metal-organic compounds
trans-Aqua(4,7-diazadecane-1,10-diamine-κ4N)fluoridochromium(III) bis(perchlorate) monohydrate
aDepartment of Chemistry, Andong National University, Andong 760-749, Republic of Korea, and bDepartment of Chemistry, Pukyong National University, 599-1 Daeyeon 3-dong Nam-gu, Busan 608-737, Republic of Korea
*Correspondence e-mail: uklee@pknu.ac.kr
In the title compound, [CrF(C8H20N4)(H2O)](ClO4)2·H2O, the Cr atom is in a slightly distorted octahedral environment, coordinated by four N atoms of the 4,7-diazadecane-1,10-diamine ligand, one water molecule and an F atom trans to water. The five-membered chelate ring is in a gauche form, while the two six-membered chelate rings are in chair conformations. The is stabilized by several hydrogen bonds.
Related literature
For the synthesis, see: Glerup et al. (1970). For related structures, see: Brencic et al. (1985); Choi et al. (1995, 2004, 2006, 2008). For other related literature, see: Choi & Hoggard (1992); Poon & Pun (1980); Stearns & Armstrong (1992).
Experimental
Crystal data
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Refinement
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Data collection: STADI4 (Stoe & Cie, 1996); cell STADI4; data reduction: X-RED (Stoe & Cie, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808026081/cf2211sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808026081/cf2211Isup2.hkl
As starting material, trans-[Cr(3,2,3-tet)F2]ClO4 was prepared according to the literature (Glerup et al., 1970). The complex trans-[Cr(3,2,3-tet)F2]ClO4 was dissolved in 0.2 M HClO4. The solution was heated at 333 K for 50 min and then a
of sodium perchlorate was added. Dark red crystals suitable for an X-ray structural determination were deposited over several days as the solution evaporated.All H atoms were positioned geometrically and refined using a riding model, with C—H = 0.95 Å for aromatic H atoms and 0.98 Å for methyl H atoms, respectively, and with Uiso(H) = 1.2Ueq(C) for aromatic and Uiso(H) = 1.5Ueq(C) for methyl H atoms. H atoms of O1w were located in a difference Fourier map and refined with constraints. Reasonable positions of H atoms for O2w could not obtained from a difference Fourier map.
Data collection: STADI4 (Stoe & Cie, 1996); cell
STADI4 (Stoe & Cie, 1996); data reduction: X-RED (Stoe & Cie, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. Molecular structure (30% probability ellipsoids) of the title compound. | |
Fig. 2. Hydrogen-bond interactions (dashed lines) in the title compound. [Symmetry codes: (i) x, -y+3/2, z-1/2; (ii) -x+1, -y+1, -z+1; (iii) x-1, y, z; (iv) x+1, y, z; (v) x, -y+3/2, z+1/2.] |
[CrF(C8H20N4)(H2O)](ClO4)2·H2O | F(000) = 996 |
Mr = 480.23 | Dx = 1.668 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71069 Å |
Hall symbol: -P 2ybc | Cell parameters from 32 reflections |
a = 9.950 (1) Å | θ = 19.0–20.8° |
b = 16.893 (2) Å | µ = 0.94 mm−1 |
c = 12.008 (1) Å | T = 298 K |
β = 108.65 (1)° | Block, dark red |
V = 1912.4 (4) Å3 | 0.43 × 0.30 × 0.25 mm |
Z = 4 |
Stoe Stadi-4 diffractometer | 3245 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.000 |
Graphite monochromator | θmax = 27.5°, θmin = 2.2° |
ω/2–θ scans | h = −12→12 |
Absorption correction: numerical (X-SHAPE; Stoe, 1996) | k = 0→21 |
Tmin = 0.686, Tmax = 0.889 | l = 0→15 |
4347 measured reflections | 3 standard reflections every 60 min |
4347 independent reflections | intensity decay: 3.1% |
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)] = 0.076 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.228 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | w = 1/[σ2(Fo2) + (0.1014P)2 + 6.2787P] where P = (Fo2 + 2Fc2)/3 |
4347 reflections | (Δ/σ)max < 0.001 |
243 parameters | Δρmax = 1.07 e Å−3 |
3 restraints | Δρmin = −0.60 e Å−3 |
[CrF(C8H20N4)(H2O)](ClO4)2·H2O | V = 1912.4 (4) Å3 |
Mr = 480.23 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.950 (1) Å | µ = 0.94 mm−1 |
b = 16.893 (2) Å | T = 298 K |
c = 12.008 (1) Å | 0.43 × 0.30 × 0.25 mm |
β = 108.65 (1)° |
Stoe Stadi-4 diffractometer | 3245 reflections with I > 2σ(I) |
Absorption correction: numerical (X-SHAPE; Stoe, 1996) | Rint = 0.000 |
Tmin = 0.686, Tmax = 0.889 | 3 standard reflections every 60 min |
4347 measured reflections | intensity decay: 3.1% |
4347 independent reflections |
R[F2 > 2σ(F2)] = 0.076 | 3 restraints |
wR(F2) = 0.228 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | Δρmax = 1.07 e Å−3 |
4347 reflections | Δρmin = −0.60 e Å−3 |
243 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
Cr | 0.77207 (8) | 0.74161 (4) | 0.61410 (6) | 0.0294 (2) | |
Cl1 | 0.25308 (17) | 0.51481 (9) | 0.64339 (13) | 0.0538 (4) | |
Cl2 | 1.24851 (16) | 0.84876 (12) | 0.62990 (16) | 0.0643 (5) | |
F | 0.7140 (3) | 0.74557 (18) | 0.7485 (2) | 0.0404 (7) | |
N1 | 0.6809 (5) | 0.6308 (3) | 0.5748 (4) | 0.0458 (11) | |
H1AN | 0.7106 | 0.6106 | 0.5164 | 0.055* | |
N2 | 0.5732 (4) | 0.7824 (3) | 0.5160 (4) | 0.0454 (11) | |
H1N2 | 0.5272 | 0.7928 | 0.5688 | 0.055* | |
N3 | 0.8507 (5) | 0.8564 (3) | 0.6485 (4) | 0.0435 (10) | |
H3AN | 0.8338 | 0.8731 | 0.7139 | 0.052* | |
H3BN | 0.9455 | 0.8539 | 0.6654 | 0.052* | |
N4 | 0.9663 (4) | 0.6910 (3) | 0.7114 (4) | 0.0414 (10) | |
H4AN | 1.0105 | 0.6748 | 0.6607 | 0.050* | |
H4BN | 1.0203 | 0.7291 | 0.7565 | 0.050* | |
C1 | 0.9611 (7) | 0.6231 (4) | 0.7887 (5) | 0.0523 (14) | |
H1A | 0.9198 | 0.6405 | 0.8476 | 0.063* | |
H1B | 1.0569 | 0.6051 | 0.8291 | 0.063* | |
C2 | 0.8750 (8) | 0.5550 (4) | 0.7202 (7) | 0.0643 (18) | |
H2A | 0.8905 | 0.5089 | 0.7711 | 0.077* | |
H2B | 0.9095 | 0.5423 | 0.6554 | 0.077* | |
C3 | 0.7171 (8) | 0.5710 (4) | 0.6718 (6) | 0.0639 (18) | |
H3A | 0.6679 | 0.5219 | 0.6425 | 0.077* | |
H3B | 0.6840 | 0.5898 | 0.7348 | 0.077* | |
C4 | 0.5235 (7) | 0.6431 (5) | 0.5235 (6) | 0.0643 (19) | |
H4A | 0.4797 | 0.5967 | 0.4788 | 0.077* | |
H4B | 0.4827 | 0.6510 | 0.5860 | 0.077* | |
C5 | 0.4968 (6) | 0.7142 (5) | 0.4451 (5) | 0.065 (2) | |
H5A | 0.5311 | 0.7049 | 0.3791 | 0.078* | |
H5B | 0.3959 | 0.7252 | 0.4147 | 0.078* | |
C6 | 0.5603 (7) | 0.8554 (5) | 0.4447 (5) | 0.0629 (19) | |
H6A | 0.4607 | 0.8690 | 0.4110 | 0.076* | |
H6B | 0.5972 | 0.8452 | 0.3805 | 0.076* | |
C7 | 0.6384 (8) | 0.9245 (4) | 0.5152 (7) | 0.068 (2) | |
H7A | 0.6117 | 0.9719 | 0.4677 | 0.082* | |
H7B | 0.6070 | 0.9311 | 0.5833 | 0.082* | |
C8 | 0.7971 (7) | 0.9183 (4) | 0.5569 (6) | 0.0586 (16) | |
H8A | 0.8289 | 0.9063 | 0.4904 | 0.070* | |
H8B | 0.8372 | 0.9690 | 0.5885 | 0.070* | |
O1 | 0.2360 (12) | 0.5429 (5) | 0.5295 (7) | 0.143 (3) | |
O2 | 0.1991 (14) | 0.4382 (5) | 0.6357 (8) | 0.183 (5) | |
O3 | 0.3986 (11) | 0.5079 (10) | 0.6805 (16) | 0.257 (8) | |
O4 | 0.2177 (16) | 0.5591 (8) | 0.7161 (12) | 0.231 (7) | |
O5 | 1.1848 (9) | 0.8171 (7) | 0.7049 (9) | 0.173 (5) | |
O6 | 1.1523 (12) | 0.9046 (7) | 0.5676 (8) | 0.186 (5) | |
O7 | 1.2769 (14) | 0.7974 (8) | 0.5576 (17) | 0.277 (10) | |
O8 | 1.3760 (9) | 0.8831 (8) | 0.6872 (10) | 0.188 (5) | |
O1W | 0.8322 (4) | 0.7379 (3) | 0.4706 (3) | 0.0412 (9) | |
H1OA | 0.782 (7) | 0.743 (4) | 0.398 (6) | 0.07 (2)* | |
H1OB | 0.896 (6) | 0.714 (4) | 0.474 (5) | 0.046 (19)* | |
O2W | 1.0660 (6) | 0.6849 (4) | 0.4419 (5) | 0.0841 (17) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cr | 0.0281 (4) | 0.0384 (4) | 0.0229 (4) | −0.0002 (3) | 0.0098 (3) | −0.0013 (3) |
Cl1 | 0.0632 (9) | 0.0531 (8) | 0.0533 (8) | −0.0025 (7) | 0.0302 (7) | −0.0047 (6) |
Cl2 | 0.0436 (8) | 0.0758 (11) | 0.0728 (11) | −0.0005 (7) | 0.0175 (7) | 0.0124 (9) |
F | 0.0427 (16) | 0.0559 (18) | 0.0266 (13) | −0.0032 (13) | 0.0166 (12) | −0.0043 (12) |
N1 | 0.049 (3) | 0.050 (3) | 0.044 (2) | −0.015 (2) | 0.022 (2) | −0.013 (2) |
N2 | 0.032 (2) | 0.073 (3) | 0.032 (2) | 0.010 (2) | 0.0118 (17) | 0.001 (2) |
N3 | 0.048 (3) | 0.040 (2) | 0.048 (3) | −0.0004 (19) | 0.022 (2) | −0.0008 (19) |
N4 | 0.035 (2) | 0.051 (3) | 0.037 (2) | 0.0042 (19) | 0.0107 (18) | 0.0039 (19) |
C1 | 0.064 (4) | 0.053 (3) | 0.042 (3) | 0.014 (3) | 0.019 (3) | 0.010 (3) |
C2 | 0.083 (5) | 0.036 (3) | 0.078 (5) | 0.007 (3) | 0.032 (4) | 0.011 (3) |
C3 | 0.082 (5) | 0.048 (3) | 0.071 (4) | −0.019 (3) | 0.038 (4) | −0.002 (3) |
C4 | 0.043 (3) | 0.082 (5) | 0.068 (4) | −0.026 (3) | 0.018 (3) | −0.027 (4) |
C5 | 0.033 (3) | 0.113 (6) | 0.041 (3) | −0.008 (3) | 0.001 (2) | −0.018 (4) |
C6 | 0.048 (3) | 0.097 (5) | 0.045 (3) | 0.030 (3) | 0.017 (3) | 0.029 (3) |
C7 | 0.077 (5) | 0.060 (4) | 0.077 (5) | 0.033 (4) | 0.036 (4) | 0.022 (4) |
C8 | 0.067 (4) | 0.044 (3) | 0.077 (4) | 0.008 (3) | 0.041 (4) | 0.012 (3) |
O1 | 0.220 (10) | 0.118 (6) | 0.095 (5) | −0.040 (6) | 0.058 (6) | −0.005 (5) |
O2 | 0.337 (15) | 0.099 (6) | 0.131 (7) | −0.105 (8) | 0.099 (9) | −0.011 (5) |
O3 | 0.109 (8) | 0.285 (16) | 0.40 (2) | 0.041 (10) | 0.120 (11) | 0.135 (16) |
O4 | 0.320 (17) | 0.204 (12) | 0.246 (13) | −0.030 (11) | 0.198 (13) | −0.117 (10) |
O5 | 0.113 (6) | 0.241 (12) | 0.196 (10) | −0.005 (7) | 0.091 (7) | 0.089 (9) |
O6 | 0.198 (10) | 0.226 (12) | 0.105 (6) | 0.110 (9) | 0.007 (6) | 0.029 (7) |
O7 | 0.226 (13) | 0.185 (11) | 0.53 (3) | −0.062 (9) | 0.278 (17) | −0.190 (15) |
O8 | 0.091 (6) | 0.270 (13) | 0.173 (9) | −0.082 (7) | 0.002 (5) | 0.040 (9) |
O1W | 0.0369 (19) | 0.063 (2) | 0.0266 (17) | 0.0085 (18) | 0.0144 (15) | 0.0048 (16) |
O2W | 0.061 (3) | 0.110 (5) | 0.088 (4) | 0.030 (3) | 0.033 (3) | 0.003 (3) |
Cr—F | 1.881 (3) | N4—H4BN | 0.900 |
Cr—O1W | 1.997 (3) | C1—C2 | 1.511 (10) |
Cr—N1 | 2.068 (5) | C1—H1A | 0.970 |
Cr—N2 | 2.070 (4) | C1—H1B | 0.970 |
Cr—N3 | 2.082 (5) | C2—C3 | 1.516 (10) |
Cr—N4 | 2.095 (4) | C2—H2A | 0.970 |
Cl1—O4 | 1.282 (8) | C2—H2B | 0.970 |
Cl1—O3 | 1.377 (11) | C3—H3A | 0.970 |
Cl1—O2 | 1.392 (8) | C3—H3B | 0.970 |
Cl1—O1 | 1.405 (8) | C4—C5 | 1.498 (11) |
Cl2—O7 | 1.321 (10) | C4—H4A | 0.970 |
Cl2—O8 | 1.364 (8) | C4—H4B | 0.970 |
Cl2—O5 | 1.365 (7) | C5—H5A | 0.970 |
Cl2—O6 | 1.381 (9) | C5—H5B | 0.970 |
N1—C3 | 1.496 (8) | C6—C7 | 1.504 (11) |
N1—C4 | 1.502 (8) | C6—H6A | 0.970 |
N1—H1AN | 0.910 | C6—H6B | 0.970 |
N2—C6 | 1.484 (8) | C7—C8 | 1.499 (10) |
N2—C5 | 1.488 (8) | C7—H7A | 0.970 |
N2—H1N2 | 0.910 | C7—H7B | 0.970 |
N3—C8 | 1.488 (8) | C8—H8A | 0.970 |
N3—H3AN | 0.900 | C8—H8B | 0.970 |
N3—H3BN | 0.900 | O1W—H1OA | 0.86 (6) |
N4—C1 | 1.487 (7) | O1W—H1OB | 0.74 (6) |
N4—H4AN | 0.900 | ||
F—Cr—O1W | 179.49 (16) | N4—C1—C2 | 112.0 (5) |
F—Cr—N1 | 89.72 (16) | N4—C1—H1A | 109.2 |
O1W—Cr—N1 | 90.30 (18) | C2—C1—H1A | 109.2 |
F—Cr—N2 | 88.63 (15) | N4—C1—H1B | 109.2 |
O1W—Cr—N2 | 90.87 (17) | C2—C1—H1B | 109.2 |
N1—Cr—N2 | 84.3 (2) | H1A—C1—H1B | 107.9 |
F—Cr—N3 | 89.77 (16) | C1—C2—C3 | 114.3 (5) |
O1W—Cr—N3 | 90.17 (18) | C1—C2—H2A | 108.7 |
N1—Cr—N3 | 176.23 (19) | C3—C2—H2A | 108.7 |
N2—Cr—N3 | 91.9 (2) | C1—C2—H2B | 108.7 |
F—Cr—N4 | 91.04 (15) | C3—C2—H2B | 108.7 |
O1W—Cr—N4 | 89.47 (17) | H2A—C2—H2B | 107.6 |
N1—Cr—N4 | 90.98 (19) | N1—C3—C2 | 112.4 (5) |
N2—Cr—N4 | 175.3 (2) | N1—C3—H3A | 109.1 |
N3—Cr—N4 | 92.77 (19) | C2—C3—H3A | 109.1 |
O4—Cl1—O3 | 108.6 (11) | N1—C3—H3B | 109.1 |
O4—Cl1—O2 | 113.8 (8) | C2—C3—H3B | 109.1 |
O3—Cl1—O2 | 106.6 (9) | H3A—C3—H3B | 107.9 |
O4—Cl1—O1 | 119.5 (9) | C5—C4—N1 | 108.7 (5) |
O3—Cl1—O1 | 97.5 (8) | C5—C4—H4A | 109.9 |
O2—Cl1—O1 | 108.9 (5) | N1—C4—H4A | 109.9 |
O7—Cl2—O8 | 104.5 (8) | C5—C4—H4B | 109.9 |
O7—Cl2—O5 | 114.7 (9) | N1—C4—H4B | 109.9 |
O8—Cl2—O5 | 112.8 (7) | H4A—C4—H4B | 108.3 |
O7—Cl2—O6 | 110.5 (10) | N2—C5—C4 | 107.8 (5) |
O8—Cl2—O6 | 110.7 (8) | N2—C5—H5A | 110.1 |
O5—Cl2—O6 | 103.7 (7) | C4—C5—H5A | 110.1 |
C3—N1—C4 | 111.9 (5) | N2—C5—H5B | 110.1 |
C3—N1—Cr | 117.1 (4) | C4—C5—H5B | 110.1 |
C4—N1—Cr | 107.0 (4) | H5A—C5—H5B | 108.5 |
C3—N1—H1AN | 106.8 | N2—C6—C7 | 112.8 (5) |
C4—N1—H1AN | 106.8 | N2—C6—H6A | 109.0 |
Cr—N1—H1AN | 106.8 | C7—C6—H6A | 109.0 |
C6—N2—C5 | 112.3 (5) | N2—C6—H6B | 109.0 |
C6—N2—Cr | 119.7 (4) | C7—C6—H6B | 109.0 |
C5—N2—Cr | 106.8 (4) | H6A—C6—H6B | 107.8 |
C6—N2—H1N2 | 105.7 | C8—C7—C6 | 115.7 (6) |
C5—N2—H1N2 | 105.7 | C8—C7—H7A | 108.4 |
Cr—N2—H1N2 | 105.7 | C6—C7—H7A | 108.4 |
C8—N3—Cr | 119.0 (4) | C8—C7—H7B | 108.4 |
C8—N3—H3AN | 107.6 | C6—C7—H7B | 108.4 |
Cr—N3—H3AN | 107.6 | H7A—C7—H7B | 107.4 |
C8—N3—H3BN | 107.6 | N3—C8—C7 | 112.7 (5) |
Cr—N3—H3BN | 107.6 | N3—C8—H8A | 109.0 |
H3AN—N3—H3BN | 107.0 | C7—C8—H8A | 109.0 |
C1—N4—Cr | 116.9 (4) | N3—C8—H8B | 109.0 |
C1—N4—H4AN | 108.1 | C7—C8—H8B | 109.0 |
Cr—N4—H4AN | 108.1 | H8A—C8—H8B | 107.8 |
C1—N4—H4BN | 108.1 | Cr—O1W—H1OA | 129 (5) |
Cr—N4—H4BN | 108.1 | Cr—O1W—H1OB | 117 (5) |
H4AN—N4—H4BN | 107.3 | H1OA—O1W—H1OB | 109 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1OA···Fi | 0.86 (6) | 1.72 (6) | 2.564 (5) | 168 (8) |
O1W—H1OB···O2W | 0.74 (6) | 1.92 (6) | 2.617 (6) | 158 (7) |
N1—H1AN···O2ii | 0.91 | 2.42 | 3.332 (11) | 177 |
N2—H1N2···O7iii | 0.91 | 2.45 | 3.154 (10) | 134 |
N3—H3BN···O5 | 0.90 | 2.36 | 3.242 (10) | 167 |
N4—H4BN···O5 | 0.90 | 2.43 | 3.062 (10) | 127 |
C1—H1B···O4iv | 0.97 | 2.53 | 3.141 (13) | 121 |
Symmetry codes: (i) x, −y+3/2, z−1/2; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z; (iv) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | [CrF(C8H20N4)(H2O)](ClO4)2·H2O |
Mr | 480.23 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 9.950 (1), 16.893 (2), 12.008 (1) |
β (°) | 108.65 (1) |
V (Å3) | 1912.4 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.94 |
Crystal size (mm) | 0.43 × 0.30 × 0.25 |
Data collection | |
Diffractometer | Stoe Stadi-4 diffractometer |
Absorption correction | Numerical (X-SHAPE; Stoe, 1996) |
Tmin, Tmax | 0.686, 0.889 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4347, 4347, 3245 |
Rint | 0.000 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.076, 0.228, 1.09 |
No. of reflections | 4347 |
No. of parameters | 243 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 1.07, −0.60 |
Computer programs: STADI4 (Stoe & Cie, 1996), X-RED (Stoe & Cie, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1OA···Fi | 0.86 (6) | 1.72 (6) | 2.564 (5) | 168 (8) |
O1W—H1OB···O2W | 0.74 (6) | 1.92 (6) | 2.617 (6) | 158 (7) |
N1—H1AN···O2ii | 0.91 | 2.42 | 3.332 (11) | 176.8 |
N2—H1N2···O7iii | 0.91 | 2.45 | 3.154 (10) | 134.1 |
N3—H3BN···O5 | 0.90 | 2.36 | 3.242 (10) | 167.3 |
N4—H4BN···O5 | 0.90 | 2.43 | 3.062 (10) | 127.2 |
C1—H1B···O4iv | 0.97 | 2.53 | 3.141 (13) | 121.1 |
Symmetry codes: (i) x, −y+3/2, z−1/2; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z; (iv) x+1, y, z. |
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Acyclic flexible 4,7-diazadecane-1,10-diamine (3,2,3-tet) and its related tetradentate ligands provide a rich field of geometric and conformational isomers in octahedral transition metal complexes (Choi et al., 2008). The electronic absorption and infrared spectra often can be used diagnostically to identify the geometric isomers of chromium(III) complexes complexes (Poon & Pun, 1980; Choi & Hoggard, 1992). However, it should be noted that the assignments based on spectroscopic investigations are not always conclusive (Stearns & Armstrong, 1992). [Cr(3,2,3-tet)F(H2O)]X2 can adopt a diverse stereochemistry and configuration, but no structures have been reported. Thus we here report the crystal structure of the title complex (Fig. 1) in order to confirm the geometric configuration.
There are one fluorine atom and one water molecule coordinated to the chromium atom in a trans arrangement with an F—Cr—O1w bond angle of 179.5 (2)°. The rest of the coordination sites are occupied by four nitrogen atoms from 3,2,3-tet ligand in the equatorial plane. The mean Cr—N bond length of 2.079 (4) Å is normal, agreeing with literature values (Choi et al., 1995; Choi et al., 2004). The Cr—N1 and Cr—N2 bond lengths of 2.068 (5) and 2.070 (4) Å of secondary amines are slightly shorter than Cr—N3 and Cr—N4 distances of 2.082 (5) and 2.095 (4) Å of primary amines. The Cr—F distance of 1.881 (3) Å and Cr—O1W of 1.996 (4) Å are also compararble to the values of 1.870 (1) Å and 2.023 (2) Å found in trans-[Cr([15]aneN4)F2]ClO4 (Choi et al., 2006) and trans-[Cr(NH3)4Cl(H2O)]Cl2 (Brencic et al., 1985), respectively. The short Cr—F bond length suggests a strong bond.
The uncoordinated ClO4- anions and one water molecule remain outside the coordination sphere. There is an extensive hydrogen bonding network (Table 2) between the oxygens of the ClO4- anions, fluorine atom, water molecule, C—H and the N—H groups of the 3,2,3-tet ligand as shown in Figure 2. These hydrogen-bonded networks help to stabilize the crystal structure.