metal-organic compounds
Aqua{2,2-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}(3-nitrobenzoato)manganese(III)
aDepartment of Chemistry, SN College, Varkala, Kerala 695 145, India, bDepartment of Chemistry, University of Kerala, Thiruvananthapuram, Kerala 695 581, India, and cDepartment of Chemistry, College of William and Mary, PO Box 8795, Williamsburg, VA 23187-8795, USA
*Correspondence e-mail: dasthampi@hotmail.com
The title compound, [Mn(C16H14N2O2)(C7H4NO4)(H2O)], is a Jahn–Teller-distorted manganese(III) monomer with an octahedral geometry. The tetradentate Schiff base accommodates the MnIII ion at the centre of a nearly planar square. The axial positions are occupied by a monodentate carboxylate group and a water molecule. Adjacent monomers interact through hydrogen bonding between the noncoordinated C=O group of the carboxylate and the coordinated water molecule to produce chains extending parallel to the b axis.
Related literature
For related literature, see: Christou (1989); Pecoraro & Hsieh (2000); Yocum & Pecoraro (2004); Zhang & Janiak (2001); Zouni et al. (2001); Aurangzeb et al. (1994); Hulme et al. (1997).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) and XSHELL (Bruker, 2004); molecular graphics: ORTEP-3 (Farrugia, 1997) and Mercury (Macrae et al. 2006); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808019715/si2096sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808019715/si2096Isup2.hkl
To a solution of Mn(m—NO2C6H4CO2)2.2H2O (1.00 g, 2.36 mmol) and salicylaldehyde (0.58 g, 4.72 mmol) in methanol (40 ml), ethane-1,2-diamine (0.14 g, 2.36 mmol) was added. The solution was stirred for 20 minutes, filtered and left to evaporation in an open conical flask. Brown crystals were deposited in 2–3 days. These were collected by filtration, washed with methanol, and dried in air. Yield of the title compound was 0.82 g (75.50%) based on manganese.
All hydrogen atoms were initially located in the difference map and then were placed in theoretical positions using a riding model for all but the water H atoms which were allowed to rotate freely, O–H = 0.77 and 0.84 Å. Csp2–H = 0.95 Å, Csp3–H = 0.99 Å, Uiso(H) = 1.2Ueq(C,O).
Data collection: APEX2 (Bruker, 2004); cell
SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) and XSHELL (Bruker, 2004); molecular graphics: ORTEP-3 (Farrugia, 1997) and Mercury (Macrae et al. 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).[Mn(C16H14N2O2)(C7H4NO4)(H2O)] | F(000) = 1040 |
Mr = 505.36 | Dx = 1.620 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54178 Å |
a = 6.7297 (1) Å | Cell parameters from 256 reflections |
b = 10.5793 (2) Å | θ = 9.7–70.9° |
c = 29.228 (5) Å | µ = 5.66 mm−1 |
β = 95.188 (1)° | T = 100 K |
V = 2072.4 (4) Å3 | Plate, brown |
Z = 4 | 0.35 × 0.29 × 0.09 mm |
Bruker SMART APEXII CCD diffractometer | 3640 independent reflections |
Radiation source: fine-focus sealed tube | 3492 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.046 |
ω and ψ scans | θmax = 67.0°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2004) | h = −7→7 |
Tmin = 0.245, Tmax = 0.624 | k = −10→12 |
21257 measured reflections | l = −31→34 |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.092 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0418P)2 + 2.1055P] where P = (Fo2 + 2Fc2)/3 |
3640 reflections | (Δ/σ)max < 0.001 |
308 parameters | Δρmax = 0.35 e Å−3 |
0 restraints | Δρmin = −0.51 e Å−3 |
[Mn(C16H14N2O2)(C7H4NO4)(H2O)] | V = 2072.4 (4) Å3 |
Mr = 505.36 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 6.7297 (1) Å | µ = 5.66 mm−1 |
b = 10.5793 (2) Å | T = 100 K |
c = 29.228 (5) Å | 0.35 × 0.29 × 0.09 mm |
β = 95.188 (1)° |
Bruker SMART APEXII CCD diffractometer | 3640 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2004) | 3492 reflections with I > 2σ(I) |
Tmin = 0.245, Tmax = 0.624 | Rint = 0.046 |
21257 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.092 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.35 e Å−3 |
3640 reflections | Δρmin = −0.51 e Å−3 |
308 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 | −0.00146 (5) | 0.54194 (3) | 0.229187 (11) | 0.01142 (12) | |
O1 | −0.2188 (2) | 0.55831 (14) | 0.18400 (5) | 0.0155 (3) | |
O2 | −0.1396 (2) | 0.45279 (14) | 0.27355 (5) | 0.0147 (3) | |
O3 | 0.0816 (2) | 0.36457 (14) | 0.20036 (5) | 0.0171 (3) | |
O4 | 0.3542 (2) | 0.32126 (15) | 0.16477 (5) | 0.0197 (4) | |
O5 | 0.2710 (3) | 0.15274 (18) | 0.00870 (6) | 0.0311 (4) | |
O6 | −0.0245 (3) | 0.12490 (17) | −0.02568 (5) | 0.0282 (4) | |
O7 | −0.0810 (2) | 0.73579 (15) | 0.26027 (5) | 0.0190 (3) | |
H1W | 0.0052 | 0.7545 | 0.2818 | 0.023* | |
H2W | −0.1592 | 0.7863 | 0.2531 | 0.023* | |
N1 | 0.1747 (3) | 0.63243 (16) | 0.18849 (6) | 0.0133 (4) | |
N2 | 0.2479 (3) | 0.54511 (16) | 0.27161 (6) | 0.0129 (4) | |
N3 | 0.0896 (3) | 0.15170 (18) | 0.00848 (6) | 0.0220 (5) | |
C1 | −0.2066 (3) | 0.5574 (2) | 0.13906 (8) | 0.0149 (5) | |
C2 | −0.3747 (3) | 0.5194 (2) | 0.11019 (8) | 0.0171 (5) | |
H2 | −0.4930 | 0.4950 | 0.1233 | 0.020* | |
C3 | −0.3700 (4) | 0.5173 (2) | 0.06299 (8) | 0.0223 (5) | |
H3 | −0.4848 | 0.4907 | 0.0442 | 0.027* | |
C4 | −0.1991 (4) | 0.5536 (2) | 0.04252 (8) | 0.0239 (5) | |
H4 | −0.1976 | 0.5519 | 0.0101 | 0.029* | |
C5 | −0.0333 (4) | 0.5917 (2) | 0.06989 (8) | 0.0202 (5) | |
H5 | 0.0831 | 0.6167 | 0.0561 | 0.024* | |
C6 | −0.0331 (3) | 0.5945 (2) | 0.11816 (7) | 0.0150 (4) | |
C7 | 0.1445 (3) | 0.63864 (19) | 0.14441 (7) | 0.0141 (4) | |
H7 | 0.2464 | 0.6748 | 0.1281 | 0.017* | |
C8 | 0.3601 (3) | 0.6801 (2) | 0.21297 (7) | 0.0159 (5) | |
H8A | 0.3362 | 0.7622 | 0.2278 | 0.019* | |
H8B | 0.4639 | 0.6920 | 0.1914 | 0.019* | |
C9 | 0.4256 (3) | 0.5815 (2) | 0.24879 (7) | 0.0153 (4) | |
H9A | 0.4818 | 0.5070 | 0.2341 | 0.018* | |
H9B | 0.5291 | 0.6168 | 0.2715 | 0.018* | |
C10 | 0.2631 (3) | 0.5163 (2) | 0.31447 (7) | 0.0138 (4) | |
H10 | 0.3899 | 0.5276 | 0.3310 | 0.017* | |
C11 | 0.1053 (3) | 0.46869 (19) | 0.33948 (7) | 0.0143 (4) | |
C12 | 0.1515 (4) | 0.4424 (2) | 0.38667 (8) | 0.0173 (5) | |
H12 | 0.2813 | 0.4611 | 0.4006 | 0.021* | |
C13 | 0.0131 (4) | 0.3906 (2) | 0.41291 (7) | 0.0197 (5) | |
H13 | 0.0454 | 0.3749 | 0.4447 | 0.024* | |
C14 | −0.1764 (4) | 0.3614 (2) | 0.39192 (8) | 0.0184 (5) | |
H14 | −0.2734 | 0.3258 | 0.4098 | 0.022* | |
C15 | −0.2250 (3) | 0.3835 (2) | 0.34569 (7) | 0.0157 (4) | |
H15 | −0.3541 | 0.3615 | 0.3322 | 0.019* | |
C16 | −0.0877 (3) | 0.43777 (19) | 0.31824 (7) | 0.0134 (4) | |
C17 | 0.1704 (3) | 0.32348 (19) | 0.16688 (7) | 0.0142 (4) | |
C18 | 0.0387 (3) | 0.26862 (19) | 0.12698 (7) | 0.0140 (4) | |
C19 | −0.1613 (3) | 0.2428 (2) | 0.13095 (8) | 0.0173 (5) | |
H19 | −0.2185 | 0.2639 | 0.1585 | 0.021* | |
C20 | −0.2791 (4) | 0.1861 (2) | 0.09498 (8) | 0.0200 (5) | |
H20 | −0.4151 | 0.1676 | 0.0984 | 0.024* | |
C21 | −0.1988 (4) | 0.1569 (2) | 0.05438 (8) | 0.0197 (5) | |
H21 | −0.2780 | 0.1188 | 0.0296 | 0.024* | |
C22 | −0.0006 (3) | 0.1846 (2) | 0.05094 (7) | 0.0166 (5) | |
C23 | 0.1219 (3) | 0.2390 (2) | 0.08636 (7) | 0.0155 (4) | |
H23 | 0.2586 | 0.2556 | 0.0830 | 0.019* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.0138 (2) | 0.01245 (19) | 0.00759 (19) | −0.00076 (13) | −0.00106 (13) | 0.00132 (12) |
O1 | 0.0173 (8) | 0.0190 (8) | 0.0097 (8) | 0.0005 (6) | −0.0012 (6) | 0.0015 (6) |
O2 | 0.0182 (8) | 0.0155 (8) | 0.0099 (7) | −0.0004 (6) | −0.0023 (6) | 0.0019 (6) |
O3 | 0.0262 (9) | 0.0129 (8) | 0.0121 (8) | 0.0011 (6) | 0.0018 (6) | −0.0013 (6) |
O4 | 0.0206 (9) | 0.0241 (9) | 0.0137 (8) | −0.0041 (7) | −0.0018 (6) | 0.0007 (6) |
O5 | 0.0317 (11) | 0.0424 (11) | 0.0198 (9) | 0.0022 (8) | 0.0059 (7) | −0.0056 (8) |
O6 | 0.0443 (11) | 0.0275 (9) | 0.0113 (8) | −0.0043 (8) | −0.0053 (7) | −0.0036 (7) |
O7 | 0.0211 (9) | 0.0181 (8) | 0.0161 (8) | 0.0047 (6) | −0.0063 (6) | −0.0028 (6) |
N1 | 0.0163 (9) | 0.0107 (9) | 0.0128 (9) | 0.0004 (7) | 0.0004 (7) | 0.0000 (7) |
N2 | 0.0162 (10) | 0.0096 (9) | 0.0128 (9) | 0.0004 (7) | −0.0003 (7) | −0.0009 (7) |
N3 | 0.0357 (13) | 0.0190 (10) | 0.0109 (10) | 0.0011 (9) | −0.0007 (8) | −0.0005 (8) |
C1 | 0.0208 (12) | 0.0104 (10) | 0.0130 (11) | 0.0025 (8) | −0.0016 (9) | 0.0014 (8) |
C2 | 0.0195 (12) | 0.0153 (11) | 0.0156 (11) | 0.0006 (9) | −0.0025 (9) | 0.0019 (9) |
C3 | 0.0275 (13) | 0.0222 (12) | 0.0153 (12) | 0.0000 (10) | −0.0081 (9) | −0.0016 (9) |
C4 | 0.0343 (14) | 0.0269 (13) | 0.0096 (11) | 0.0018 (10) | −0.0026 (10) | −0.0007 (9) |
C5 | 0.0283 (13) | 0.0180 (12) | 0.0146 (11) | 0.0027 (10) | 0.0036 (9) | 0.0015 (9) |
C6 | 0.0224 (12) | 0.0106 (10) | 0.0117 (10) | 0.0024 (9) | −0.0010 (8) | 0.0009 (8) |
C7 | 0.0201 (12) | 0.0076 (10) | 0.0151 (11) | 0.0013 (8) | 0.0042 (8) | 0.0016 (8) |
C8 | 0.0192 (11) | 0.0124 (11) | 0.0160 (11) | −0.0031 (8) | 0.0008 (9) | −0.0005 (8) |
C9 | 0.0142 (11) | 0.0150 (11) | 0.0165 (11) | −0.0004 (9) | 0.0001 (8) | −0.0003 (9) |
C10 | 0.0172 (11) | 0.0099 (10) | 0.0131 (11) | 0.0003 (8) | −0.0042 (8) | −0.0022 (8) |
C11 | 0.0215 (12) | 0.0105 (10) | 0.0106 (11) | 0.0011 (8) | −0.0011 (8) | −0.0017 (8) |
C12 | 0.0244 (12) | 0.0136 (11) | 0.0128 (11) | 0.0005 (9) | −0.0043 (9) | −0.0009 (8) |
C13 | 0.0337 (14) | 0.0159 (11) | 0.0088 (10) | −0.0018 (10) | −0.0022 (9) | 0.0000 (8) |
C14 | 0.0281 (13) | 0.0134 (11) | 0.0141 (11) | −0.0028 (9) | 0.0046 (9) | −0.0009 (8) |
C15 | 0.0201 (11) | 0.0128 (10) | 0.0140 (11) | 0.0004 (9) | −0.0002 (8) | −0.0010 (8) |
C16 | 0.0222 (12) | 0.0083 (10) | 0.0093 (10) | 0.0026 (8) | −0.0001 (8) | −0.0011 (8) |
C17 | 0.0230 (13) | 0.0092 (10) | 0.0100 (10) | −0.0020 (8) | −0.0008 (8) | 0.0021 (8) |
C18 | 0.0215 (12) | 0.0091 (10) | 0.0108 (10) | 0.0015 (8) | −0.0024 (8) | 0.0013 (8) |
C19 | 0.0218 (12) | 0.0135 (11) | 0.0166 (11) | 0.0022 (9) | 0.0022 (9) | 0.0004 (8) |
C20 | 0.0165 (11) | 0.0191 (12) | 0.0237 (12) | −0.0005 (9) | −0.0024 (9) | 0.0009 (9) |
C21 | 0.0260 (13) | 0.0158 (11) | 0.0158 (11) | −0.0019 (9) | −0.0073 (9) | −0.0013 (9) |
C22 | 0.0260 (12) | 0.0124 (11) | 0.0108 (10) | 0.0019 (9) | −0.0016 (9) | −0.0003 (8) |
C23 | 0.0191 (11) | 0.0129 (10) | 0.0140 (11) | −0.0006 (8) | −0.0018 (8) | 0.0014 (8) |
Mn1—O1 | 1.8879 (15) | C7—H7 | 0.9500 |
Mn1—O2 | 1.9113 (15) | C8—C9 | 1.515 (3) |
Mn1—N2 | 1.9946 (18) | C8—H8A | 0.9900 |
Mn1—N1 | 1.9980 (18) | C8—H8B | 0.9900 |
Mn1—O3 | 2.1513 (15) | C9—H9A | 0.9900 |
Mn1—O7 | 2.3250 (16) | C9—H9B | 0.9900 |
O1—C1 | 1.324 (3) | C10—C11 | 1.434 (3) |
O2—C16 | 1.331 (3) | C10—H10 | 0.9500 |
O3—C17 | 1.269 (3) | C11—C12 | 1.414 (3) |
O4—C17 | 1.244 (3) | C11—C16 | 1.426 (3) |
O5—N3 | 1.220 (3) | C12—C13 | 1.373 (3) |
O6—N3 | 1.236 (3) | C12—H12 | 0.9500 |
O7—H1W | 0.8400 | C13—C14 | 1.399 (3) |
O7—H2W | 0.7659 | C13—H13 | 0.9500 |
N1—C7 | 1.288 (3) | C14—C15 | 1.381 (3) |
N1—C8 | 1.471 (3) | C14—H14 | 0.9500 |
N2—C10 | 1.284 (3) | C15—C16 | 1.400 (3) |
N2—C9 | 1.472 (3) | C15—H15 | 0.9500 |
N3—C22 | 1.472 (3) | C17—C18 | 1.515 (3) |
C1—C2 | 1.408 (3) | C18—C19 | 1.389 (3) |
C1—C6 | 1.421 (3) | C18—C23 | 1.393 (3) |
C2—C3 | 1.383 (3) | C19—C20 | 1.394 (3) |
C2—H2 | 0.9500 | C19—H19 | 0.9500 |
C3—C4 | 1.397 (4) | C20—C21 | 1.383 (3) |
C3—H3 | 0.9500 | C20—H20 | 0.9500 |
C4—C5 | 1.374 (3) | C21—C22 | 1.378 (3) |
C4—H4 | 0.9500 | C21—H21 | 0.9500 |
C5—C6 | 1.411 (3) | C22—C23 | 1.389 (3) |
C5—H5 | 0.9500 | C23—H23 | 0.9500 |
C6—C7 | 1.439 (3) | ||
O1—Mn1—O2 | 97.25 (7) | C9—C8—H8A | 110.5 |
O1—Mn1—N2 | 171.26 (7) | N1—C8—H8B | 110.5 |
O2—Mn1—N2 | 91.15 (7) | C9—C8—H8B | 110.5 |
O1—Mn1—N1 | 90.20 (7) | H8A—C8—H8B | 108.7 |
O2—Mn1—N1 | 172.54 (7) | N2—C9—C8 | 107.21 (17) |
N2—Mn1—N1 | 81.42 (7) | N2—C9—H9A | 110.3 |
O1—Mn1—O3 | 91.05 (6) | C8—C9—H9A | 110.3 |
O2—Mn1—O3 | 89.70 (6) | N2—C9—H9B | 110.3 |
N2—Mn1—O3 | 91.40 (7) | C8—C9—H9B | 110.3 |
N1—Mn1—O3 | 89.75 (7) | H9A—C9—H9B | 108.5 |
O1—Mn1—O7 | 90.07 (6) | N2—C10—C11 | 125.7 (2) |
O2—Mn1—O7 | 91.54 (6) | N2—C10—H10 | 117.2 |
N2—Mn1—O7 | 87.29 (6) | C11—C10—H10 | 117.2 |
N1—Mn1—O7 | 88.85 (6) | C12—C11—C16 | 119.4 (2) |
O3—Mn1—O7 | 178.21 (6) | C12—C11—C10 | 117.3 (2) |
C1—O1—Mn1 | 125.44 (14) | C16—C11—C10 | 123.1 (2) |
C16—O2—Mn1 | 128.63 (14) | C13—C12—C11 | 121.5 (2) |
C17—O3—Mn1 | 139.29 (14) | C13—C12—H12 | 119.2 |
Mn1—O7—H1W | 109.5 | C11—C12—H12 | 119.2 |
Mn1—O7—H2W | 133.3 | C12—C13—C14 | 118.7 (2) |
H1W—O7—H2W | 116.8 | C12—C13—H13 | 120.6 |
C7—N1—C8 | 121.31 (19) | C14—C13—H13 | 120.6 |
C7—N1—Mn1 | 124.86 (15) | C15—C14—C13 | 121.2 (2) |
C8—N1—Mn1 | 113.44 (13) | C15—C14—H14 | 119.4 |
C10—N2—C9 | 120.50 (19) | C13—C14—H14 | 119.4 |
C10—N2—Mn1 | 126.20 (16) | C14—C15—C16 | 121.3 (2) |
C9—N2—Mn1 | 113.27 (13) | C14—C15—H15 | 119.3 |
O5—N3—O6 | 123.7 (2) | C16—C15—H15 | 119.3 |
O5—N3—C22 | 118.83 (19) | O2—C16—C15 | 118.9 (2) |
O6—N3—C22 | 117.5 (2) | O2—C16—C11 | 123.2 (2) |
O1—C1—C2 | 118.6 (2) | C15—C16—C11 | 117.8 (2) |
O1—C1—C6 | 123.5 (2) | O4—C17—O3 | 125.8 (2) |
C2—C1—C6 | 117.9 (2) | O4—C17—C18 | 118.00 (19) |
C3—C2—C1 | 120.9 (2) | O3—C17—C18 | 116.17 (19) |
C3—C2—H2 | 119.6 | C19—C18—C23 | 119.6 (2) |
C1—C2—H2 | 119.6 | C19—C18—C17 | 121.01 (19) |
C2—C3—C4 | 121.1 (2) | C23—C18—C17 | 119.3 (2) |
C2—C3—H3 | 119.4 | C18—C19—C20 | 120.8 (2) |
C4—C3—H3 | 119.4 | C18—C19—H19 | 119.6 |
C5—C4—C3 | 119.2 (2) | C20—C19—H19 | 119.6 |
C5—C4—H4 | 120.4 | C21—C20—C19 | 120.3 (2) |
C3—C4—H4 | 120.4 | C21—C20—H20 | 119.9 |
C4—C5—C6 | 121.0 (2) | C19—C20—H20 | 119.9 |
C4—C5—H5 | 119.5 | C22—C21—C20 | 118.1 (2) |
C6—C5—H5 | 119.5 | C22—C21—H21 | 121.0 |
C5—C6—C1 | 119.9 (2) | C20—C21—H21 | 121.0 |
C5—C6—C7 | 117.7 (2) | C21—C22—C23 | 123.2 (2) |
C1—C6—C7 | 122.4 (2) | C21—C22—N3 | 119.2 (2) |
N1—C7—C6 | 124.4 (2) | C23—C22—N3 | 117.6 (2) |
N1—C7—H7 | 117.8 | C22—C23—C18 | 118.1 (2) |
C6—C7—H7 | 117.8 | C22—C23—H23 | 121.0 |
N1—C8—C9 | 106.32 (17) | C18—C23—H23 | 121.0 |
N1—C8—H8A | 110.5 | ||
O2—Mn1—O1—C1 | −146.55 (16) | C2—C1—C6—C7 | 178.0 (2) |
N2—Mn1—O1—C1 | 49.5 (5) | C8—N1—C7—C6 | −179.76 (19) |
N1—Mn1—O1—C1 | 33.04 (17) | Mn1—N1—C7—C6 | 7.9 (3) |
O3—Mn1—O1—C1 | −56.72 (16) | C5—C6—C7—N1 | −171.5 (2) |
O7—Mn1—O1—C1 | 121.89 (16) | C1—C6—C7—N1 | 10.2 (3) |
O1—Mn1—O2—C16 | −161.93 (17) | C7—N1—C8—C9 | −136.1 (2) |
N2—Mn1—O2—C16 | 15.66 (17) | Mn1—N1—C8—C9 | 37.1 (2) |
N1—Mn1—O2—C16 | 21.3 (6) | C10—N2—C9—C8 | −145.69 (19) |
O3—Mn1—O2—C16 | 107.05 (17) | Mn1—N2—C9—C8 | 35.9 (2) |
O7—Mn1—O2—C16 | −71.66 (17) | N1—C8—C9—N2 | −45.6 (2) |
O1—Mn1—O3—C17 | 78.3 (2) | C9—N2—C10—C11 | −174.05 (19) |
O2—Mn1—O3—C17 | 175.5 (2) | Mn1—N2—C10—C11 | 4.1 (3) |
N2—Mn1—O3—C17 | −93.3 (2) | N2—C10—C11—C12 | 180.0 (2) |
N1—Mn1—O3—C17 | −11.9 (2) | N2—C10—C11—C16 | 5.2 (3) |
O7—Mn1—O3—C17 | −50.6 (19) | C16—C11—C12—C13 | −1.6 (3) |
O1—Mn1—N1—C7 | −24.13 (18) | C10—C11—C12—C13 | −176.7 (2) |
O2—Mn1—N1—C7 | 152.7 (5) | C11—C12—C13—C14 | 1.2 (3) |
N2—Mn1—N1—C7 | 158.36 (18) | C12—C13—C14—C15 | 0.2 (3) |
O3—Mn1—N1—C7 | 66.92 (18) | C13—C14—C15—C16 | −1.0 (3) |
O7—Mn1—N1—C7 | −114.20 (18) | Mn1—O2—C16—C15 | 171.22 (14) |
O1—Mn1—N1—C8 | 162.98 (14) | Mn1—O2—C16—C11 | −11.9 (3) |
O2—Mn1—N1—C8 | −20.2 (6) | C14—C15—C16—O2 | 177.58 (19) |
N2—Mn1—N1—C8 | −14.53 (14) | C14—C15—C16—C11 | 0.5 (3) |
O3—Mn1—N1—C8 | −105.98 (14) | C12—C11—C16—O2 | −176.14 (19) |
O7—Mn1—N1—C8 | 72.91 (14) | C10—C11—C16—O2 | −1.4 (3) |
O1—Mn1—N2—C10 | 152.3 (4) | C12—C11—C16—C15 | 0.8 (3) |
O2—Mn1—N2—C10 | −11.72 (18) | C10—C11—C16—C15 | 175.50 (19) |
N1—Mn1—N2—C10 | 169.01 (19) | Mn1—O3—C17—O4 | 77.7 (3) |
O3—Mn1—N2—C10 | −101.45 (18) | Mn1—O3—C17—C18 | −104.5 (2) |
O7—Mn1—N2—C10 | 79.77 (18) | O4—C17—C18—C19 | 165.9 (2) |
O1—Mn1—N2—C9 | −29.4 (5) | O3—C17—C18—C19 | −12.1 (3) |
O2—Mn1—N2—C9 | 166.56 (14) | O4—C17—C18—C23 | −11.5 (3) |
N1—Mn1—N2—C9 | −12.70 (14) | O3—C17—C18—C23 | 170.54 (19) |
O3—Mn1—N2—C9 | 76.84 (14) | C23—C18—C19—C20 | 0.8 (3) |
O7—Mn1—N2—C9 | −101.95 (14) | C17—C18—C19—C20 | −176.6 (2) |
Mn1—O1—C1—C2 | 154.51 (16) | C18—C19—C20—C21 | −1.2 (3) |
Mn1—O1—C1—C6 | −26.4 (3) | C19—C20—C21—C22 | 0.4 (3) |
O1—C1—C2—C3 | 179.8 (2) | C20—C21—C22—C23 | 0.7 (3) |
C6—C1—C2—C3 | 0.6 (3) | C20—C21—C22—N3 | 178.6 (2) |
C1—C2—C3—C4 | −0.5 (4) | O5—N3—C22—C21 | −165.6 (2) |
C2—C3—C4—C5 | 0.1 (4) | O6—N3—C22—C21 | 14.7 (3) |
C3—C4—C5—C6 | 0.1 (4) | O5—N3—C22—C23 | 12.4 (3) |
C4—C5—C6—C1 | 0.0 (3) | O6—N3—C22—C23 | −167.3 (2) |
C4—C5—C6—C7 | −178.4 (2) | C21—C22—C23—C18 | −1.0 (3) |
O1—C1—C6—C5 | −179.4 (2) | N3—C22—C23—C18 | −178.95 (18) |
C2—C1—C6—C5 | −0.3 (3) | C19—C18—C23—C22 | 0.3 (3) |
O1—C1—C6—C7 | −1.1 (3) | C17—C18—C23—C22 | 177.69 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H2W···O2i | 0.77 | 2.31 | 3.074 (2) | 172 |
O7—H1W···O4ii | 0.84 | 1.89 | 2.710 (2) | 166 |
Symmetry codes: (i) −x−1/2, y+1/2, −z+1/2; (ii) −x+1/2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Mn(C16H14N2O2)(C7H4NO4)(H2O)] |
Mr | 505.36 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 6.7297 (1), 10.5793 (2), 29.228 (5) |
β (°) | 95.188 (1) |
V (Å3) | 2072.4 (4) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 5.66 |
Crystal size (mm) | 0.35 × 0.29 × 0.09 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2004) |
Tmin, Tmax | 0.245, 0.624 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 21257, 3640, 3492 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.092, 1.11 |
No. of reflections | 3640 |
No. of parameters | 308 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.35, −0.51 |
Computer programs: APEX2 (Bruker, 2004), SAINT-Plus (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008) and XSHELL (Bruker, 2004), ORTEP-3 (Farrugia, 1997) and Mercury (Macrae et al. 2006), SHELXL97 (Sheldrick, 2008).
Mn1—O1 | 1.8879 (15) | Mn1—N1 | 1.9980 (18) |
Mn1—O2 | 1.9113 (15) | Mn1—O3 | 2.1513 (15) |
Mn1—N2 | 1.9946 (18) | Mn1—O7 | 2.3250 (16) |
O1—Mn1—O2 | 97.25 (7) | N2—Mn1—O3 | 91.40 (7) |
O1—Mn1—N2 | 171.26 (7) | N1—Mn1—O3 | 89.75 (7) |
O2—Mn1—N2 | 91.15 (7) | O1—Mn1—O7 | 90.07 (6) |
O1—Mn1—N1 | 90.20 (7) | O2—Mn1—O7 | 91.54 (6) |
O2—Mn1—N1 | 172.54 (7) | N2—Mn1—O7 | 87.29 (6) |
N2—Mn1—N1 | 81.42 (7) | N1—Mn1—O7 | 88.85 (6) |
O1—Mn1—O3 | 91.05 (6) | O3—Mn1—O7 | 178.21 (6) |
O2—Mn1—O3 | 89.70 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H2W···O2i | 0.77 | 2.31 | 3.074 (2) | 171.9 |
O7—H1W···O4ii | 0.84 | 1.89 | 2.710 (2) | 165.5 |
Symmetry codes: (i) −x−1/2, y+1/2, −z+1/2; (ii) −x+1/2, y+1/2, −z+1/2. |
Acknowledgements
We acknowledge the authorities of SN College, Varkala, Kerala, India, for providing the facilities for this research. We also acknowledge the NSF (CHE-0443345) and the College of William and Mary for the purchase of the X-ray equipment.
References
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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.
Manganese plays a vital role in several biological systems like the oxygen-evolving complex (OEC) of photosystem II (Zouni et al., 2001) and enzymes like superoxide dismutase, catalase, arginase etc. (Yocum & Pecoraro, 2004). The progress in elucidating the structural and functional aspects of the active-sites of these manganese-containing systems, has essentially been connected to the vast number of inorganic model complexes reported during the last few decades (Christou, 1989; Pecoraro & Hsieh, 2000). Recent reports include a few Schiff base complexes of manganese(III) with ancillary carboxylate ligands (Aurangzeb et al., 1994, Hulme et al., 1997; Zhang & Janiak, 2001). Generally, symmetrical N2O2 Schiff base ligands like the salen(H2salen = N,N'-bis(salicylidene)-1,2-diaminoethane), with aromatic rings amenable to π-π overlap, tend to stabilize µ-phenoxy dimers. Here we report a very rare structural type among such complexes, where the trans coordination positions in an octahedral manganese(III) monomer are occupied by a neutral ligand (H2O) and a monodentate carboxylate group (Fig. 1).
In the title compound, the salen ligand holds the manganese(III) ion at the centre of a nearly planar tetragon consisting of two Mn–O bonds [Mn(1)-O(1) = 1.8879 (15) Å and Mn(1)-O(2) = 1.9113 (15) Å] and two Mn–N bonds [Mn(1)-N(1) = 1.9980 (18) Å and Mn(1)-N(2) = 1.9946 (18)Å]. These bond lengths are comparable to those in complexes containing similar MnN2O2 cores (Aurangzeb et al., 1994; Hulme et al., 1997). Jahn-Teller distortion causes an elongation of the Mn–Ocarb [Mn(1)-O(3) = 2.1513 (15) Å] and the Mn–Oaq [Mn(1)-O(7) = 2.3250 (16) Å] axial bonds (Table 1). Chains running parallel to the b-axis arise from H-bonding interactions between the non-coordinated O atom of the carboxylate and coordinated water molecules on adjacent molecules (Fig.2, Table 2).