Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807041037/kp2132sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807041037/kp2132Isup2.hkl |
CCDC reference: 660164
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.014 Å Some non-H atoms missing
- Disorder in solvent or counterion
- R factor = 0.051
- wR factor = 0.133
- Data-to-parameter ratio = 14.1
checkCIF/PLATON results
No syntax errors found
Alert level B ABSTM02_ALERT_3_B The ratio of Tmax/Tmin expected RT(exp) is > 1.20 Absorption corrections should be applied. Tmin and Tmax expected: 0.311 0.392 RT(exp) = 1.263 PLAT057_ALERT_3_B Correction for Absorption Required RT(exp) ... 1.26 PLAT417_ALERT_2_B Short Inter D-H..H-D H1WA .. H5A .. 1.38 Ang. PLAT420_ALERT_2_B D-H Without Acceptor O1W - H1WB ... ? PLAT430_ALERT_2_B Short Inter D...A Contact O2 .. O4 .. 2.76 Ang.
Alert level C ABSTY03_ALERT_1_C The _exptl_absorpt_correction_type has been given as none. However values have been given for Tmin and Tmax. Remove these if an absorption correction has not been applied. From the CIF: _exptl_absorpt_correction_T_min 0.357 From the CIF: _exptl_absorpt_correction_T_max 0.455 CHEMW01_ALERT_1_C The difference between the given and expected weight for compound is greater 1 mass unit. Check that all hydrogen atoms have been taken into account. CRYSC01_ALERT_1_C The word below has not been recognised as a standard identifier. deep PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low ....... 0.96 PLAT041_ALERT_1_C Calc. and Rep. SumFormula Strings Differ .... ? PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ .... ? PLAT045_ALERT_1_C Calculated and Reported Z Differ by ............ 0.50 Ratio PLAT094_ALERT_2_C Ratio of Maximum / Minimum Residual Density .... 2.84 PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given ....... ? PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent ..... ? PLAT241_ALERT_2_C Check High Ueq as Compared to Neighbors for O3 PLAT302_ALERT_4_C Anion/Solvent Disorder ......................... 33.00 Perc. PLAT341_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ... 14 PLAT431_ALERT_2_C Short Inter HL..A Contact Br3 .. Br3 .. 3.56 Ang. PLAT432_ALERT_2_C Short Inter X...Y Contact O1W .. C19 .. 2.98 Ang. PLAT480_ALERT_4_C Long H...A H-Bond Reported H5A .. BR1 .. 3.04 Ang. PLAT481_ALERT_4_C Long D...A H-Bond Reported O5 .. BR1 .. 3.89 Ang. PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........ 2
Alert level G FORMU01_ALERT_1_G There is a discrepancy between the atom counts in the _chemical_formula_sum and _chemical_formula_moiety. This is usually due to the moiety formula being in the wrong format. Atom count from _chemical_formula_sum: C18.4 H18 Br4 Mn1 N2 O5.5 Atom count from _chemical_formula_moiety:C18.5 H18 Br4 Mn1 N2 O5.5 FORMU01_ALERT_2_G There is a discrepancy between the atom counts in the _chemical_formula_sum and the formula from the _atom_site* data. Atom count from _chemical_formula_sum:C18.4 H18 Br4 Mn1 N2 O5.5 Atom count from the _atom_site data: C18.5 H18 Br4 Mn1 N2 O5.5 CELLZ01_ALERT_1_G Difference between formula and atom_site contents detected. CELLZ01_ALERT_1_G ALERT: Large difference may be due to a symmetry error - see SYMMG tests From the CIF: _cell_formula_units_Z 16 From the CIF: _chemical_formula_sum C18.4 H18 Br4 Mn1 N2 O5.5 TEST: Compare cell contents of formula and atom_site data atom Z*formula cif sites diff C 294.40 296.00 -1.60 H 288.00 288.00 0.00 Br 64.00 64.00 0.00 Mn 16.00 16.00 0.00 N 32.00 32.00 0.00 O 88.00 88.00 0.00 REFLT03_ALERT_1_G ALERT: Expected hkl max differ from CIF values From the CIF: _diffrn_reflns_theta_max 25.99 From the CIF: _reflns_number_total 4075 From the CIF: _diffrn_reflns_limit_ max hkl 14. 38. 12. From the CIF: _diffrn_reflns_limit_ min hkl -32. -38. -13. TEST1: Expected hkl limits for theta max Calculated maximum hkl 32. 40. 13. Calculated minimum hkl -32. -40. -13. REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is correct. If it is not, please give the correct count in the _publ_section_exptl_refinement section of the submitted CIF. From the CIF: _diffrn_reflns_theta_max 25.99 From the CIF: _reflns_number_total 4075 Count of symmetry unique reflns 2503 Completeness (_total/calc) 162.80% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 1572 Fraction of Friedel pairs measured 0.628 Are heavy atom types Z>Si present yes PLAT033_ALERT_2_G Flack Parameter Value Deviates 2 * su from zero. 0.05 PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints ....... 20
0 ALERT level A = In general: serious problem 5 ALERT level B = Potentially serious problem 18 ALERT level C = Check and explain 10 ALERT level G = General alerts; check 13 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 9 ALERT type 2 Indicator that the structure model may be wrong or deficient 5 ALERT type 3 Indicator that the structure quality may be low 6 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check
A similar manganese (II) complex also has a distorted octahedral geometry (Kessissoglou et al., 1986). For related literature, see: Cohen et al. (1964); Zordan et al. (2005); Desiraju (1989); Zaman et al. (2004); Sarma & Desiraju (1986).
A solution of 2-amino-ethanol (0.061 g, 1 mmol) and caustic potash (0.112 g, 2 mmol) in methanol (10 ml) was added slowly to a solution of 3,5-dibromo-2-hydroxybenzaldehyde (1 mmol, 0.280 g) in methanol (20 ml). The mixture was stirred for 1 h at 323 K, then added slowly to a solution of MnCl2 (2 mmol, 0.396 g) in methanol (10 ml). This mixture was stirred and refluxed for 2 h at 323 K. The solution was filtered and the filtrate was left to stand at room temperature. Deep purple suitable for X-ray diffraction were obtained in a yield of 38% (based on manganese).
H atoms of the water molecule were located in a difference Fourier map. The O—H distances were normalized to 0.85 Å and the H atoms were allowed to ride on the O atom, with Uiso(H) = 1.5 Ueq(O). All other H atoms were positioned geometrically and refined as riding, with C–H distances of 0.93–0.97 Å and Uiso(H) = 1.2 Ueq(C).
Interest on packing arrangements of halogenated compounds goes back many years to what Schmidt called the 'chloro effect', where the presence of chloro substituents on aromatic compounds frequently results in stacking arrangements with a short (ca 4 Å) crystallographic axis (Cohen et al., 1964; Zordan et al., 2005; Desiraju, 1989). The title compound, (I), contains the dibrominated ligand L- with two Br atoms accessible at the periphery of each ligand.
In (I) the MnIV atom is coordinated by two N and four O atoms from two different tridentate ligands L2- forming a distorted octahedral geometry (Fig. 1 and Table 1). The shortest Br···Br contacts (Zordan et al., 2005; Zaman et al., 2004; Sarma & Desiraju, 1986) are Br3i···Br3ii = 3.555 (5) Å, Br3i···Br4iii = 3.742 (5) Å, and Br4i···Br2iv = 3.631 (5) Å, [symmetry codes: (i) 1/2 - x, -1/2 - y, z; (ii) x, -1 + y, z; (iii) 1/4 + x,-1/4 - y, -1/4 + z; (iv) 1/4 - x, -3/4 - y, 1/4 + z]. The molecules of (I) are connected into a 3-D network through short Br···Br interactions, very strong O–H···O hydrogen bond and O–H···Br hydrogen bond (Table 2 and Fig. 2).
A similar manganese (II) complex also has a distorted octahedral geometry (Kessissoglou et al., 1986). For related literature, see: Cohen et al. (1964); Zordan et al. (2005); Desiraju (1989); Zaman et al. (2004); Sarma & Desiraju (1986).
Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL (Bruker, 1997).
C18H14Br4MnN2O4·0.5CH4O·H2O | Dx = 2.010 Mg m−3 |
Mr = 730.89 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, Fdd2 | Cell parameters from 4075 reflections |
a = 26.286 (4) Å | θ = 2.5–26.0° |
b = 32.908 (5) Å | µ = 7.20 mm−1 |
c = 11.1681 (17) Å | T = 293 K |
V = 9661 (2) Å3 | Block, deep purple |
Z = 16 | 0.18 × 0.14 × 0.13 mm |
F(000) = 5632 |
Bruker SMART CCD area-detector diffractometer | 4075 independent reflections |
Radiation source: fine-focus sealed tube | 3143 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
φ and ω scans | θmax = 26.0°, θmin = 2.5° |
Absorption correction: multi-scan SADABS (Sheldrick, 1996) | h = −32→14 |
Tmin = 0.357, Tmax = 0.455 | k = −38→38 |
8149 measured reflections | l = −13→12 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.051 | H-atom parameters constrained |
wR(F2) = 0.133 | w = 1/[σ2(Fo2) + (0.0654P)2 + 43.5887P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max < 0.001 |
4075 reflections | Δρmax = 1.09 e Å−3 |
290 parameters | Δρmin = −0.39 e Å−3 |
20 restraints | Absolute structure: Flack (1983), 1669 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.045 (19) |
C18H14Br4MnN2O4·0.5CH4O·H2O | V = 9661 (2) Å3 |
Mr = 730.89 | Z = 16 |
Orthorhombic, Fdd2 | Mo Kα radiation |
a = 26.286 (4) Å | µ = 7.20 mm−1 |
b = 32.908 (5) Å | T = 293 K |
c = 11.1681 (17) Å | 0.18 × 0.14 × 0.13 mm |
Bruker SMART CCD area-detector diffractometer | 4075 independent reflections |
Absorption correction: multi-scan SADABS (Sheldrick, 1996) | 3143 reflections with I > 2σ(I) |
Tmin = 0.357, Tmax = 0.455 | Rint = 0.029 |
8149 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | H-atom parameters constrained |
wR(F2) = 0.133 | w = 1/[σ2(Fo2) + (0.0654P)2 + 43.5887P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | Δρmax = 1.09 e Å−3 |
4075 reflections | Δρmin = −0.39 e Å−3 |
290 parameters | Absolute structure: Flack (1983), 1669 Friedel pairs |
20 restraints | Absolute structure parameter: 0.045 (19) |
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 | Occ. (<1) | |
Mn1 | 0.04388 (5) | 0.25185 (4) | 0.55027 (13) | 0.0418 (3) | |
Br1 | 0.14995 (5) | 0.31726 (4) | 0.25588 (13) | 0.0797 (4) | |
Br2 | 0.21088 (5) | 0.16499 (5) | 0.07739 (14) | 0.1024 (5) | |
Br3 | 0.18568 (5) | 0.26672 (3) | 0.84250 (12) | 0.0769 (4) | |
Br4 | 0.09302 (5) | 0.40746 (4) | 1.02880 (13) | 0.0909 (5) | |
C1 | 0.1120 (3) | 0.2418 (3) | 0.3450 (9) | 0.045 (2) | |
C2 | 0.1451 (4) | 0.2600 (3) | 0.2601 (11) | 0.063 (3) | |
C3 | 0.1729 (4) | 0.2370 (4) | 0.1815 (12) | 0.074 (3) | |
H3 | 0.1939 | 0.2493 | 0.1253 | 0.089* | |
C4 | 0.1690 (5) | 0.1956 (4) | 0.1872 (11) | 0.073 (3) | |
C5 | 0.1366 (3) | 0.1763 (3) | 0.2602 (10) | 0.058 (3) | |
H5 | 0.1323 | 0.1483 | 0.2543 | 0.070* | |
C6 | 0.1091 (3) | 0.1988 (3) | 0.3463 (9) | 0.048 (2) | |
C7 | 0.0781 (3) | 0.1767 (3) | 0.4321 (10) | 0.049 (2) | |
H7 | 0.0756 | 0.1487 | 0.4238 | 0.059* | |
C8 | 0.0263 (4) | 0.1681 (3) | 0.6026 (11) | 0.062 (3) | |
H8A | 0.0481 | 0.1606 | 0.6690 | 0.075* | |
H8B | 0.0142 | 0.1435 | 0.5642 | 0.075* | |
C9 | −0.0180 (3) | 0.1932 (3) | 0.6464 (11) | 0.059 (3) | |
H9A | −0.0444 | 0.1944 | 0.5857 | 0.071* | |
H9B | −0.0323 | 0.1813 | 0.7183 | 0.071* | |
C10 | 0.0955 (3) | 0.3013 (3) | 0.7461 (9) | 0.046 (2) | |
C11 | 0.1330 (4) | 0.3063 (3) | 0.8315 (10) | 0.059 (3) | |
C12 | 0.1339 (4) | 0.3363 (3) | 0.9175 (8) | 0.052 (2) | |
H12 | 0.1592 | 0.3375 | 0.9758 | 0.062* | |
C13 | 0.0937 (4) | 0.3656 (3) | 0.9116 (10) | 0.061 (3) | |
C14 | 0.0584 (3) | 0.3634 (3) | 0.8245 (9) | 0.051 (2) | |
H14 | 0.0334 | 0.3834 | 0.8202 | 0.061* | |
C15 | 0.0581 (3) | 0.3327 (3) | 0.7422 (8) | 0.045 (2) | |
C16 | 0.0194 (3) | 0.3353 (3) | 0.6506 (9) | 0.046 (2) | |
H16 | −0.0019 | 0.3579 | 0.6536 | 0.055* | |
C17 | −0.0327 (4) | 0.3176 (3) | 0.4826 (10) | 0.063 (3) | |
H17A | −0.0575 | 0.3347 | 0.5224 | 0.075* | |
H17B | −0.0207 | 0.3317 | 0.4117 | 0.075* | |
C18 | −0.0569 (3) | 0.2783 (3) | 0.4473 (10) | 0.057 (3) | |
H18A | −0.0751 | 0.2671 | 0.5153 | 0.069* | |
H18B | −0.0813 | 0.2831 | 0.3838 | 0.069* | |
N1 | 0.0543 (2) | 0.1932 (2) | 0.5168 (8) | 0.0453 (17) | |
N2 | 0.0111 (3) | 0.3096 (2) | 0.5650 (7) | 0.0466 (17) | |
O1 | 0.0876 (2) | 0.26594 (18) | 0.4206 (6) | 0.0494 (15) | |
O2 | 0.0007 (2) | 0.23280 (19) | 0.6711 (6) | 0.0564 (17) | |
O3 | 0.0963 (3) | 0.2718 (2) | 0.6697 (7) | 0.0630 (19) | |
O4 | −0.0208 (2) | 0.2505 (2) | 0.4085 (6) | 0.0536 (16) | |
O5 | −0.0213 (4) | 0.4752 (5) | 0.7733 (17) | 0.081 (4) | 0.50 |
H5A | −0.0383 | 0.4657 | 0.7150 | 0.121* | 0.50 |
C19 | 0.0282 (5) | 0.4748 (6) | 0.759 (2) | 0.068 (6) | 0.50 |
H19A | 0.0378 | 0.4953 | 0.7022 | 0.102* | 0.50 |
H19B | 0.0388 | 0.4487 | 0.7305 | 0.102* | 0.50 |
H19C | 0.0444 | 0.4803 | 0.8346 | 0.102* | 0.50 |
O1W | −0.0549 (6) | 0.4146 (5) | 0.7965 (13) | 0.172 (6) | |
H1WA | −0.0572 | 0.4403 | 0.8021 | 0.257* | |
H1WB | −0.0857 | 0.4111 | 0.7760 | 0.257* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.0489 (6) | 0.0388 (7) | 0.0378 (7) | 0.0059 (6) | −0.0051 (6) | −0.0072 (6) |
Br1 | 0.0789 (7) | 0.0729 (8) | 0.0871 (9) | −0.0109 (6) | 0.0038 (6) | 0.0148 (7) |
Br2 | 0.0957 (9) | 0.1375 (13) | 0.0739 (10) | 0.0320 (8) | 0.0151 (7) | −0.0354 (9) |
Br3 | 0.0814 (7) | 0.0637 (7) | 0.0855 (9) | 0.0061 (6) | −0.0389 (6) | −0.0095 (6) |
Br4 | 0.0996 (8) | 0.0844 (8) | 0.0886 (11) | −0.0175 (7) | 0.0070 (7) | −0.0550 (8) |
C1 | 0.040 (4) | 0.055 (6) | 0.041 (5) | 0.003 (4) | −0.003 (4) | −0.017 (5) |
C2 | 0.080 (7) | 0.062 (6) | 0.046 (7) | 0.002 (5) | −0.002 (5) | 0.004 (5) |
C3 | 0.061 (6) | 0.108 (11) | 0.054 (8) | −0.008 (6) | −0.013 (5) | 0.003 (7) |
C4 | 0.085 (8) | 0.092 (9) | 0.043 (7) | 0.018 (7) | −0.013 (6) | −0.026 (6) |
C5 | 0.050 (5) | 0.075 (7) | 0.049 (6) | 0.012 (5) | 0.008 (5) | −0.020 (6) |
C6 | 0.035 (4) | 0.060 (6) | 0.050 (6) | 0.001 (4) | 0.003 (4) | −0.013 (5) |
C7 | 0.056 (5) | 0.029 (5) | 0.063 (7) | 0.008 (4) | −0.003 (5) | −0.011 (5) |
C8 | 0.069 (6) | 0.059 (6) | 0.059 (7) | −0.012 (5) | 0.002 (5) | 0.003 (5) |
C9 | 0.048 (5) | 0.062 (7) | 0.067 (7) | −0.008 (5) | −0.004 (5) | 0.010 (5) |
C10 | 0.050 (5) | 0.032 (5) | 0.055 (6) | −0.006 (4) | −0.001 (4) | −0.001 (4) |
C11 | 0.077 (6) | 0.041 (5) | 0.058 (7) | −0.005 (4) | −0.012 (5) | −0.002 (5) |
C12 | 0.065 (6) | 0.052 (6) | 0.039 (6) | −0.018 (5) | −0.007 (4) | −0.012 (4) |
C13 | 0.064 (6) | 0.068 (7) | 0.050 (6) | −0.019 (5) | 0.010 (5) | −0.028 (5) |
C14 | 0.056 (5) | 0.047 (5) | 0.050 (6) | 0.006 (4) | 0.009 (4) | −0.011 (4) |
C15 | 0.054 (5) | 0.037 (5) | 0.043 (6) | −0.012 (4) | 0.009 (4) | −0.010 (4) |
C16 | 0.058 (5) | 0.034 (5) | 0.045 (6) | 0.006 (4) | 0.000 (4) | 0.003 (4) |
C17 | 0.072 (6) | 0.061 (7) | 0.056 (7) | 0.023 (5) | −0.018 (5) | −0.003 (5) |
C18 | 0.043 (5) | 0.080 (7) | 0.050 (6) | 0.008 (5) | −0.002 (4) | 0.001 (5) |
N1 | 0.034 (3) | 0.051 (4) | 0.050 (5) | 0.000 (3) | −0.005 (3) | −0.005 (4) |
N2 | 0.054 (4) | 0.044 (4) | 0.042 (5) | 0.009 (3) | −0.009 (3) | −0.004 (4) |
O1 | 0.044 (3) | 0.047 (4) | 0.057 (4) | 0.002 (3) | 0.006 (3) | 0.001 (3) |
O2 | 0.071 (4) | 0.055 (4) | 0.043 (4) | 0.008 (3) | −0.004 (3) | −0.005 (3) |
O3 | 0.074 (4) | 0.054 (4) | 0.061 (5) | 0.013 (3) | −0.020 (3) | −0.028 (4) |
O4 | 0.049 (3) | 0.057 (4) | 0.055 (4) | 0.012 (3) | −0.009 (3) | −0.007 (3) |
O5 | 0.057 (7) | 0.105 (10) | 0.080 (11) | 0.003 (7) | −0.002 (8) | 0.013 (9) |
C19 | 0.042 (9) | 0.074 (11) | 0.088 (14) | 0.019 (8) | 0.050 (9) | 0.032 (11) |
O1W | 0.214 (12) | 0.196 (12) | 0.105 (11) | −0.067 (10) | 0.020 (9) | 0.009 (9) |
Mn1—O2 | 1.871 (7) | C9—H9B | 0.9700 |
Mn1—O1 | 1.906 (7) | C10—O3 | 1.292 (11) |
Mn1—N1 | 1.984 (7) | C10—C11 | 1.381 (14) |
Mn1—O3 | 2.027 (7) | C10—C15 | 1.426 (12) |
Mn1—N2 | 2.094 (7) | C11—C12 | 1.377 (14) |
Mn1—O4 | 2.324 (6) | C12—C13 | 1.432 (14) |
Br1—C2 | 1.888 (10) | C12—H12 | 0.9300 |
Br2—C4 | 1.931 (11) | C13—C14 | 1.348 (14) |
Br3—C11 | 1.905 (10) | C14—C15 | 1.367 (13) |
Br4—C13 | 1.900 (9) | C14—H14 | 0.9300 |
C1—O1 | 1.326 (10) | C15—C16 | 1.446 (13) |
C1—C6 | 1.415 (13) | C16—N2 | 1.295 (12) |
C1—C2 | 1.419 (15) | C16—H16 | 0.9300 |
C2—C3 | 1.370 (17) | C17—C18 | 1.494 (14) |
C3—C4 | 1.368 (18) | C17—N2 | 1.496 (12) |
C3—H3 | 0.9300 | C17—H17A | 0.9700 |
C4—C5 | 1.339 (17) | C17—H17B | 0.9700 |
C5—C6 | 1.414 (13) | C18—O4 | 1.388 (11) |
C5—H5 | 0.9300 | C18—H18A | 0.9700 |
C6—C7 | 1.453 (14) | C18—H18B | 0.9700 |
C7—N1 | 1.257 (12) | O5—C19 | 1.312 (9) |
C7—H7 | 0.9300 | O5—H5A | 0.8501 |
C8—N1 | 1.464 (13) | C19—H19A | 0.9600 |
C8—C9 | 1.508 (14) | C19—H19B | 0.9600 |
C8—H8A | 0.9700 | C19—H19C | 0.9600 |
C8—H8B | 0.9700 | O1W—H1WA | 0.8500 |
C9—O2 | 1.419 (11) | O1W—H1WB | 0.8500 |
C9—H9A | 0.9700 | ||
O2—Mn1—O1 | 174.3 (3) | H9A—C9—H9B | 108.5 |
O2—Mn1—N1 | 83.9 (3) | O3—C10—C11 | 122.4 (8) |
O1—Mn1—N1 | 90.6 (3) | O3—C10—C15 | 122.2 (8) |
O2—Mn1—O3 | 92.7 (3) | C11—C10—C15 | 115.2 (8) |
O1—Mn1—O3 | 90.6 (3) | C12—C11—C10 | 125.5 (9) |
N1—Mn1—O3 | 110.2 (3) | C12—C11—Br3 | 115.6 (8) |
O2—Mn1—N2 | 89.9 (3) | C10—C11—Br3 | 118.7 (7) |
O1—Mn1—N2 | 95.0 (3) | C11—C12—C13 | 115.9 (8) |
N1—Mn1—N2 | 162.6 (3) | C11—C12—H12 | 122.0 |
O3—Mn1—N2 | 86.2 (3) | C13—C12—H12 | 122.0 |
O2—Mn1—O4 | 92.3 (3) | C14—C13—C12 | 120.4 (8) |
O1—Mn1—O4 | 85.9 (3) | C14—C13—Br4 | 122.0 (8) |
N1—Mn1—O4 | 87.3 (3) | C12—C13—Br4 | 117.6 (7) |
O3—Mn1—O4 | 162.2 (3) | C13—C14—C15 | 121.9 (9) |
N2—Mn1—O4 | 76.7 (3) | C13—C14—H14 | 119.0 |
O1—C1—C6 | 124.4 (9) | C15—C14—H14 | 119.0 |
O1—C1—C2 | 117.9 (8) | C14—C15—C10 | 120.8 (8) |
C6—C1—C2 | 117.6 (8) | C14—C15—C16 | 115.7 (8) |
C3—C2—C1 | 121.4 (10) | C10—C15—C16 | 123.5 (8) |
C3—C2—Br1 | 119.9 (9) | N2—C16—C15 | 126.9 (8) |
C1—C2—Br1 | 118.7 (8) | N2—C16—H16 | 116.5 |
C4—C3—C2 | 118.7 (12) | C15—C16—H16 | 116.5 |
C4—C3—H3 | 120.6 | C18—C17—N2 | 109.8 (7) |
C2—C3—H3 | 120.6 | C18—C17—H17A | 109.7 |
C5—C4—C3 | 123.2 (11) | N2—C17—H17A | 109.7 |
C5—C4—Br2 | 120.1 (9) | C18—C17—H17B | 109.7 |
C3—C4—Br2 | 116.6 (10) | N2—C17—H17B | 109.7 |
C4—C5—C6 | 119.4 (10) | H17A—C17—H17B | 108.2 |
C4—C5—H5 | 120.3 | O4—C18—C17 | 111.2 (7) |
C6—C5—H5 | 120.3 | O4—C18—H18A | 109.4 |
C5—C6—C1 | 119.2 (9) | C17—C18—H18A | 109.4 |
C5—C6—C7 | 118.3 (9) | O4—C18—H18B | 109.4 |
C1—C6—C7 | 122.5 (8) | C17—C18—H18B | 109.4 |
N1—C7—C6 | 124.0 (8) | H18A—C18—H18B | 108.0 |
N1—C7—H7 | 118.0 | C7—N1—C8 | 119.9 (8) |
C6—C7—H7 | 118.0 | C7—N1—Mn1 | 129.1 (7) |
N1—C8—C9 | 107.0 (8) | C8—N1—Mn1 | 110.8 (6) |
N1—C8—H8A | 110.3 | C16—N2—C17 | 118.0 (7) |
C9—C8—H8A | 110.3 | C16—N2—Mn1 | 125.6 (6) |
N1—C8—H8B | 110.3 | C17—N2—Mn1 | 115.3 (6) |
C9—C8—H8B | 110.3 | C1—O1—Mn1 | 129.1 (6) |
H8A—C8—H8B | 108.6 | C9—O2—Mn1 | 112.2 (6) |
O2—C9—C8 | 107.3 (7) | C10—O3—Mn1 | 131.9 (6) |
O2—C9—H9A | 110.3 | C18—O4—Mn1 | 105.9 (5) |
C8—C9—H9A | 110.3 | C19—O5—H5A | 115.3 |
O2—C9—H9B | 110.3 | H1WA—O1W—H1WB | 94.9 |
C8—C9—H9B | 110.3 |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···Br1i | 0.85 | 3.04 | 3.893 (18) | 179 |
O1W—H1WA···O5 | 0.85 | 1.52 | 2.19 (2) | 134 |
Symmetry code: (i) x−1/4, −y+3/4, z+1/4. |
Experimental details
Crystal data | |
Chemical formula | C18H14Br4MnN2O4·0.5CH4O·H2O |
Mr | 730.89 |
Crystal system, space group | Orthorhombic, Fdd2 |
Temperature (K) | 293 |
a, b, c (Å) | 26.286 (4), 32.908 (5), 11.1681 (17) |
V (Å3) | 9661 (2) |
Z | 16 |
Radiation type | Mo Kα |
µ (mm−1) | 7.20 |
Crystal size (mm) | 0.18 × 0.14 × 0.13 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan SADABS (Sheldrick, 1996) |
Tmin, Tmax | 0.357, 0.455 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8149, 4075, 3143 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.133, 1.05 |
No. of reflections | 4075 |
No. of parameters | 290 |
No. of restraints | 20 |
H-atom treatment | H-atom parameters constrained |
w = 1/[σ2(Fo2) + (0.0654P)2 + 43.5887P] where P = (Fo2 + 2Fc2)/3 | |
Δρmax, Δρmin (e Å−3) | 1.09, −0.39 |
Absolute structure | Flack (1983), 1669 Friedel pairs |
Absolute structure parameter | 0.045 (19) |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1997).
Mn1—O2 | 1.871 (7) | Mn1—O3 | 2.027 (7) |
Mn1—O1 | 1.906 (7) | Mn1—N2 | 2.094 (7) |
Mn1—N1 | 1.984 (7) | Mn1—O4 | 2.324 (6) |
O2—Mn1—O1 | 174.3 (3) | N1—Mn1—N2 | 162.6 (3) |
O2—Mn1—N1 | 83.9 (3) | O3—Mn1—N2 | 86.2 (3) |
O1—Mn1—N1 | 90.6 (3) | O2—Mn1—O4 | 92.3 (3) |
O2—Mn1—O3 | 92.7 (3) | O1—Mn1—O4 | 85.9 (3) |
O1—Mn1—O3 | 90.6 (3) | N1—Mn1—O4 | 87.3 (3) |
N1—Mn1—O3 | 110.2 (3) | O3—Mn1—O4 | 162.2 (3) |
O2—Mn1—N2 | 89.9 (3) | N2—Mn1—O4 | 76.7 (3) |
O1—Mn1—N2 | 95.0 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···Br1i | 0.85 | 3.04 | 3.893 (18) | 179.3 |
O1W—H1WA···O5 | 0.85 | 1.52 | 2.19 (2) | 133.6 |
Symmetry code: (i) x−1/4, −y+3/4, z+1/4. |
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Interest on packing arrangements of halogenated compounds goes back many years to what Schmidt called the 'chloro effect', where the presence of chloro substituents on aromatic compounds frequently results in stacking arrangements with a short (ca 4 Å) crystallographic axis (Cohen et al., 1964; Zordan et al., 2005; Desiraju, 1989). The title compound, (I), contains the dibrominated ligand L- with two Br atoms accessible at the periphery of each ligand.
In (I) the MnIV atom is coordinated by two N and four O atoms from two different tridentate ligands L2- forming a distorted octahedral geometry (Fig. 1 and Table 1). The shortest Br···Br contacts (Zordan et al., 2005; Zaman et al., 2004; Sarma & Desiraju, 1986) are Br3i···Br3ii = 3.555 (5) Å, Br3i···Br4iii = 3.742 (5) Å, and Br4i···Br2iv = 3.631 (5) Å, [symmetry codes: (i) 1/2 - x, -1/2 - y, z; (ii) x, -1 + y, z; (iii) 1/4 + x,-1/4 - y, -1/4 + z; (iv) 1/4 - x, -3/4 - y, 1/4 + z]. The molecules of (I) are connected into a 3-D network through short Br···Br interactions, very strong O–H···O hydrogen bond and O–H···Br hydrogen bond (Table 2 and Fig. 2).