metal-organic compounds
Tetraaquabis[μ-N-(5-nitro-2-oxidobenzylidene)glycylglycinato]manganese(II)dinickel(II) tetrahydrate
aChemistry Department, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
*Correspondence e-mail: zouyang@zstu.edu.cn
The two unique NiII atoms of the title complex, [MnNi2(C11H8N3O6)2(H2O)4]·4H2O, have a slightly distorted square-planar coordination environment with a tetradentate N-(5-nitro-2-oxidobenzylidene)glycylglycinate Schiff base trianion. The NiII atoms are coordinated by one phenolate O atom, one imine N atom, one amido N atom and one carboxylate O atom. The MnII atom is connected via the carboxylate groups, forming a hetero-trinuclear NiII–MnII–NiII system. The MnII atom is six-coordinated in an octahedral geometry by four O atoms from two carboxylate groups and four water molecules. The NiII–MnII–NiII hetero-trinuclear molecules are stacked in the crystal and cross-linked through O—H⋯O hydrogen bonds.
Related literature
Transition metal complexes of salicylaldehyde-peptides and salicylaldehyde-amino acid et al. (1988); Wetmore et al. (2001); Zabinski & Toney (2001). For the preparation, structural characterization, appropriate spectroscopy and magnetic studies of Schiff-base complexes derived from salicylaldehyde and amino acids, see: Ganguly et al. (2008) and references cited therein. For derived from simple see: Zou et al. (2003).
are non-enzymatic models for pyridoxal-amino acid systems, which are of considerable importance as key intermediates in many metabolic reactions of amino acids catalysed by enzymes, see: Bkouche-WaksmanExperimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2003); cell SAINT (Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: DIAMOND (Brandenburg, 2000).
Supporting information
10.1107/S1600536810011293/jh2139sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810011293/jh2139Isup2.hkl
The Schiff base was prepared through the condensation of the glycylglycine and 2-hydrogen-5-nitrobenzaldehyde. glycylglycine (10 mmol) was dissolved and refluxed in absolute methanol (40 mL) containing LiOH.H2O (10 mmol). After cooled to room temperature, a solution of 2-hydrogen-5-nitrobenzaldehyde (10 mmol) in absolute methanol was added slowly with stirring for 10 min. then NiCl2.6H2O (10 mmol) was added to the HLLi solution and the resulting solution was adjusted to the pH = 9-11 by 1.0 mol/L NaOH solution. After stirring at room temperature for 30 min, the volume was reduced to ca. 5 mL in vacuo. Anhydrous ethanol was added to precipitate the product out, which can be recrystallized in methanol solution.(Found: C, 33.4; H, 3.0; N, 10.6. Calc. For C11H12N3O8NiNa: C, 33.4; H, 3.1; N, 10.6%.) Na[NiL].2H2O (2 mmol) was dissolved in 10 mL water. Then MnCl2.4H2O (1 mmol) was added to the solution with stirring. The resulting crude product was precipitated. It was recrystallized in hot water (90°C) and filtered. The filtrate was allowed to evaporate slowly at room temperature. After several days orange crystals suitable for X-ray diffraction were obtained. (Found: C, 30.4; H, 3.8; N, 9.6. Calc. For C22H32N6O20Ni2Mn: C, 30.3; H, 3.7; N, 9.6%.)
The water H atoms in the complex were located in a difference Fourier map with a distance restraint of O-H = 0.85 Å and Uiso(H) =1.5Ueq(O). All other H atoms were positioned geometrically and constrained as riding atoms, with C-H distances of 0.93–0.97 Å and Uiso(H) set to 1.2 or 1.5Ueq(C) of the parent atom.
Data collection: SMART (Bruker, 2003); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: DIAMOND (Brandenburg, 2000).Fig. 1. ORTEP plot of complex 1 with atom numbering scheme (Thermal ellipsoids are drawn at 40% probability level). | |
Fig. 2. Schematic representation of the hydrogen-bonded (dashed lines)2-D network. |
[MnNi2(C11H8N3O6)2(H2O)4]·4H2O | F(000) = 1788 |
Mr = 872.90 | Dx = 1.814 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2635 reflections |
a = 7.250 (1) Å | θ = 1.8–25° |
b = 11.581 (2) Å | µ = 1.65 mm−1 |
c = 38.058 (6) Å | T = 293 K |
β = 90.29 (1)° | Block, orange |
V = 3195.4 (9) Å3 | 0.25 × 0.20 × 0.15 mm |
Z = 4 |
Bruker SMART CCD diffractometer | 5600 independent reflections |
Radiation source: fine-focus sealed tube | 2635 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.111 |
2θ/ω scans | θmax = 25.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker 2003) | h = −8→8 |
Tmin = 0.68, Tmax = 0.78 | k = −13→13 |
15513 measured reflections | l = −36→45 |
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)] = 0.065 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 0.93 | w = 1/[σ2(Fo2) + (0.0546P)2] where P = (Fo2 + 2Fc2)/3 |
5600 reflections | (Δ/σ)max < 0.001 |
460 parameters | Δρmax = 0.59 e Å−3 |
387 restraints | Δρmin = −0.54 e Å−3 |
[MnNi2(C11H8N3O6)2(H2O)4]·4H2O | V = 3195.4 (9) Å3 |
Mr = 872.90 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.250 (1) Å | µ = 1.65 mm−1 |
b = 11.581 (2) Å | T = 293 K |
c = 38.058 (6) Å | 0.25 × 0.20 × 0.15 mm |
β = 90.29 (1)° |
Bruker SMART CCD diffractometer | 5600 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker 2003) | 2635 reflections with I > 2σ(I) |
Tmin = 0.68, Tmax = 0.78 | Rint = 0.111 |
15513 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | 387 restraints |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 0.93 | Δρmax = 0.59 e Å−3 |
5600 reflections | Δρmin = −0.54 e Å−3 |
460 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 > 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 | ||
Ni1 | −0.13915 (11) | 0.32785 (5) | 0.362499 (18) | 0.0266 (2) | |
Ni2 | 0.13623 (11) | −0.16406 (5) | 0.138128 (18) | 0.0263 (2) | |
Mn1 | 0.07802 (13) | 0.22949 (7) | 0.21569 (2) | 0.0299 (2) | |
C1 | −0.2519 (8) | 0.2158 (5) | 0.42448 (14) | 0.0343 (6) | |
C2 | −0.2786 (8) | 0.1139 (5) | 0.44456 (14) | 0.0363 (7) | |
H2A | −0.2503 | 0.0425 | 0.4347 | 0.044* | |
C3 | −0.3441 (8) | 0.1186 (5) | 0.47744 (15) | 0.0376 (7) | |
H3A | −0.3623 | 0.0506 | 0.4900 | 0.045* | |
C4 | −0.3853 (8) | 0.2253 (5) | 0.49316 (14) | 0.0397 (6) | |
C5 | −0.3575 (8) | 0.3253 (5) | 0.47496 (14) | 0.0365 (7) | |
H5A | −0.3839 | 0.3956 | 0.4856 | 0.044* | |
C6 | −0.2909 (8) | 0.3237 (5) | 0.44104 (14) | 0.0348 (6) | |
C7 | −0.2654 (8) | 0.4335 (5) | 0.42340 (14) | 0.0345 (7) | |
H7A | −0.2963 | 0.5003 | 0.4356 | 0.041* | |
C8 | −0.1714 (8) | 0.5609 (4) | 0.37804 (14) | 0.0351 (7) | |
H8A | −0.0790 | 0.6008 | 0.3920 | 0.042* | |
H8B | −0.2845 | 0.6056 | 0.3786 | 0.042* | |
C9 | −0.1063 (8) | 0.5487 (4) | 0.34098 (14) | 0.0332 (7) | |
C10 | −0.0249 (8) | 0.4045 (4) | 0.29709 (14) | 0.0341 (7) | |
H10A | 0.0979 | 0.4339 | 0.2925 | 0.041* | |
H10B | −0.1076 | 0.4318 | 0.2788 | 0.041* | |
C11 | −0.0235 (8) | 0.2740 (5) | 0.29821 (14) | 0.0363 (6) | |
C12 | 0.2613 (8) | −0.1431 (4) | 0.06885 (14) | 0.0341 (6) | |
C13 | 0.3061 (8) | −0.0732 (5) | 0.03937 (14) | 0.0353 (7) | |
H13B | 0.2925 | 0.0065 | 0.0407 | 0.042* | |
C14 | 0.3657 (8) | −0.1209 (5) | 0.00931 (15) | 0.0368 (7) | |
H14B | 0.3987 | −0.0733 | −0.0093 | 0.044* | |
C15 | 0.3803 (8) | −0.2388 (5) | 0.00598 (14) | 0.0378 (6) | |
C16 | 0.3400 (8) | −0.3108 (5) | 0.03311 (14) | 0.0355 (7) | |
H16B | 0.3521 | −0.3903 | 0.0304 | 0.043* | |
C17 | 0.2800 (8) | −0.2648 (5) | 0.06529 (14) | 0.0334 (6) | |
C18 | 0.2295 (8) | −0.3429 (4) | 0.09273 (14) | 0.0316 (7) | |
H18A | 0.2388 | −0.4216 | 0.0882 | 0.038* | |
C19 | 0.1324 (8) | −0.4005 (4) | 0.14912 (13) | 0.0322 (7) | |
H19A | 0.2407 | −0.4471 | 0.1540 | 0.039* | |
H19B | 0.0356 | −0.4507 | 0.1403 | 0.039* | |
C20 | 0.0680 (8) | −0.3401 (4) | 0.18241 (14) | 0.0313 (7) | |
C21 | 0.0135 (8) | −0.1520 (4) | 0.20698 (14) | 0.0313 (7) | |
H21A | 0.0953 | −0.1595 | 0.2271 | 0.038* | |
H21B | −0.1113 | −0.1692 | 0.2144 | 0.038* | |
C22 | 0.0243 (8) | −0.0315 (4) | 0.19229 (14) | 0.0326 (6) | |
N1 | −0.4516 (7) | 0.2300 (4) | 0.52840 (12) | 0.0482 (8) | |
N2 | −0.2042 (7) | 0.4442 (4) | 0.39261 (11) | 0.0345 (7) | |
N3 | −0.0881 (6) | 0.4422 (3) | 0.33140 (11) | 0.0326 (7) | |
N4 | 0.4505 (7) | −0.2882 (4) | −0.02607 (12) | 0.0437 (8) | |
N5 | 0.1731 (6) | −0.3116 (3) | 0.12300 (11) | 0.0310 (7) | |
N6 | 0.0683 (6) | −0.2311 (3) | 0.17905 (11) | 0.0304 (7) | |
O1 | −0.1939 (5) | 0.2064 (3) | 0.39269 (9) | 0.0344 (7) | |
O2 | −0.4768 (7) | 0.1386 (4) | 0.54427 (11) | 0.0642 (12) | |
O3 | −0.4846 (7) | 0.3229 (4) | 0.54206 (11) | 0.0600 (11) | |
O4 | −0.0787 (6) | 0.6368 (3) | 0.32280 (10) | 0.0368 (10) | |
O5 | 0.0188 (6) | 0.2181 (3) | 0.27154 (10) | 0.0417 (7) | |
O6 | −0.0703 (5) | 0.2253 (3) | 0.32661 (9) | 0.0366 (7) | |
O7 | 0.2050 (5) | −0.0921 (3) | 0.09717 (9) | 0.0348 (7) | |
O8 | 0.4990 (6) | −0.2206 (3) | −0.04983 (10) | 0.0560 (11) | |
O9 | 0.4621 (6) | −0.3915 (3) | −0.02960 (11) | 0.0560 (11) | |
O10 | 0.0257 (5) | −0.3997 (3) | 0.20923 (9) | 0.0341 (10) | |
O11 | −0.0247 (5) | 0.0516 (3) | 0.21069 (9) | 0.0353 (7) | |
O12 | 0.0853 (5) | −0.0228 (3) | 0.16104 (9) | 0.0316 (7) | |
O13 | −0.1904 (5) | 0.2964 (3) | 0.20329 (11) | 0.0541 (10) | |
H13A | −0.2458 | 0.3118 | 0.2223 | 0.081* | |
H13D | −0.2508 | 0.2456 | 0.1919 | 0.081* | |
O14 | 0.3433 (5) | 0.1613 (3) | 0.22748 (10) | 0.0437 (9) | |
H14A | 0.3580 | 0.1596 | 0.2496 | 0.066* | |
H14D | 0.4251 | 0.2044 | 0.2184 | 0.066* | |
O15 | 0.1896 (6) | 0.4015 (3) | 0.21661 (10) | 0.0427 (10) | |
H15B | 0.3018 | 0.3994 | 0.2102 | 0.064* | |
H15C | 0.1284 | 0.4438 | 0.2025 | 0.064* | |
O16 | 0.1345 (6) | 0.2113 (3) | 0.15781 (9) | 0.0425 (10) | |
H16C | 0.2093 | 0.1558 | 0.1547 | 0.064* | |
H16D | 0.0341 | 0.1973 | 0.1470 | 0.064* | |
O17 | 0.5613 (6) | 0.4713 (3) | 0.21007 (11) | 0.0573 (15) | |
H17B | 0.5287 | 0.5210 | 0.1948 | 0.086* | |
H17C | 0.5642 | 0.5026 | 0.2302 | 0.086* | |
O18 | 0.3366 (6) | 0.3427 (4) | 0.11301 (11) | 0.0700 (17) | |
H18B | 0.3322 | 0.3135 | 0.0925 | 0.105* | |
H18D | 0.4479 | 0.3445 | 0.1201 | 0.105* | |
O19 | 0.6018 (6) | 0.4872 (3) | 0.13746 (11) | 0.0641 (16) | |
H19C | 0.6778 | 0.5328 | 0.1473 | 0.096* | |
H19E | 0.5347 | 0.5248 | 0.1231 | 0.096* | |
O20 | 0.8821 (7) | 0.3487 (4) | 0.11641 (12) | 0.0738 (17) | |
H20D | 0.7738 | 0.3294 | 0.1225 | 0.089* | |
H20A | 0.8938 | 0.3398 | 0.0944 | 0.111* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ni1 | 0.0393 (5) | 0.0211 (3) | 0.0196 (4) | 0.0026 (4) | 0.0049 (3) | 0.0005 (3) |
Ni2 | 0.0400 (5) | 0.0171 (3) | 0.0220 (4) | 0.0029 (4) | 0.0017 (3) | 0.0001 (3) |
Mn1 | 0.0426 (6) | 0.0215 (4) | 0.0256 (5) | 0.0016 (4) | 0.0047 (4) | 0.0000 (4) |
C1 | 0.0433 (13) | 0.0324 (10) | 0.0274 (10) | −0.0038 (12) | 0.0070 (11) | 0.0030 (9) |
C2 | 0.0443 (15) | 0.0348 (11) | 0.0298 (12) | −0.0036 (14) | 0.0056 (13) | 0.0047 (11) |
C3 | 0.0459 (16) | 0.0371 (11) | 0.0298 (12) | −0.0078 (14) | 0.0054 (13) | 0.0061 (11) |
C4 | 0.0496 (13) | 0.0406 (11) | 0.0290 (10) | −0.0097 (12) | 0.0070 (11) | 0.0015 (9) |
C5 | 0.0453 (15) | 0.0364 (12) | 0.0280 (11) | −0.0070 (14) | 0.0056 (13) | −0.0010 (10) |
C6 | 0.0435 (13) | 0.0340 (10) | 0.0270 (10) | −0.0038 (12) | 0.0064 (11) | −0.0004 (9) |
C7 | 0.0456 (15) | 0.0318 (11) | 0.0262 (11) | 0.0000 (14) | 0.0100 (13) | −0.0031 (10) |
C8 | 0.0508 (15) | 0.0250 (11) | 0.0295 (11) | 0.0019 (14) | 0.0100 (13) | −0.0024 (10) |
C9 | 0.0478 (15) | 0.0230 (10) | 0.0289 (12) | −0.0008 (13) | 0.0093 (13) | 0.0001 (9) |
C10 | 0.0487 (15) | 0.0253 (10) | 0.0283 (12) | −0.0046 (14) | 0.0134 (13) | −0.0020 (10) |
C11 | 0.0538 (13) | 0.0254 (10) | 0.0299 (9) | −0.0030 (12) | 0.0157 (11) | −0.0046 (10) |
C12 | 0.0466 (13) | 0.0292 (10) | 0.0265 (10) | −0.0019 (12) | 0.0043 (11) | 0.0014 (9) |
C13 | 0.0474 (15) | 0.0316 (12) | 0.0270 (12) | −0.0032 (14) | 0.0034 (13) | 0.0023 (10) |
C14 | 0.0479 (16) | 0.0354 (11) | 0.0272 (12) | −0.0055 (14) | 0.0026 (13) | 0.0010 (11) |
C15 | 0.0496 (13) | 0.0355 (10) | 0.0284 (10) | −0.0063 (12) | 0.0025 (11) | −0.0018 (9) |
C16 | 0.0456 (15) | 0.0319 (12) | 0.0289 (11) | −0.0040 (14) | 0.0031 (12) | −0.0031 (10) |
C17 | 0.0440 (13) | 0.0289 (10) | 0.0273 (10) | −0.0019 (12) | 0.0025 (11) | −0.0010 (9) |
C18 | 0.0443 (15) | 0.0235 (12) | 0.0270 (11) | −0.0010 (14) | 0.0024 (12) | −0.0038 (10) |
C19 | 0.0475 (15) | 0.0201 (11) | 0.0289 (11) | 0.0005 (14) | 0.0033 (13) | −0.0006 (10) |
C20 | 0.0469 (15) | 0.0200 (10) | 0.0271 (11) | 0.0006 (13) | 0.0028 (13) | 0.0004 (10) |
C21 | 0.0449 (15) | 0.0207 (10) | 0.0284 (12) | −0.0008 (13) | 0.0071 (13) | −0.0008 (10) |
C22 | 0.0470 (13) | 0.0206 (9) | 0.0302 (11) | −0.0008 (12) | 0.0068 (11) | −0.0020 (9) |
N1 | 0.0628 (17) | 0.0497 (13) | 0.0323 (13) | −0.0140 (15) | 0.0127 (14) | 0.0000 (11) |
N2 | 0.0492 (16) | 0.0281 (10) | 0.0263 (11) | 0.0012 (13) | 0.0098 (12) | −0.0012 (9) |
N3 | 0.0476 (15) | 0.0235 (9) | 0.0269 (11) | −0.0038 (13) | 0.0113 (13) | −0.0022 (9) |
N4 | 0.0584 (17) | 0.0394 (12) | 0.0333 (13) | −0.0085 (15) | 0.0088 (14) | −0.0036 (11) |
N5 | 0.0449 (15) | 0.0201 (10) | 0.0279 (10) | −0.0002 (13) | 0.0050 (12) | −0.0022 (9) |
N6 | 0.0456 (15) | 0.0191 (9) | 0.0267 (11) | −0.0012 (13) | 0.0060 (12) | 0.0002 (9) |
O1 | 0.0462 (18) | 0.0298 (12) | 0.0272 (11) | −0.0009 (15) | 0.0069 (13) | 0.0017 (10) |
O2 | 0.096 (3) | 0.0608 (15) | 0.0361 (19) | −0.018 (2) | 0.025 (2) | 0.0044 (16) |
O3 | 0.080 (3) | 0.0618 (15) | 0.038 (2) | −0.005 (2) | 0.027 (2) | −0.0038 (16) |
O4 | 0.052 (2) | 0.0251 (14) | 0.0339 (18) | −0.0018 (18) | 0.0044 (18) | 0.0058 (14) |
O5 | 0.0627 (16) | 0.0301 (13) | 0.0324 (10) | −0.0030 (15) | 0.0174 (11) | −0.0070 (10) |
O6 | 0.0546 (18) | 0.0226 (11) | 0.0327 (11) | −0.0025 (15) | 0.0165 (14) | −0.0039 (10) |
O7 | 0.0515 (18) | 0.0264 (12) | 0.0267 (11) | −0.0008 (15) | 0.0055 (13) | 0.0021 (10) |
O8 | 0.082 (3) | 0.0493 (17) | 0.0368 (17) | −0.012 (2) | 0.0166 (19) | −0.0006 (16) |
O9 | 0.083 (3) | 0.0416 (14) | 0.043 (2) | −0.008 (2) | 0.016 (2) | −0.0106 (15) |
O10 | 0.048 (2) | 0.0242 (16) | 0.0300 (16) | 0.0045 (18) | 0.0046 (17) | 0.0047 (13) |
O11 | 0.0509 (15) | 0.0233 (9) | 0.0319 (14) | −0.0016 (11) | 0.0061 (13) | −0.0050 (10) |
O12 | 0.0471 (18) | 0.0172 (11) | 0.0305 (12) | −0.0018 (14) | 0.0082 (13) | −0.0013 (10) |
O13 | 0.0444 (14) | 0.0422 (19) | 0.076 (2) | 0.0112 (14) | −0.0082 (16) | −0.014 (2) |
O14 | 0.0414 (14) | 0.0468 (19) | 0.043 (2) | 0.0072 (14) | 0.0042 (14) | 0.003 (2) |
O15 | 0.055 (2) | 0.0285 (13) | 0.045 (2) | −0.0078 (14) | −0.001 (2) | 0.0030 (14) |
O16 | 0.058 (2) | 0.040 (2) | 0.0293 (12) | −0.0019 (19) | 0.0033 (14) | −0.0009 (14) |
O17 | 0.070 (3) | 0.037 (2) | 0.066 (3) | 0.001 (2) | 0.015 (3) | 0.001 (2) |
O18 | 0.082 (4) | 0.080 (3) | 0.047 (3) | −0.024 (3) | 0.010 (3) | −0.013 (3) |
O19 | 0.087 (4) | 0.044 (3) | 0.062 (3) | −0.004 (3) | 0.007 (3) | 0.001 (2) |
O20 | 0.077 (4) | 0.093 (4) | 0.051 (3) | 0.007 (3) | 0.024 (3) | 0.007 (3) |
Ni1—N3 | 1.816 (4) | C13—C14 | 1.344 (7) |
Ni1—N2 | 1.832 (4) | C13—H13B | 0.9300 |
Ni1—O1 | 1.860 (3) | C14—C15 | 1.376 (7) |
Ni1—O6 | 1.879 (3) | C14—H14B | 0.9299 |
Ni2—N6 | 1.811 (4) | C15—C16 | 1.361 (7) |
Ni2—N5 | 1.823 (4) | C15—N4 | 1.442 (7) |
Ni2—O7 | 1.839 (4) | C16—C17 | 1.407 (7) |
Ni2—O12 | 1.891 (3) | C16—H16B | 0.9300 |
Mn1—O14 | 2.125 (4) | C17—C18 | 1.431 (7) |
Mn1—O13 | 2.145 (4) | C18—N5 | 1.277 (6) |
Mn1—O15 | 2.150 (3) | C18—H18A | 0.9299 |
Mn1—O5 | 2.174 (4) | C19—N5 | 1.462 (6) |
Mn1—O11 | 2.198 (3) | C19—C20 | 1.522 (7) |
Mn1—O16 | 2.252 (3) | C19—H19A | 0.9701 |
C1—O1 | 1.287 (6) | C19—H19B | 0.9698 |
C1—C2 | 1.421 (7) | C20—N6 | 1.268 (6) |
C1—C6 | 1.428 (7) | C20—O10 | 1.271 (6) |
C2—C3 | 1.341 (7) | C21—N6 | 1.460 (6) |
C2—H2A | 0.9300 | C21—C22 | 1.506 (7) |
C3—C4 | 1.405 (8) | C21—H21A | 0.9701 |
C3—H3A | 0.9300 | C21—H21B | 0.9701 |
C4—C5 | 1.365 (7) | C22—O11 | 1.243 (6) |
C4—N1 | 1.428 (7) | C22—O12 | 1.275 (6) |
C5—C6 | 1.381 (7) | N1—O3 | 1.219 (6) |
C5—H5A | 0.9300 | N1—O2 | 1.233 (6) |
C6—C7 | 1.449 (7) | N4—O9 | 1.207 (6) |
C7—N2 | 1.262 (6) | N4—O8 | 1.248 (5) |
C7—H7A | 0.9300 | O13—H13A | 0.8499 |
C8—N2 | 1.481 (6) | O13—H13D | 0.8501 |
C8—C9 | 1.496 (7) | O14—H14A | 0.8501 |
C8—H8A | 0.9700 | O14—H14D | 0.8499 |
C8—H8B | 0.9700 | O15—H15B | 0.8501 |
C9—O4 | 1.249 (6) | O15—H15C | 0.8502 |
C9—N3 | 1.294 (6) | O16—H16C | 0.8497 |
C10—N3 | 1.453 (6) | O16—H16D | 0.8496 |
C10—C11 | 1.512 (7) | O17—H17B | 0.8503 |
C10—H10A | 0.9700 | O17—H17C | 0.8491 |
C10—H10B | 0.9700 | O18—H18B | 0.8499 |
C11—O5 | 1.243 (6) | O18—H18D | 0.8500 |
C11—O6 | 1.267 (6) | O19—H19C | 0.8500 |
C12—O7 | 1.296 (6) | O19—H19E | 0.8500 |
C12—C13 | 1.422 (7) | O20—H20D | 0.8499 |
C12—C17 | 1.422 (7) | O20—H20A | 0.8501 |
N3—Ni1—N2 | 85.72 (19) | C13—C14—H14B | 119.4 |
N3—Ni1—O1 | 177.46 (18) | C15—C14—H14B | 119.9 |
N2—Ni1—O1 | 96.51 (17) | C16—C15—C14 | 121.5 (5) |
N3—Ni1—O6 | 86.06 (17) | C16—C15—N4 | 118.5 (5) |
N2—Ni1—O6 | 171.67 (17) | C14—C15—N4 | 119.9 (5) |
O1—Ni1—O6 | 91.69 (15) | C15—C16—C17 | 119.8 (5) |
N6—Ni2—N5 | 84.86 (19) | C15—C16—H16B | 120.1 |
N6—Ni2—O7 | 178.46 (17) | C17—C16—H16B | 120.1 |
N5—Ni2—O7 | 96.66 (17) | C16—C17—C12 | 119.3 (5) |
N6—Ni2—O12 | 85.41 (17) | C16—C17—C18 | 118.5 (5) |
N5—Ni2—O12 | 170.27 (17) | C12—C17—C18 | 122.2 (5) |
O7—Ni2—O12 | 93.07 (15) | N5—C18—C17 | 124.3 (5) |
O14—Mn1—O13 | 179.20 (16) | N5—C18—H18A | 117.9 |
O14—Mn1—O15 | 90.04 (15) | C17—C18—H18A | 117.8 |
O13—Mn1—O15 | 90.57 (15) | N5—C19—C20 | 107.8 (4) |
O14—Mn1—O5 | 87.37 (15) | N5—C19—H19A | 110.9 |
O13—Mn1—O5 | 93.08 (16) | C20—C19—H19A | 110.3 |
O15—Mn1—O5 | 96.69 (14) | N5—C19—H19B | 109.6 |
O14—Mn1—O11 | 88.61 (14) | C20—C19—H19B | 109.8 |
O13—Mn1—O11 | 90.74 (15) | H19A—C19—H19B | 108.4 |
O15—Mn1—O11 | 175.37 (14) | N6—C20—O10 | 128.4 (5) |
O5—Mn1—O11 | 87.67 (14) | N6—C20—C19 | 111.9 (5) |
O14—Mn1—O16 | 90.16 (15) | O10—C20—C19 | 119.7 (4) |
O13—Mn1—O16 | 89.30 (16) | N6—C21—C22 | 107.3 (4) |
O15—Mn1—O16 | 91.85 (14) | N6—C21—H21A | 110.6 |
O5—Mn1—O16 | 171.11 (13) | C22—C21—H21A | 110.1 |
O11—Mn1—O16 | 83.72 (13) | N6—C21—H21B | 110.0 |
O1—C1—C2 | 118.8 (5) | C22—C21—H21B | 110.4 |
O1—C1—C6 | 123.7 (5) | H21A—C21—H21B | 108.5 |
C2—C1—C6 | 117.5 (5) | O11—C22—O12 | 124.5 (5) |
C3—C2—C1 | 121.2 (5) | O11—C22—C21 | 119.5 (5) |
C3—C2—H2A | 119.4 | O12—C22—C21 | 116.0 (4) |
C1—C2—H2A | 119.4 | O3—N1—O2 | 121.2 (5) |
C2—C3—C4 | 120.7 (5) | O3—N1—C4 | 120.2 (5) |
C2—C3—H3A | 119.7 | O2—N1—C4 | 118.6 (5) |
C4—C3—H3A | 119.7 | C7—N2—C8 | 119.7 (4) |
C5—C4—C3 | 119.8 (5) | C7—N2—Ni1 | 127.0 (4) |
C5—C4—N1 | 119.7 (5) | C8—N2—Ni1 | 113.3 (3) |
C3—C4—N1 | 120.5 (5) | C9—N3—C10 | 125.0 (4) |
C4—C5—C6 | 121.1 (5) | C9—N3—Ni1 | 119.4 (4) |
C4—C5—H5A | 119.5 | C10—N3—Ni1 | 115.6 (3) |
C6—C5—H5A | 119.5 | O9—N4—O8 | 121.4 (5) |
C5—C6—C1 | 119.7 (5) | O9—N4—C15 | 120.8 (5) |
C5—C6—C7 | 117.8 (5) | O8—N4—C15 | 117.8 (4) |
C1—C6—C7 | 122.5 (5) | C18—N5—C19 | 118.7 (4) |
N2—C7—C6 | 124.2 (5) | C18—N5—Ni2 | 126.8 (4) |
N2—C7—H7A | 117.9 | C19—N5—Ni2 | 114.5 (3) |
C6—C7—H7A | 117.9 | C20—N6—C21 | 123.4 (4) |
N2—C8—C9 | 108.6 (4) | C20—N6—Ni2 | 120.9 (4) |
N2—C8—H8A | 110.0 | C21—N6—Ni2 | 115.7 (3) |
C9—C8—H8A | 110.0 | C1—O1—Ni1 | 126.0 (3) |
N2—C8—H8B | 110.0 | C11—O5—Mn1 | 144.8 (4) |
C9—C8—H8B | 110.0 | C11—O6—Ni1 | 114.4 (3) |
H8A—C8—H8B | 108.4 | C12—O7—Ni2 | 125.9 (3) |
O4—C9—N3 | 127.3 (5) | C22—O11—Mn1 | 132.6 (4) |
O4—C9—C8 | 119.8 (5) | C22—O12—Ni2 | 115.6 (3) |
N3—C9—C8 | 112.9 (5) | Mn1—O13—H13A | 108.7 |
N3—C10—C11 | 106.1 (4) | Mn1—O13—H13D | 109.1 |
N3—C10—H10A | 110.5 | H13A—O13—H13D | 109.5 |
C11—C10—H10A | 110.5 | Mn1—O14—H14A | 109.1 |
N3—C10—H10B | 110.5 | Mn1—O14—H14D | 109.2 |
C11—C10—H10B | 110.5 | H14A—O14—H14D | 109.5 |
H10A—C10—H10B | 108.7 | Mn1—O15—H15B | 109.2 |
O5—C11—O6 | 122.2 (5) | Mn1—O15—H15C | 109.2 |
O5—C11—C10 | 119.9 (5) | H15B—O15—H15C | 109.5 |
O6—C11—C10 | 117.8 (5) | Mn1—O16—H16C | 109.1 |
O7—C12—C13 | 118.1 (5) | Mn1—O16—H16D | 109.4 |
O7—C12—C17 | 124.1 (5) | H16C—O16—H16D | 109.5 |
C13—C12—C17 | 117.8 (5) | H17B—O17—H17C | 109.5 |
C14—C13—C12 | 120.9 (5) | H18B—O18—H18D | 109.5 |
C14—C13—H13B | 119.2 | H19C—O19—H19E | 109.5 |
C12—C13—H13B | 119.8 | H20D—O20—H20A | 109.5 |
C13—C14—C15 | 120.8 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
O13—H13A···O17i | 0.85 | 2.36 | 2.723 (5) | 106 |
O13—H13D···O4ii | 0.85 | 1.85 | 2.681 (5) | 165 |
O14—H14A···O10iii | 0.85 | 1.90 | 2.679 (5) | 151 |
O14—H14D···O4iv | 0.85 | 2.08 | 2.586 (5) | 118 |
O15—H15B···O17 | 0.85 | 2.06 | 2.826 (6) | 150 |
O15—H15C···O10v | 0.85 | 1.98 | 2.607 (5) | 130 |
O16—H16C···O12 | 0.85 | 2.27 | 2.737 (5) | 115 |
O16—H16D···O20i | 0.85 | 2.37 | 2.887 (6) | 119 |
O17—H17B···O6iii | 0.85 | 2.52 | 3.257 (5) | 145 |
O17—H17C···O11iii | 0.85 | 2.34 | 3.168 (5) | 166 |
O18—H18B···O8vi | 0.85 | 2.31 | 3.039 (6) | 145 |
O18—H18D···O19 | 0.85 | 2.10 | 2.710 (6) | 128 |
O19—H19C···O6iii | 0.85 | 2.56 | 3.087 (5) | 121 |
O19—H19E···O1iii | 0.85 | 2.47 | 2.867 (5) | 109 |
O20—H20A···O2vii | 0.85 | 2.14 | 2.938 (6) | 156 |
O20—H20D···O19 | 0.85 | 2.29 | 2.713 (6) | 111 |
Symmetry codes: (i) x−1, y, z; (ii) −x−1/2, y−1/2, −z+1/2; (iii) −x+1/2, y+1/2, −z+1/2; (iv) −x+1/2, y−1/2, −z+1/2; (v) x, y+1, z; (vi) −x+1, −y, −z; (vii) x+3/2, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [MnNi2(C11H8N3O6)2(H2O)4]·4H2O |
Mr | 872.90 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 7.250 (1), 11.581 (2), 38.058 (6) |
β (°) | 90.29 (1) |
V (Å3) | 3195.4 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.65 |
Crystal size (mm) | 0.25 × 0.20 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker 2003) |
Tmin, Tmax | 0.68, 0.78 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 15513, 5600, 2635 |
Rint | 0.111 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.161, 0.93 |
No. of reflections | 5600 |
No. of parameters | 460 |
No. of restraints | 387 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.59, −0.54 |
Computer programs: SMART (Bruker, 2003), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008), DIAMOND (Brandenburg, 2000).
D—H···A | D—H | H···A | D···A | D—H···A |
O13—H13A···O17i | 0.85 | 2.36 | 2.723 (5) | 106.1 |
O13—H13D···O4ii | 0.85 | 1.85 | 2.681 (5) | 165.3 |
O14—H14A···O10iii | 0.85 | 1.90 | 2.679 (5) | 151.4 |
O14—H14D···O4iv | 0.85 | 2.08 | 2.586 (5) | 117.5 |
O15—H15B···O17 | 0.85 | 2.06 | 2.826 (6) | 149.9 |
O15—H15C···O10v | 0.85 | 1.98 | 2.607 (5) | 130.0 |
O16—H16C···O12 | 0.85 | 2.27 | 2.737 (5) | 114.9 |
O16—H16D···O20i | 0.85 | 2.37 | 2.887 (6) | 119.4 |
O17—H17B···O6iii | 0.85 | 2.52 | 3.257 (5) | 145.4 |
O17—H17C···O11iii | 0.85 | 2.34 | 3.168 (5) | 166.1 |
O18—H18B···O8vi | 0.85 | 2.31 | 3.039 (6) | 144.5 |
O18—H18D···O19 | 0.85 | 2.10 | 2.710 (6) | 128.4 |
O19—H19C···O6iii | 0.85 | 2.56 | 3.087 (5) | 121.0 |
O19—H19E···O1iii | 0.85 | 2.47 | 2.867 (5) | 109.0 |
O20—H20A···O2vii | 0.85 | 2.14 | 2.938 (6) | 155.5 |
O20—H20D···O19 | 0.85 | 2.29 | 2.713 (6) | 111.3 |
Symmetry codes: (i) x−1, y, z; (ii) −x−1/2, y−1/2, −z+1/2; (iii) −x+1/2, y+1/2, −z+1/2; (iv) −x+1/2, y−1/2, −z+1/2; (v) x, y+1, z; (vi) −x+1, −y, −z; (vii) x+3/2, −y+1/2, z−1/2. |
Acknowledgements
The author thanks the Natural Science Foundation of Zhejiang Province, China (No. Y4080342) and the Science Foundation of Zhejiang Sci-Tech University (No. 0813622-Y) for financial support.
References
Bkouche-Waksman, I., Barbe, J. M. & Kvick, Å. (1988). Acta Cryst. B44, 595–601. CSD CrossRef CAS Web of Science IUCr Journals Google Scholar
Brandenburg, K. (2000). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2003). SADABS, SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Ganguly, R., Sreenivasulu, B. & Vittal, J. J. (2008). Coord. Chem. Rev. 252,1027–1050. Web of Science CrossRef CAS Google Scholar
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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.
Transition metal complexes of salicylaldehyde-peptides and salicylaldehyde-amino acid Schiff base are non-enzymatic models for pyridoxal-amino acid systems, which are of considerable importance as key intermediates in many metabolic reactions of amino acids catalyzed by enzymes (Zabinski et al., 2001; Wetmore et al., 2001; Bkouche-Waksman et al.,1988). Considerable effort has been devoted to the preparation, structural characterization, appropriate spectroscopy and magnetic studies of Schiff-base complexes derived from salicylaldehyde and amino acids and reduced salicylidene amino acid (Ganguly et al., 2008), but little attention has been given to Schiff base derived from simple peptides (Zou et al., 2003). Herein, we report the structure study of [Mn(H2O)4(Ni(C11H8N3O6))2]2.4H2O (H2L= Schiff bases derived from glycylglycine and 5-nitrosalicylaldehyde, C11H10N3O6).
The complex crystallizes in the monoclinic system, space group P21/n. The unit contents consist of one polynuclear molecule Mn(H2O)4[Ni(L)]2 and four water molecules (Fig 1). In each unit, one Mn(H2O)42+group and two symmetric [Ni(L)]- groups are connected by carboxylate oxygen atoms (O5, O11). The coordination environment of the two Ni(II) centers is approximately square-planar. The deprotonated Schiff base ligand is a triple negatively-charged tetradentate ONNO group, coordinating to the Ni(II) atom via one phenolic oxygen atom (Ni1-O1 = 1.860 (3) Å), one deprotonated amide nitrogen atom (Ni1-N2 = 1.832 (4) Å), one imino nitrogen atom (Ni1-N3 =1.816 (4) Å) and one carboxylate oxygen atom (Ni1-O6 =1.879 (3) Å). The values 1.481 (6)Å for the (C8-N2) bond, shorter than the usual C-N single bond and the double bond (C7-N2) length of 1.262 (6)Å agree well with the values of Schiff Base type I. A slight distortion in the square planar geometry of Ni (II) is present (observed bond angles vary from 85.72 (19) and 96.51 (17)° ) The best-fit least-squares plane through the four basal and Ni atoms shows these atoms to be nearly coplanar. The O1-Ni1-N3 angle of 177.46 (18) ° is nearly linear. The ligating atoms at Ni2 are similar to those at Ni1. Two carboxylate oxygen atoms (O5, O11) and four water molecule oxygen atoms (O13, O14, O15, O16) coordinate to the manganese atom forming a distorted octahedron. The Mn—O distances range from 2.125 (4) to 2.252 (3) Å. In the packing scheme of this compound the intermolecular and intramolecular hydrogen bonds plays a very important role. The hydrogen atoms of water bond with the carbonylic, carboxylic, phenolic and nitryl oxygen of the Schiff base ligand (Fig. 2). The molecules are linked by the hydrogen bond to form a two-dimensional network in the solid state.