metal-organic compounds
Bis{μ-2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}bis[(thiocyanato)manganese(III)]
aCollege of Chemistry and Chemical Engineering, Henan University, Kaifeng 475003, People's Republic of China, and bCollege of Medicine, Henan University, Kaifeng 475003, People's Republic of China
*Correspondence e-mail: wangsb6688@sina.com
The reported structure is a monoclinic polymorph of the title compound, [Mn2(C16H14N2O2)2(NCS)2], which has been characterized previously in an orthorhombic form. Each MnIII atom is chelated by a tetradentate 2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolate ligand and by the N atom of a thiocyanate anion, in a square-pyramidal arrangement. The complexes form centrosymmetric dimers, with an Mn—O contact of 2.557 (3) Å trans to each thiocyanate anion, completing a distorted octahedral coordination geometry.
Experimental
Crystal data
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Refinement
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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/S1600536808003577/bi2278sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808003577/bi2278Isup2.hkl
A mixture of manganese(III) acetate (1 mmol) and N,N'-bis(2-hydroxybenzyl)ethylenediamine (1 mmol) in 20 ml me thanol was refluxed for several hours. The solution was then cooled and filtered, and the filtrate was left to evaporate at room temperature. Pink blocks of the title compound were obtained after 2 days with a yield of 12%. Elemental analysis calculated: C 53.72, H 3.67, N 5.49%; found: C 53.78, H 3.69, N 5.54%.
H atoms were placed in calculated positions and refined as riding with Uiso(H) = 1.2 Ueq(C). The phenyl rings were constrained to have regular hexagonal geometry.
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. Asymmetric unit drawn with 30% probability displacement ellipsoids for the non-H atoms. |
[Mn2(C16H14N2O2)2(NCS)2] | F(000) = 776 |
Mr = 758.62 | Dx = 1.387 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4497 reflections |
a = 9.0026 (10) Å | θ = 2.4–24.4° |
b = 14.0629 (16) Å | µ = 0.86 mm−1 |
c = 14.9884 (17) Å | T = 293 K |
β = 106.848 (1)° | Block, pink |
V = 1816.1 (4) Å3 | 0.43 × 0.28 × 0.22 mm |
Z = 2 |
Bruker APEXII CCD diffractometer | 3296 independent reflections |
Radiation source: fine-focus sealed tube | 2627 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
ϕ and ω scans | θmax = 25.3°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −10→10 |
Tmin = 0.710, Tmax = 0.834 | k = −16→16 |
13254 measured reflections | l = −18→17 |
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)] = 0.066 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.231 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.147P)2 + 2.2875P] where P = (Fo2 + 2Fc2)/3 |
3296 reflections | (Δ/σ)max = 0.013 |
193 parameters | Δρmax = 1.47 e Å−3 |
0 restraints | Δρmin = −0.33 e Å−3 |
[Mn2(C16H14N2O2)2(NCS)2] | V = 1816.1 (4) Å3 |
Mr = 758.62 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.0026 (10) Å | µ = 0.86 mm−1 |
b = 14.0629 (16) Å | T = 293 K |
c = 14.9884 (17) Å | 0.43 × 0.28 × 0.22 mm |
β = 106.848 (1)° |
Bruker APEXII CCD diffractometer | 3296 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 2627 reflections with I > 2σ(I) |
Tmin = 0.710, Tmax = 0.834 | Rint = 0.023 |
13254 measured reflections |
R[F2 > 2σ(F2)] = 0.066 | 0 restraints |
wR(F2) = 0.231 | H-atom parameters constrained |
S = 1.00 | Δρmax = 1.47 e Å−3 |
3296 reflections | Δρmin = −0.33 e Å−3 |
193 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 | ||
Mn1 | 0.64485 (8) | 0.01038 (5) | 0.10349 (5) | 0.0575 (3) | |
C1 | 0.8655 (4) | 0.1314 (2) | 0.0466 (3) | 0.0705 (14) | |
C2 | 0.9625 (5) | 0.1411 (3) | −0.0101 (3) | 0.093 (2) | |
H2 | 0.9766 | 0.0902 | −0.0465 | 0.112* | |
C3 | 1.0384 (5) | 0.2267 (4) | −0.0124 (4) | 0.124 (3) | |
H3 | 1.1033 | 0.2332 | −0.0503 | 0.148* | |
C4 | 1.0173 (6) | 0.3027 (3) | 0.0420 (4) | 0.146 (4) | |
H4 | 1.0681 | 0.3600 | 0.0404 | 0.175* | |
C5 | 0.9204 (6) | 0.2931 (3) | 0.0987 (4) | 0.128 (3) | |
H5 | 0.9063 | 0.3439 | 0.1351 | 0.153* | |
C6 | 0.8445 (5) | 0.2074 (3) | 0.1010 (3) | 0.0848 (17) | |
C7 | 0.9436 (7) | −0.0871 (3) | 0.2500 (4) | 0.0640 (12) | |
C8 | 0.7500 (9) | 0.2027 (5) | 0.1635 (4) | 0.098 (2) | |
H8 | 0.7466 | 0.2568 | 0.1986 | 0.117* | |
C9 | 0.5841 (12) | 0.1325 (5) | 0.2457 (5) | 0.117 (3) | |
H9A | 0.5629 | 0.1977 | 0.2592 | 0.140* | |
H9B | 0.6451 | 0.1027 | 0.3030 | 0.140* | |
C10 | 0.4299 (12) | 0.0775 (6) | 0.2049 (7) | 0.125 (3) | |
H10A | 0.3826 | 0.0616 | 0.2535 | 0.150* | |
H10B | 0.3571 | 0.1147 | 0.1574 | 0.150* | |
C11 | 0.4148 (7) | −0.0916 (5) | 0.1681 (4) | 0.0801 (16) | |
H11 | 0.3420 | −0.0952 | 0.2011 | 0.096* | |
C12 | 0.4489 (4) | −0.1778 (2) | 0.1251 (2) | 0.0686 (13) | |
C13 | 0.4001 (5) | −0.2635 (3) | 0.1534 (3) | 0.0921 (19) | |
H13 | 0.3496 | −0.2641 | 0.1994 | 0.110* | |
C14 | 0.4266 (6) | −0.3482 (2) | 0.1127 (3) | 0.106 (2) | |
H14 | 0.3939 | −0.4055 | 0.1316 | 0.128* | |
C15 | 0.5020 (5) | −0.34726 (18) | 0.0439 (3) | 0.0937 (19) | |
H15 | 0.5197 | −0.4040 | 0.0167 | 0.112* | |
C16 | 0.5508 (4) | −0.2616 (2) | 0.0156 (2) | 0.0723 (14) | |
H16 | 0.6013 | −0.2610 | −0.0304 | 0.087* | |
C17 | 0.5243 (4) | −0.17685 (18) | 0.0563 (2) | 0.0592 (11) | |
N1 | 0.6693 (7) | 0.1302 (3) | 0.1756 (3) | 0.0799 (13) | |
N2 | 0.4777 (6) | −0.0108 (3) | 0.1639 (3) | 0.0737 (12) | |
N3 | 0.8165 (6) | −0.0691 (4) | 0.2100 (4) | 0.0823 (13) | |
O1 | 0.7880 (4) | 0.0494 (3) | 0.0418 (3) | 0.0692 (9) | |
O2 | 0.5682 (4) | −0.0941 (2) | 0.0227 (2) | 0.0574 (8) | |
S1 | 1.11942 (18) | −0.11754 (13) | 0.30794 (13) | 0.0894 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.0669 (5) | 0.0504 (5) | 0.0598 (5) | 0.0061 (3) | 0.0259 (4) | −0.0011 (3) |
C1 | 0.057 (3) | 0.066 (3) | 0.080 (3) | −0.005 (2) | 0.005 (2) | 0.012 (3) |
C2 | 0.061 (3) | 0.089 (4) | 0.127 (6) | −0.007 (3) | 0.023 (3) | 0.022 (4) |
C3 | 0.076 (4) | 0.120 (7) | 0.159 (8) | −0.037 (4) | 0.010 (4) | 0.042 (6) |
C4 | 0.117 (7) | 0.112 (7) | 0.162 (9) | −0.061 (6) | −0.034 (6) | 0.028 (6) |
C5 | 0.133 (7) | 0.085 (5) | 0.123 (6) | −0.041 (5) | −0.029 (5) | 0.002 (4) |
C6 | 0.091 (4) | 0.068 (3) | 0.075 (4) | −0.012 (3) | −0.009 (3) | −0.001 (3) |
C7 | 0.080 (3) | 0.051 (3) | 0.066 (3) | 0.006 (2) | 0.029 (3) | 0.010 (2) |
C8 | 0.130 (6) | 0.064 (4) | 0.071 (4) | 0.009 (4) | −0.015 (4) | −0.016 (3) |
C9 | 0.190 (9) | 0.082 (5) | 0.090 (5) | 0.030 (5) | 0.058 (5) | −0.015 (4) |
C10 | 0.169 (8) | 0.110 (6) | 0.130 (6) | 0.039 (6) | 0.098 (6) | −0.011 (5) |
C11 | 0.079 (3) | 0.105 (5) | 0.067 (3) | 0.013 (3) | 0.037 (3) | 0.023 (3) |
C12 | 0.061 (3) | 0.079 (3) | 0.066 (3) | 0.000 (2) | 0.018 (2) | 0.020 (3) |
C13 | 0.090 (4) | 0.102 (5) | 0.084 (4) | −0.019 (4) | 0.025 (3) | 0.030 (4) |
C14 | 0.111 (5) | 0.073 (4) | 0.124 (6) | −0.021 (4) | 0.017 (5) | 0.035 (4) |
C15 | 0.090 (4) | 0.058 (3) | 0.126 (6) | 0.000 (3) | 0.021 (4) | 0.010 (3) |
C16 | 0.070 (3) | 0.053 (3) | 0.093 (4) | 0.003 (2) | 0.021 (3) | 0.005 (2) |
C17 | 0.055 (2) | 0.054 (2) | 0.068 (3) | 0.001 (2) | 0.017 (2) | 0.006 (2) |
N1 | 0.114 (4) | 0.061 (3) | 0.061 (3) | 0.016 (3) | 0.020 (2) | −0.006 (2) |
N2 | 0.085 (3) | 0.079 (3) | 0.070 (3) | 0.015 (2) | 0.043 (2) | 0.006 (2) |
N3 | 0.085 (3) | 0.078 (3) | 0.082 (3) | 0.016 (3) | 0.020 (3) | 0.011 (2) |
O1 | 0.069 (2) | 0.060 (2) | 0.084 (2) | −0.0027 (16) | 0.0313 (18) | −0.0004 (17) |
O2 | 0.0661 (19) | 0.0491 (16) | 0.0641 (18) | 0.0026 (14) | 0.0302 (15) | 0.0026 (14) |
S1 | 0.0697 (9) | 0.0979 (12) | 0.1010 (12) | 0.0079 (8) | 0.0256 (8) | 0.0270 (9) |
Mn1—O1 | 1.874 (3) | C9—N1 | 1.469 (9) |
Mn1—O2 | 1.902 (3) | C9—C10 | 1.552 (13) |
Mn1—N1 | 1.979 (4) | C9—H9A | 0.970 |
Mn1—N2 | 1.990 (5) | C9—H9B | 0.970 |
Mn1—N3 | 2.181 (5) | C10—N2 | 1.503 (8) |
Mn1—O2i | 2.557 (3) | C10—H10A | 0.970 |
C1—O1 | 1.339 (4) | C10—H10B | 0.970 |
C1—C2 | 1.390 | C11—N2 | 1.280 (8) |
C1—C6 | 1.390 | C11—C12 | 1.447 (7) |
C2—C3 | 1.390 | C11—H11 | 0.930 |
C2—H2 | 0.930 | C12—C13 | 1.390 |
C3—C4 | 1.390 | C12—C17 | 1.390 |
C3—H3 | 0.930 | C13—C14 | 1.390 |
C4—C5 | 1.390 | C13—H13 | 0.930 |
C4—H4 | 0.930 | C14—C15 | 1.390 |
C5—C6 | 1.390 | C14—H14 | 0.930 |
C5—H5 | 0.930 | C15—C16 | 1.390 |
C6—C8 | 1.439 (9) | C15—H15 | 0.930 |
C7—N3 | 1.155 (7) | C16—C17 | 1.390 |
C7—S1 | 1.627 (6) | C16—H16 | 0.930 |
C8—N1 | 1.295 (9) | C17—O2 | 1.371 (4) |
C8—H8 | 0.930 | ||
O1—Mn1—O2 | 94.95 (14) | N1—C9—H9B | 110.2 |
O1—Mn1—N1 | 92.1 (2) | C10—C9—H9B | 110.2 |
O1—Mn1—N2 | 170.90 (17) | H9A—C9—H9B | 108.5 |
O1—Mn1—N3 | 93.94 (18) | N2—C10—C9 | 104.1 (6) |
O1—Mn1—O2i | 88.62 (15) | N2—C10—H10A | 110.9 |
O2—Mn1—N1 | 165.40 (19) | C9—C10—H10A | 110.9 |
O2—Mn1—N2 | 89.51 (17) | N2—C10—H10B | 110.9 |
O2—Mn1—N3 | 96.85 (17) | C9—C10—H10B | 110.9 |
O2—Mn1—O2i | 80.14 (14) | H10A—C10—H10B | 109.0 |
N1—Mn1—N2 | 81.9 (2) | N2—C11—C12 | 124.6 (5) |
N1—Mn1—N3 | 95.4 (2) | N2—C11—H11 | 117.7 |
N1—Mn1—O2i | 87.29 (16) | C12—C11—H11 | 117.7 |
N2—Mn1—N3 | 93.4 (2) | C13—C12—C17 | 120.0 |
N2—Mn1—O2i | 84.35 (17) | C13—C12—C11 | 117.6 (3) |
N3—Mn1—O2i | 176.24 (17) | C17—C12—C11 | 122.3 (3) |
O1—C1—C2 | 117.4 (3) | C12—C13—C14 | 120.0 |
O1—C1—C6 | 122.4 (3) | C12—C13—H13 | 120.0 |
C2—C1—C6 | 120.0 | C14—C13—H13 | 120.0 |
C3—C2—C1 | 120.0 | C13—C14—C15 | 120.0 |
C3—C2—H2 | 120.0 | C13—C14—H14 | 120.0 |
C1—C2—H2 | 120.0 | C15—C14—H14 | 120.0 |
C2—C3—C4 | 120.0 | C14—C15—C16 | 120.0 |
C2—C3—H3 | 120.0 | C14—C15—H15 | 120.0 |
C4—C3—H3 | 120.0 | C16—C15—H15 | 120.0 |
C5—C4—C3 | 120.0 | C17—C16—C15 | 120.0 |
C5—C4—H4 | 120.0 | C17—C16—H16 | 120.0 |
C3—C4—H4 | 120.0 | C15—C16—H16 | 120.0 |
C4—C5—C6 | 120.0 | O2—C17—C16 | 117.5 (2) |
C4—C5—H5 | 120.0 | O2—C17—C12 | 122.4 (2) |
C6—C5—H5 | 120.0 | C16—C17—C12 | 120.0 |
C5—C6—C1 | 120.0 | C8—N1—C9 | 120.8 (6) |
C5—C6—C8 | 116.3 (4) | C8—N1—Mn1 | 124.9 (4) |
C1—C6—C8 | 123.6 (4) | C9—N1—Mn1 | 114.2 (4) |
N3—C7—S1 | 177.1 (5) | C11—N2—C10 | 122.0 (6) |
N1—C8—C6 | 126.1 (5) | C11—N2—Mn1 | 124.0 (4) |
N1—C8—H8 | 117.0 | C10—N2—Mn1 | 114.0 (5) |
C6—C8—H8 | 117.0 | C7—N3—Mn1 | 151.3 (5) |
N1—C9—C10 | 107.5 (6) | C1—O1—Mn1 | 130.4 (3) |
N1—C9—H9A | 110.2 | C17—O2—Mn1 | 120.8 (2) |
C10—C9—H9A | 110.2 |
Symmetry code: (i) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [Mn2(C16H14N2O2)2(NCS)2] |
Mr | 758.62 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 9.0026 (10), 14.0629 (16), 14.9884 (17) |
β (°) | 106.848 (1) |
V (Å3) | 1816.1 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.86 |
Crystal size (mm) | 0.43 × 0.28 × 0.22 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.710, 0.834 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13254, 3296, 2627 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.601 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.066, 0.231, 1.00 |
No. of reflections | 3296 |
No. of parameters | 193 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.47, −0.33 |
Computer programs: APEX2 (Bruker, 2004), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Mn1—O1 | 1.874 (3) | Mn1—N2 | 1.990 (5) |
Mn1—O2 | 1.902 (3) | Mn1—N3 | 2.181 (5) |
Mn1—N1 | 1.979 (4) | Mn1—O2i | 2.557 (3) |
O1—Mn1—O2 | 94.95 (14) | O2—Mn1—O2i | 80.14 (14) |
O1—Mn1—N1 | 92.1 (2) | N1—Mn1—N2 | 81.9 (2) |
O1—Mn1—N2 | 170.90 (17) | N1—Mn1—N3 | 95.4 (2) |
O1—Mn1—N3 | 93.94 (18) | N1—Mn1—O2i | 87.29 (16) |
O1—Mn1—O2i | 88.62 (15) | N2—Mn1—N3 | 93.4 (2) |
O2—Mn1—N1 | 165.40 (19) | N2—Mn1—O2i | 84.35 (17) |
O2—Mn1—N2 | 89.51 (17) | N3—Mn1—O2i | 176.24 (17) |
O2—Mn1—N3 | 96.85 (17) |
Symmetry code: (i) −x+1, −y, −z. |
Acknowledgements
The authors are grateful for financial support from Henan University (grant No. 05YBGG013).
References
Bruker (2001). SAINT-Plus and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
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As shown in Fig. 1, the Mn atom is chelated by two N and two O atoms of the N,N'-ethylenebis(salicylideneamine) ligand and by the N atom of the thiocyanate anion in the apical site. The Mn—N and Mn—O bond lengths are in the range of 1.979 (4)–2.181 (5) and 1.874 (3)–1.902 (3) %A, respectively (Table 1).