 (13), 13.5438 (7) |
β (°) | 114.937 (3) |
V (Å3) | 2146.4 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.06 |
Crystal size (mm) | 0.20 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.816, 0.858 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12499, 4859, 4109 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.651 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.071, 1.04 |
No. of reflections | 4859 |
No. of parameters | 217 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.37, −0.23 |
Computer programs: APEX2 (Bruker, 2004), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Cl1i | 0.86 | 2.53 | 3.3339 (15) | 156.8 |
Symmetry code: (i) −x, −y+1, −z+1. |
Acknowledgements
The authors gratefully acknowledge support by the NSF China, grant Nos. 20872080/20772072, and the Science Foundation of Shandong Province, grant Nos. Y2007B06/Y2006B18.
References
Barea, G., Esteruelas, M. A., Lledos, A., Lopez, A., Onate, E. & Tolosa, J. I. (1998). Organometallics, 17, 4065–4076. CrossRef CAS Google Scholar
Bruker (2001). SAINT-Plus and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2004). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Schloerer, N., Pons, V., Gusev, D. G. & Heinekey, D. M. (2006). Organometallics, 25, 3481–3485. CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shi, Y., Li, M., Hu, Q., Li, X. & Sun, H. (2009). Organometallics, 28, 2206–2210. CrossRef CAS Google Scholar
Wang, T., Alfonso, B. J. & Love, J. A. (2007). Org. Lett. 9, 5629–5631. Web of Science CrossRef PubMed CAS Google Scholar
Wang, T. & Love, J. A. (2008). Organometallics, 27, 3290–3296. CrossRef CAS Google Scholar
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.
C-Cl bond activation and C-C coupling reactions are of great interest, with much focus on ortho-substitued imines (Wang et al., 2007; Wang & Love, 2008), where Pt complexes have been used to catalyze the cross coupling of imines and dimethylzinc reagents through C-X bond activation. We have previously shown that the iron complexes supported by trimethylphosphine can easily activate the C-X (X=Cl,F) bond (Shi et al., 2009).
Reaction of the low valent complex of Fe(PMe3)4 with (2-chloro-6-fluorophenyl)methanimine afforded the title compound. The ortho C—Cl bond was selectively activated due to its energy being lower than the C—F bond. The coordination of the imine group and one of the C atoms led to the formation of a five membered chelate ring which can provide enough energy to actiatve the C—Cl bond. It indicates that with the assistance of the imine group iron(0) complexes can easily activate the C—Cl bond affording iron(II) chloride complexes. Subsequently, C—C coupling reactions with organometallic reagents may occur.
In the title molecule (Fig. 1) the iron atom lies in an octahedral geometry in which atoms C1, N1, Cl1 and P2 form the basal plane with P1 and P3 in the axial positions. The two axial groups are located in a distorted linear geometry. A five-membered chelate ring is formed by C1, C6, C7, N1 and Fe. The bite angle of N1—Fe—C1 is 81.08 (7)°. The sum of internal bond angles (360.0 °) of N1—Fe—C1, C1—Fe—P2, P2—Fe—Cl1 and Cl1—Fe—N1 indicates nearly perfect planarity. The N—H···Cl interaction is rather short (2.53 Å). The probable reason is the steric effect of atom P2 which forces the Cl1 atom closer to the H1 atom. The C1—Fe—Cl1 angle is 167.34 (5)°, while the N1—Fe—Cl1 angle (86.27 (4)°) is less than 90°. Related structures of Os complexes containing the same iminomethyl ligand have been reported in the literature (Barea et al., 1998; Schloerer et al., 2006), although one molecule of hydrogen occupies the position trans to the nitrogen atom instead of one of the trimethylphosphine ligands. In this structure the N—Os—Cl angle is also less than 90°, and also contains a similar short N—H···Cl interaction.