metal-organic compounds
Bis[2-(8-quinolyliminomethyl)phenolato-κ3N,N′,O]iron(III) azide
aDepartment of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan, bDepartment of Chemistry, Faculty of Science, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan, cDepartment of Chemistry and Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan, and dDepartment of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
*Correspondence e-mail: hayami@sci.kumamoto-u.ac.jp
The title compound, [Fe(C16H11N2O)2]N3, consists of a [Fe(qsal)2]+ cation [Hqsal = N-(8-quinolyl)salicylaldimine] and an azide anion. The FeIII ion, lying on a twofold rotation axis, is coordinated by four N atoms and two O atoms from two tridentate qsal ligands in an octahedral geometry. The molecules are connected into a three-dimensional network by intermolecular C—H⋯N and C—H⋯O interactions. π–π interactions [interplanar distance = 3.58 (1) Å] between the quinoline rings of adjacent molecules further stabilize the crystal structure.
Related literature
For Fe(III) complexes with qsal ligands, see: Hayami et al. (2001); Takahashi et al. (2006). For bond lengths in Fe(III) complexes, see: Nihei et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: PROCESS-AUTO (Rigaku, 1998); cell PROCESS-AUTO; data reduction: CrystalClear (Rigaku, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Yadokari-XG (Wakita, 2000); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810002783/hy2271sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810002783/hy2271Isup2.hkl
Hqsal and [Fe(qsal)2]Cl were prepared from 8-aminoquinoline and salicylaldehyde according to the method described previously (Hayami et al., 2001). The title compound was prepared by slow addition of a MeOH solution (30 ml) containing [Fe(qsal)2]Cl (0.5 mmol) to a MeOH solution (30 ml) containing an excess of NaN3 (2 mmol).
All H atoms were positioned geometrically (C—H = 0.95 Å) and refined as riding atoms, with Uiso(H) = 1.2Ueq(C).
Fe(III) complexes with the qsal ligands [Hqsal = N-(8-quinolyl)salicylaldimine] were reported previously (Hayami et al., 2001; Takahashi et al., 2006). It was showed that the spin states of the complexes can be tuned by the different counter anions. Some of the complexes were observed spin crossover or spin transition. The title compound (Fig. 1) does not show both spin-crossover behaviors but is in the low-spin state at room temperature. In the complex, Fe1—O1, Fe1—N1 and Fe1—N2 bond lengths (Table 1) are close to those for other low-spin Fe(III) complexes (Nihei et al., 2007).
In addition, many intermolecular interactions are observed in the π–π interaction [interplanar distance = 3.58 (1) Å] between the quinoline rings of adjacent molecules link the molecules and provide stability into the crystal structure.
The intermolecular C—H···N hydrogen bond (involving quinoline ring H15 and the azide N4), C—H···O hydrogen bond (involving quinoline ring H9 and phenolate O1) (Table 2), andFor Fe(III) complexes with qsal ligands, see: Hayami et al. (2001); Takahashi et al. (2006). For bond lengths in Fe(III) complexes, see: Nihei et al. (2007).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell
PROCESS-AUTO (Rigaku, 1998); data reduction: CrystalClear (Rigaku, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Yadokari-XG (Wakita, 2000); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound drawn with the 50% probability displacement ellipsoids. [Symmetry codes: (i) 1/2-x, y, 3/2-z; (ii) 1/2-x, y, 5/2-z.] |
[Fe(C16H11N2O)2]N3 | F(000) = 610 |
Mr = 592.42 | Dx = 1.539 Mg m−3 |
Monoclinic, P2/n | Mo Kα radiation, λ = 0.71069 Å |
Hall symbol: -P 2yac | Cell parameters from 11530 reflections |
a = 11.3717 (8) Å | θ = 1.8–27.5° |
b = 10.1190 (8) Å | µ = 0.64 mm−1 |
c = 11.7734 (6) Å | T = 200 K |
β = 109.3542 (15)° | Block, black |
V = 1278.21 (15) Å3 | 0.50 × 0.20 × 0.20 mm |
Z = 2 |
Rigaku R-AXIS RAPID diffractometer | 2929 independent reflections |
Radiation source: rotation anode | 2556 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ω scans | θmax = 27.5°, θmin = 2.0° |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | h = 0→14 |
Tmin = 0.741, Tmax = 0.883 | k = 0→13 |
11530 measured reflections | l = −15→14 |
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)] = 0.031 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.104 | H-atom parameters constrained |
S = 0.86 | w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3 |
2929 reflections | (Δ/σ)max < 0.001 |
191 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.39 e Å−3 |
[Fe(C16H11N2O)2]N3 | V = 1278.21 (15) Å3 |
Mr = 592.42 | Z = 2 |
Monoclinic, P2/n | Mo Kα radiation |
a = 11.3717 (8) Å | µ = 0.64 mm−1 |
b = 10.1190 (8) Å | T = 200 K |
c = 11.7734 (6) Å | 0.50 × 0.20 × 0.20 mm |
β = 109.3542 (15)° |
Rigaku R-AXIS RAPID diffractometer | 2929 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 2556 reflections with I > 2σ(I) |
Tmin = 0.741, Tmax = 0.883 | Rint = 0.026 |
11530 measured reflections |
R[F2 > 2σ(F2)] = 0.031 | 0 restraints |
wR(F2) = 0.104 | H-atom parameters constrained |
S = 0.86 | Δρmax = 0.34 e Å−3 |
2929 reflections | Δρmin = −0.39 e Å−3 |
191 parameters |
x | y | z | Uiso*/Ueq | ||
Fe1 | 0.2500 | 0.12760 (3) | 0.7500 | 0.01593 (12) | |
O1 | 0.13778 (10) | 0.00441 (11) | 0.77255 (10) | 0.0230 (2) | |
N1 | 0.35553 (12) | 0.13158 (12) | 0.91699 (11) | 0.0181 (3) | |
N2 | 0.36114 (11) | 0.27008 (12) | 0.73375 (11) | 0.0184 (3) | |
N3 | 0.2500 | 0.28128 (19) | 1.2500 | 0.0279 (4) | |
N4 | 0.26580 (17) | 0.28132 (18) | 1.15630 (15) | 0.0433 (4) | |
C1 | 0.14342 (14) | −0.05156 (14) | 0.87550 (13) | 0.0211 (3) | |
C2 | 0.04475 (17) | −0.13609 (16) | 0.87415 (16) | 0.0286 (4) | |
H2 | −0.0224 | −0.1491 | 0.8012 | 0.034* | |
C3 | 0.04411 (18) | −0.20050 (19) | 0.97754 (16) | 0.0352 (4) | |
H3 | −0.0236 | −0.2569 | 0.9745 | 0.042* | |
C4 | 0.1411 (2) | −0.1841 (2) | 1.08613 (16) | 0.0395 (5) | |
H4 | 0.1409 | −0.2307 | 1.1561 | 0.047* | |
C5 | 0.23689 (18) | −0.09964 (19) | 1.09040 (15) | 0.0321 (4) | |
H5 | 0.3022 | −0.0865 | 1.1646 | 0.038* | |
C6 | 0.24043 (15) | −0.03176 (15) | 0.98671 (14) | 0.0230 (3) | |
C7 | 0.34174 (14) | 0.05762 (15) | 1.00231 (13) | 0.0218 (3) | |
H7 | 0.4031 | 0.0636 | 1.0799 | 0.026* | |
C8 | 0.45447 (14) | 0.22483 (14) | 0.94235 (13) | 0.0207 (3) | |
C9 | 0.54613 (16) | 0.24933 (17) | 1.05052 (15) | 0.0293 (4) | |
H9 | 0.5493 | 0.1992 | 1.1197 | 0.035* | |
C10 | 0.63516 (17) | 0.3487 (2) | 1.05877 (17) | 0.0355 (4) | |
H10 | 0.6988 | 0.3639 | 1.1337 | 0.043* | |
C11 | 0.63210 (16) | 0.42458 (18) | 0.96008 (16) | 0.0323 (4) | |
H11 | 0.6924 | 0.4920 | 0.9679 | 0.039* | |
C12 | 0.53937 (15) | 0.40166 (16) | 0.84810 (15) | 0.0252 (3) | |
C13 | 0.52736 (15) | 0.47520 (17) | 0.74226 (16) | 0.0291 (4) | |
H13 | 0.5829 | 0.5460 | 0.7443 | 0.035* | |
C14 | 0.43587 (15) | 0.44350 (16) | 0.63807 (15) | 0.0272 (3) | |
H14 | 0.4270 | 0.4925 | 0.5669 | 0.033* | |
C15 | 0.35431 (14) | 0.33827 (16) | 0.63543 (14) | 0.0221 (3) | |
H15 | 0.2926 | 0.3153 | 0.5613 | 0.027* | |
C16 | 0.45197 (13) | 0.30040 (15) | 0.83972 (13) | 0.0194 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Fe1 | 0.01757 (17) | 0.01657 (17) | 0.01266 (17) | 0.000 | 0.00365 (11) | 0.000 |
O1 | 0.0252 (5) | 0.0240 (5) | 0.0169 (5) | −0.0063 (4) | 0.0032 (4) | 0.0021 (4) |
N1 | 0.0187 (6) | 0.0199 (6) | 0.0149 (6) | 0.0007 (4) | 0.0045 (5) | −0.0004 (4) |
N2 | 0.0174 (5) | 0.0205 (6) | 0.0174 (6) | 0.0000 (5) | 0.0059 (5) | 0.0001 (4) |
N3 | 0.0242 (9) | 0.0256 (10) | 0.0281 (10) | 0.000 | 0.0009 (8) | 0.000 |
N4 | 0.0472 (10) | 0.0516 (10) | 0.0297 (9) | −0.0174 (8) | 0.0110 (7) | −0.0039 (7) |
C1 | 0.0265 (7) | 0.0198 (7) | 0.0175 (7) | −0.0006 (6) | 0.0079 (6) | 0.0011 (5) |
C2 | 0.0292 (8) | 0.0309 (9) | 0.0244 (8) | −0.0087 (7) | 0.0071 (7) | 0.0009 (6) |
C3 | 0.0408 (10) | 0.0377 (9) | 0.0293 (9) | −0.0159 (8) | 0.0147 (8) | 0.0011 (7) |
C4 | 0.0536 (11) | 0.0434 (11) | 0.0224 (8) | −0.0161 (9) | 0.0138 (8) | 0.0049 (7) |
C5 | 0.0408 (10) | 0.0356 (9) | 0.0166 (8) | −0.0079 (8) | 0.0052 (7) | 0.0038 (6) |
C6 | 0.0286 (8) | 0.0216 (7) | 0.0188 (7) | −0.0012 (6) | 0.0080 (6) | 0.0010 (6) |
C7 | 0.0247 (7) | 0.0223 (7) | 0.0155 (7) | 0.0008 (6) | 0.0027 (6) | 0.0006 (5) |
C8 | 0.0195 (6) | 0.0215 (7) | 0.0199 (7) | −0.0003 (5) | 0.0049 (5) | −0.0024 (5) |
C9 | 0.0290 (8) | 0.0341 (9) | 0.0215 (8) | −0.0055 (7) | 0.0039 (6) | −0.0012 (6) |
C10 | 0.0284 (9) | 0.0451 (10) | 0.0254 (9) | −0.0118 (8) | −0.0012 (7) | −0.0045 (7) |
C11 | 0.0282 (8) | 0.0346 (9) | 0.0315 (9) | −0.0123 (7) | 0.0064 (7) | −0.0049 (7) |
C12 | 0.0217 (7) | 0.0249 (8) | 0.0288 (9) | −0.0027 (6) | 0.0080 (6) | −0.0026 (6) |
C13 | 0.0280 (8) | 0.0266 (8) | 0.0346 (9) | −0.0066 (7) | 0.0129 (7) | 0.0012 (7) |
C14 | 0.0283 (8) | 0.0263 (8) | 0.0295 (8) | −0.0013 (6) | 0.0128 (7) | 0.0066 (6) |
C15 | 0.0204 (7) | 0.0248 (7) | 0.0213 (7) | 0.0005 (6) | 0.0071 (6) | 0.0035 (6) |
C16 | 0.0172 (6) | 0.0203 (7) | 0.0202 (7) | −0.0001 (5) | 0.0054 (5) | −0.0020 (5) |
Fe1—O1 | 1.8648 (11) | C5—H5 | 0.9500 |
Fe1—N1 | 1.9347 (13) | C6—C7 | 1.428 (2) |
Fe1—N2 | 1.9680 (12) | C7—H7 | 0.9500 |
O1—C1 | 1.3201 (17) | C8—C9 | 1.375 (2) |
N1—C7 | 1.3031 (19) | C8—C16 | 1.422 (2) |
N1—C8 | 1.4222 (19) | C9—C10 | 1.407 (2) |
N2—C15 | 1.3276 (19) | C9—H9 | 0.9500 |
N2—C16 | 1.3650 (18) | C10—C11 | 1.384 (3) |
N3—N4 | 1.1750 (17) | C10—H10 | 0.9500 |
N3—N4i | 1.1750 (17) | C11—C12 | 1.408 (2) |
C1—C2 | 1.407 (2) | C11—H11 | 0.9500 |
C1—C6 | 1.419 (2) | C12—C13 | 1.418 (2) |
C2—C3 | 1.383 (2) | C12—C16 | 1.408 (2) |
C2—H2 | 0.9500 | C13—H13 | 0.9500 |
C3—H3 | 0.9500 | C14—C13 | 1.358 (2) |
C4—C3 | 1.394 (3) | C15—C14 | 1.406 (2) |
C4—C5 | 1.372 (3) | C14—H14 | 0.9500 |
C4—H4 | 0.9500 | C15—H15 | 0.9500 |
C5—C6 | 1.413 (2) | ||
O1—Fe1—O1ii | 96.10 (7) | C4—C5—H5 | 119.3 |
O1—Fe1—N1 | 95.31 (5) | C6—C5—H5 | 119.3 |
O1—Fe1—N1ii | 86.29 (5) | C1—C6—C5 | 119.50 (14) |
O1ii—Fe1—N1 | 86.29 (5) | C1—C6—C7 | 123.74 (14) |
O1ii—Fe1—N1ii | 95.31 (5) | C5—C6—C7 | 116.72 (14) |
O1—Fe1—N2 | 174.51 (5) | N1—C7—C6 | 124.24 (14) |
O1—Fe1—N2ii | 89.09 (5) | N1—C7—H7 | 117.9 |
O1ii—Fe1—N2 | 89.09 (5) | C6—C7—H7 | 117.9 |
O1ii—Fe1—N2ii | 174.51 (5) | N1—C8—C9 | 128.20 (14) |
N1ii—Fe1—N1 | 177.62 (7) | N1—C8—C16 | 112.74 (13) |
N1—Fe1—N2 | 83.19 (5) | C9—C8—C16 | 119.05 (14) |
N1—Fe1—N2ii | 95.05 (5) | C8—C9—C10 | 120.01 (16) |
N1ii—Fe1—N2 | 95.05 (5) | C8—C9—H9 | 120.0 |
N1ii—Fe1—N2ii | 83.19 (5) | C10—C9—H9 | 120.0 |
N2ii—Fe1—N2 | 85.79 (7) | C9—C10—C11 | 121.43 (16) |
Fe1—O1—C1 | 126.18 (10) | C9—C10—H10 | 119.3 |
Fe1—N1—C7 | 125.36 (11) | C11—C10—H10 | 119.3 |
Fe1—N1—C8 | 114.10 (10) | C10—C11—C12 | 119.83 (16) |
C7—N1—C8 | 120.54 (13) | C10—C11—H11 | 120.1 |
Fe1—N2—C15 | 127.71 (10) | C12—C11—H11 | 120.1 |
Fe1—N2—C16 | 113.05 (9) | C11—C12—C13 | 124.08 (16) |
C15—N2—C16 | 119.21 (13) | C11—C12—C16 | 118.54 (15) |
N4—N3—N4i | 180.0 (3) | C13—C12—C16 | 117.39 (15) |
O1—C1—C2 | 117.04 (14) | C12—C13—C14 | 119.44 (15) |
O1—C1—C6 | 124.95 (14) | C14—C13—H13 | 120.3 |
C2—C1—C6 | 118.00 (14) | C12—C13—H13 | 120.3 |
C1—C2—C3 | 120.89 (16) | C13—C14—C15 | 120.09 (15) |
C1—C2—H2 | 119.6 | C13—C14—H14 | 120.0 |
C3—C2—H2 | 119.6 | C15—C14—H14 | 120.0 |
C2—C3—C4 | 121.17 (16) | N2—C15—C14 | 121.80 (14) |
C2—C3—H3 | 119.4 | N2—C15—H15 | 119.1 |
C4—C3—H3 | 119.4 | C14—C15—H15 | 119.1 |
C3—C4—C5 | 119.02 (16) | N2—C16—C12 | 122.03 (14) |
C5—C4—H4 | 120.5 | N2—C16—C8 | 116.85 (13) |
C3—C4—H4 | 120.5 | C8—C16—C12 | 121.12 (14) |
C4—C5—C6 | 121.37 (16) | ||
O1ii—Fe1—O1—C1 | 86.71 (12) | C15—N2—C16—C12 | −0.3 (2) |
N1—Fe1—O1—C1 | −0.11 (13) | O1—C1—C2—C3 | 178.95 (16) |
N1ii—Fe1—O1—C1 | −178.34 (13) | C6—C1—C2—C3 | −1.6 (3) |
O1—Fe1—N1—C7 | 3.95 (13) | O1—C1—C6—C5 | −178.78 (16) |
O1ii—Fe1—N1—C7 | −91.84 (13) | O1—C1—C6—C7 | 3.5 (2) |
O1—Fe1—N1—C8 | −176.17 (10) | C2—C1—C6—C5 | 1.9 (2) |
O1ii—Fe1—N1—C8 | 88.04 (10) | C2—C1—C6—C7 | −175.91 (15) |
N2—Fe1—N1—C7 | 178.64 (13) | C1—C2—C3—C4 | −0.2 (3) |
N2ii—Fe1—N1—C7 | 93.51 (13) | C2—C3—C4—C5 | 1.7 (3) |
N2—Fe1—N1—C8 | −1.49 (10) | C3—C4—C5—C6 | −1.5 (3) |
N2ii—Fe1—N1—C8 | −86.62 (10) | C4—C5—C6—C1 | −0.3 (3) |
O1ii—Fe1—N2—C15 | 95.66 (13) | C4—C5—C6—C7 | 177.60 (17) |
N1—Fe1—N2—C15 | −177.97 (13) | C1—C6—C7—N1 | 0.8 (2) |
N1ii—Fe1—N2—C15 | 0.41 (13) | C5—C6—C7—N1 | −177.02 (15) |
N2ii—Fe1—N2—C15 | −82.36 (13) | N1—C8—C9—C10 | −178.44 (16) |
O1ii—Fe1—N2—C16 | −86.28 (10) | C16—C8—C9—C10 | 0.5 (2) |
N1—Fe1—N2—C16 | 0.09 (10) | N1—C8—C16—N2 | −2.56 (19) |
N1ii—Fe1—N2—C16 | 178.47 (10) | N1—C8—C16—C12 | 177.32 (13) |
N2ii—Fe1—N2—C16 | 95.70 (11) | C9—C8—C16—N2 | 178.36 (14) |
Fe1—O1—C1—C2 | 176.17 (11) | C9—C8—C16—C12 | −1.8 (2) |
Fe1—O1—C1—C6 | −3.2 (2) | C8—C9—C10—C11 | 0.8 (3) |
Fe1—N1—C7—C6 | −4.7 (2) | C9—C10—C11—C12 | −0.9 (3) |
C8—N1—C7—C6 | 175.48 (14) | C10—C11—C12—C13 | 179.10 (17) |
Fe1—N1—C8—C9 | −178.46 (14) | C10—C11—C12—C16 | −0.4 (3) |
Fe1—N1—C8—C16 | 2.56 (16) | C11—C12—C13—C14 | 178.80 (17) |
C7—N1—C8—C9 | 1.4 (2) | C16—C12—C13—C14 | −1.7 (2) |
C7—N1—C8—C16 | −177.56 (13) | C11—C12—C16—N2 | −178.43 (15) |
Fe1—N2—C15—C14 | 176.08 (11) | C11—C12—C16—C8 | 1.7 (2) |
C16—N2—C15—C14 | −1.9 (2) | C13—C12—C16—N2 | 2.1 (2) |
Fe1—N2—C16—C8 | 1.35 (16) | C13—C12—C16—C8 | −177.80 (14) |
Fe1—N2—C16—C12 | −178.52 (11) | C12—C13—C14—C15 | −0.3 (3) |
C15—N2—C16—C8 | 179.59 (13) | C13—C14—C15—N2 | 2.2 (2) |
Symmetry codes: (i) −x+1/2, y, −z+5/2; (ii) −x+1/2, y, −z+3/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9···O1iii | 0.95 | 2.70 | 3.565 (2) | 151 |
C15—H15···N4ii | 0.95 | 2.45 | 3.299 (2) | 149 |
Symmetry codes: (ii) −x+1/2, y, −z+3/2; (iii) x+1/2, −y, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Fe(C16H11N2O)2]N3 |
Mr | 592.42 |
Crystal system, space group | Monoclinic, P2/n |
Temperature (K) | 200 |
a, b, c (Å) | 11.3717 (8), 10.1190 (8), 11.7734 (6) |
β (°) | 109.3542 (15) |
V (Å3) | 1278.21 (15) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.64 |
Crystal size (mm) | 0.50 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.741, 0.883 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11530, 2929, 2556 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.031, 0.104, 0.86 |
No. of reflections | 2929 |
No. of parameters | 191 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.39 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), CrystalClear (Rigaku, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), Yadokari-XG (Wakita, 2000).
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9···O1i | 0.95 | 2.70 | 3.565 (2) | 151 |
C15—H15···N4ii | 0.95 | 2.45 | 3.299 (2) | 149 |
Symmetry codes: (i) x+1/2, −y, z+1/2; (ii) −x+1/2, y, −z+3/2. |
Acknowledgements
This work was supported by `Development of Molecular Devices in Ferroelectric Metallomesogens' in 2006 of the New Energy and Industrial Technology Development Organization (NEDO) of Japan and Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Governement (No. 20350028).
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Fe(III) complexes with the qsal ligands [Hqsal = N-(8-quinolyl)salicylaldimine] were reported previously (Hayami et al., 2001; Takahashi et al., 2006). It was showed that the spin states of the complexes can be tuned by the different counter anions. Some of the complexes were observed spin crossover or spin transition. The title compound (Fig. 1) does not show both spin-crossover behaviors but is in the low-spin state at room temperature. In the complex, Fe1—O1, Fe1—N1 and Fe1—N2 bond lengths (Table 1) are close to those for other low-spin Fe(III) complexes (Nihei et al., 2007).
In addition, many intermolecular interactions are observed in the crystal structure. The intermolecular C—H···N hydrogen bond (involving quinoline ring H15 and the azide N4), C—H···O hydrogen bond (involving quinoline ring H9 and phenolate O1) (Table 2), and π–π interaction [interplanar distance = 3.58 (1) Å] between the quinoline rings of adjacent molecules link the molecules and provide stability into the crystal structure.