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Acta Cryst. (2009). E65, m678-m679    [ doi:10.1107/S1600536809018728 ]

Bis(di-2-pyridylmethanediol-[kappa]3N,O,N')nickel(II) dinitrate

S. M. Yu, Y. J. Song, K. C. Kim, C. Kim and Y. Kim

Abstract top

The title compound, [Ni(C11H10N2O2)2](NO3)2, consists of an NiII atom coordinated by two tridentate chelating di-2-pyridylmethanediol [(2-py)2C(OH)2] ligands. The NiII atom is located on an inversion center. The geometry around the NiII atom is distorted octahedral. The gem-diol (2-py)2C(OH)2 ligand adopts the coordination mode [eta]1:[eta]1:[eta]1. The Ni-N and Ni-O bond lengths are typical for high-spin NiII in an octahedral environment [Ni-N = 2.094 (2) and 2.124 (3) Å, and Ni-O = 2.108 (3) Å]. One of the hydroxy H atoms is split over two positions which both interact with the nitrate anion. The occurence of different O-H...O hydrogen bonds leads to the formation of a layer parallel to the (101) plane.

Comment top

Di-2-pyridyl ketone ((py)2CO) has been employed to form structurally interesting new complexes with 3 d-metal ions (Stoumpos et al., 2009). Water and alcohols (ROH) have been shown to add to the carbonyl group forming the ligands (2-py)2C(OH)2 [the gem-diol form of (2-py)2CO] and (2-py)2C(OR)(OH) [the hemiacetal form of (2- py)2CO], respectively (Efthymiou et al., 2006). The neutral ligands (py)2C(OH)2 and (py)2C(OR)(OH) coordinate to the metal centres as N,N',O chelates (Papaefstathiou & Perlepes, 2002). The different interesting coordination modes have been seen when the ligands (py)2C(OH)2 and (py)2C(OR)(OH) are deprotonated to form mono- or dianion. The deprotonation of hydroxyl groups leads to a coordinative flexibility (Papatriantafyllopoulou et al., 2007; Stoumpos et al., 2008). Some NiII complexes of the neutral ligand, (py)2C(OH)2 have been structuraly characterized (Wang et al., 1986; Li et al., 2005), but no structure with a nitrate ion as the counter-ion has been reported to date.

The NiII atom is located on an inversion center and is coordinated by two tridentate chelating (2-py)2C(OH)2 ligand to form a distorted octahedral geometry. The gem-diol ligand (2-py)2C(OH)2 adopts the coordination mode η1:η1:η1 (Fig. 1). The Ni—N and Ni—O bond lengths are typical for high-spin Ni(II) in octahedral environments [Ni—N = 2.094 (2) and 2.124 (3) Å, Ni—O = 2.108 (3) Å] (Moragues-Cánovas et al., 2004). The hydrogen attached to O1 is splitting on two positions which are both in interaction with the NO3- anion. The O—H···O hydrogen bonds build up a layer parallel to the (101) plane (Table 1, Fig. 2).

Related literature top

For background information, see: Efthymiou et al. (2006); Moragues-Cánovas et al. (2004); Papaefstathiou & Perlepes (2002); Papatriantafyllopoulou et al. (2007); Stoumpos et al. (2008, 2009). For related structures, see: Li et al. (2005); Wang et al. (1986).

Experimental top

36.7 mg (0.125 mmol) of Ni(NO3)2.6H2O and 35.5 mg (0.25 mmol) of C6H5COONH4 were dissolved in 4 ml water and carefully layered by 4 ml solution of amixture of acetone, methanol and ethanol (2/2/2) of di-2-pyridyl ketone ligand (46.1 mg, 0.25 mmol). Suitable crystals of the title compound for X-ray analysis were obtained in a few weeks.

Refinement top

All H atoms attached to C atoms were fixed geometrically and treated as riding with C—H = 0.93 Å with Uiso(H) = 1.2Ueq(C). Hydroxyl H atom for O2 were treated as riding on the parent atom with O—H = 0.82 Å and Uiso(H) = 1.5Ueq(O). The hydroxyl H attached to O1 appears to be splitted on two positions. The coordinates of these two positions were initially refined with O—H restraints (0.85 Å) and Uiso(H) = 1.5Ueq(O). Then in the last stage of refinement these disordered H atoms were treated as riding on the O atom.

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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).

Figures top
[Figure 1] Fig. 1. View of the title complex with the atom labeling scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small spheres of arbitrary radii and hydrogen bonds are shown as dashed lines. [Symmetry code: (i) 1 - x, 1 - y, 1 - z].
[Figure 2] Fig. 2. Packing view down the b axis. Hydrogen bonds are shown as dashed lines. H atoms not involved in hydrogen bondings have been omitted for clarity.
Bis(di-2-pyridylmethanediol-κ3N,O,N')nickel(II) dinitrate top
Crystal data top
[Ni(C11H10N2O2)2](NO3)2F000 = 604
Mr = 587.15Dx = 1.570 Mg m−3
Monoclinic, P21/nMo Kα radiation
λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 2352 reflections
a = 8.4077 (9) Åθ = 2.5–25.6º
b = 15.5098 (16) ŵ = 0.85 mm−1
c = 9.5556 (10) ÅT = 293 K
β = 94.644 (2)ºPlate, pale brown
V = 1242.0 (2) Å30.20 × 0.10 × 0.03 mm
Z = 2
Data collection top
Bruker SMART CCD
diffractometer		1826 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.057
Monochromator: graphiteθmax = 26.0º
T = 293 Kθmin = 2.5º
φ and ω scansh = −11→11
Absorption correction: nonek = −20→12
7646 measured reflectionsl = −12→12
2442 independent reflections
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.046H-atom parameters constrained
wR(F2) = 0.135  w = 1/[σ2(Fo2) + (0.0755P)2 + 0.0426P]
where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max < 0.001
2442 reflectionsΔρmax = 0.49 e Å−3
179 parametersΔρmin = −0.59 e Å−3
Primary atom site location: structure-invariant direct methodsExtinction correction: none
Crystal data top
[Ni(C11H10N2O2)2](NO3)2V = 1242.0 (2) Å3
Mr = 587.15Z = 2
Monoclinic, P21/nMo Kα
a = 8.4077 (9) ŵ = 0.85 mm−1
b = 15.5098 (16) ÅT = 293 K
c = 9.5556 (10) Å0.20 × 0.10 × 0.03 mm
β = 94.644 (2)º
Data collection top
Bruker SMART CCD
diffractometer		2442 independent reflections
Absorption correction: none1826 reflections with I > 2σ(I)
7646 measured reflectionsRint = 0.057
Refinement top
R[F2 > 2σ(F2)] = 0.046179 parameters
wR(F2) = 0.135H-atom parameters constrained
S = 1.06Δρmax = 0.49 e Å−3
2442 reflectionsΔρmin = −0.59 e Å−3
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
Ni10.50000.50000.50000.0334 (2)
N10.3937 (3)0.52480 (18)0.2948 (3)0.0389 (6)
N20.2830 (3)0.54084 (17)0.5703 (3)0.0347 (6)
O10.5183 (3)0.63487 (17)0.4873 (2)0.0574 (7)
H1A0.59050.65530.43700.086*0.50
H1B0.53050.65900.56880.086*0.50
O20.3337 (3)0.74355 (14)0.3938 (3)0.0539 (6)
H20.38660.77200.45300.081*
C10.3774 (4)0.4731 (2)0.1816 (4)0.0478 (9)
H10.41550.41690.18840.057*
C20.3053 (5)0.5019 (3)0.0558 (4)0.0639 (11)
H2A0.29270.4653−0.02140.077*
C30.2515 (5)0.5865 (3)0.0458 (4)0.0685 (12)
H30.20480.6076−0.03890.082*
C40.2677 (4)0.6386 (3)0.1615 (4)0.0562 (10)
H40.23100.69510.15730.067*
C50.3394 (4)0.6055 (2)0.2841 (3)0.0394 (7)
C60.3583 (4)0.6549 (2)0.4213 (3)0.0386 (7)
C70.2392 (3)0.61766 (19)0.5177 (3)0.0353 (7)
C80.0989 (4)0.6581 (2)0.5451 (4)0.0459 (8)
H80.07000.71120.50540.055*
C90.0030 (4)0.6160 (3)0.6345 (4)0.0594 (10)
H9−0.09190.64140.65690.071*
C100.0462 (4)0.5378 (3)0.6898 (4)0.0521 (9)
H10−0.01820.50970.75000.063*
C110.1873 (4)0.5008 (2)0.6552 (3)0.0434 (8)
H110.21640.44700.69160.052*
N30.3476 (4)0.7718 (2)0.7595 (4)0.0585 (8)
O30.4512 (4)0.71600 (19)0.7535 (3)0.0755 (9)
O40.3188 (5)0.8218 (2)0.6577 (3)0.1014 (12)
O50.2759 (4)0.7785 (2)0.8634 (4)0.0834 (9)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Ni10.0362 (3)0.0326 (3)0.0319 (3)0.0023 (2)0.0050 (2)−0.0004 (2)
N10.0396 (15)0.0451 (16)0.0326 (15)0.0016 (11)0.0079 (11)−0.0016 (11)
N20.0340 (13)0.0360 (15)0.0343 (14)0.0020 (11)0.0047 (11)−0.0012 (11)
O10.0609 (16)0.0526 (16)0.0587 (16)−0.0010 (12)0.0049 (13)−0.0001 (12)
O20.0675 (17)0.0363 (13)0.0578 (16)0.0069 (12)0.0054 (12)0.0050 (11)
C10.054 (2)0.050 (2)0.040 (2)0.0031 (16)0.0081 (16)−0.0051 (16)
C20.084 (3)0.072 (3)0.036 (2)−0.001 (2)0.0032 (19)−0.0137 (19)
C30.087 (3)0.079 (3)0.038 (2)0.011 (2)−0.004 (2)0.006 (2)
C40.072 (3)0.054 (2)0.043 (2)0.0102 (19)0.0005 (18)0.0078 (17)
C50.0418 (18)0.0411 (19)0.0363 (17)0.0017 (14)0.0095 (14)0.0007 (14)
C60.0390 (18)0.0349 (18)0.0422 (18)0.0031 (14)0.0059 (14)0.0046 (14)
C70.0365 (16)0.0357 (17)0.0336 (16)0.0002 (13)0.0026 (13)−0.0053 (13)
C80.0391 (18)0.048 (2)0.050 (2)0.0069 (15)−0.0001 (15)−0.0015 (15)
C90.040 (2)0.075 (3)0.065 (2)0.0062 (19)0.0128 (18)−0.010 (2)
C100.047 (2)0.064 (2)0.047 (2)−0.0077 (18)0.0155 (16)−0.0005 (18)
C110.0485 (18)0.0451 (19)0.0370 (17)−0.0049 (16)0.0053 (14)0.0002 (15)
N30.067 (2)0.047 (2)0.061 (2)−0.0010 (16)0.0000 (17)−0.0192 (17)
O30.077 (2)0.077 (2)0.0714 (19)0.0337 (16)0.0032 (15)−0.0251 (15)
O40.173 (4)0.056 (2)0.071 (2)0.016 (2)−0.014 (2)−0.0052 (16)
O50.071 (2)0.092 (2)0.092 (2)0.0066 (16)0.0358 (18)−0.0195 (18)
Geometric parameters (Å, °) top
Ni1—N22.093 (2)C2—H2A0.9300
Ni1—N2i2.093 (2)C3—C41.367 (5)
Ni1—O12.102 (3)C3—H30.9300
Ni1—O1i2.102 (3)C4—C51.372 (4)
Ni1—N12.123 (3)C4—H40.9300
Ni1—N1i2.123 (3)C5—C61.515 (4)
N1—C51.334 (4)C6—C71.528 (4)
N1—C11.345 (4)C7—C81.380 (4)
N2—C71.333 (4)C8—C91.385 (5)
N2—C111.340 (4)C8—H80.9300
O1—C61.472 (4)C9—C101.360 (5)
O1—H1A0.8650C9—H90.9300
O1—H1B0.8625C10—C111.382 (5)
O2—C61.412 (4)C10—H100.9300
O2—H20.8200C11—H110.9300
C1—C21.377 (5)N3—O51.206 (4)
C1—H10.9300N3—O31.233 (4)
C2—C31.388 (5)N3—O41.253 (4)
N2—Ni1—N2i180.0C4—C3—C2119.5 (4)
N2—Ni1—O177.70 (10)C4—C3—H3120.3
N2i—Ni1—O1102.30 (10)C2—C3—H3120.3
N2—Ni1—O1i102.30 (10)C3—C4—C5118.5 (4)
N2i—Ni1—O1i77.70 (10)C3—C4—H4120.7
O1—Ni1—O1i180.0C5—C4—H4120.7
N2—Ni1—N185.93 (9)N1—C5—C4122.7 (3)
N2i—Ni1—N194.07 (9)N1—C5—C6113.4 (3)
O1—Ni1—N178.10 (10)C4—C5—C6123.9 (3)
O1i—Ni1—N1101.90 (10)O2—C6—O1113.6 (2)
N2—Ni1—N1i94.07 (9)O2—C6—C5109.1 (3)
N2i—Ni1—N1i85.93 (9)O1—C6—C5107.0 (2)
O1—Ni1—N1i101.90 (10)O2—C6—C7112.8 (2)
O1i—Ni1—N1i78.10 (10)O1—C6—C7106.4 (2)
N1—Ni1—N1i180.000 (1)C5—C6—C7107.6 (2)
C5—N1—C1119.1 (3)N2—C7—C8123.3 (3)
C5—N1—Ni1110.9 (2)N2—C7—C6113.0 (2)
C1—N1—Ni1130.0 (2)C8—C7—C6123.7 (3)
C7—N2—C11118.7 (3)C7—C8—C9116.8 (3)
C7—N2—Ni1111.76 (19)C7—C8—H8121.6
C11—N2—Ni1129.5 (2)C9—C8—H8121.6
C6—O1—Ni199.56 (17)C10—C9—C8120.7 (3)
C6—O1—H1A110.0C10—C9—H9119.7
Ni1—O1—H1A117.0C8—C9—H9119.7
C6—O1—H1B109.5C9—C10—C11119.0 (3)
Ni1—O1—H1B112.6C9—C10—H10120.5
H1A—O1—H1B107.8C11—C10—H10120.5
C6—O2—H2109.5N2—C11—C10121.5 (3)
N1—C1—C2121.2 (4)N2—C11—H11119.3
N1—C1—H1119.4C10—C11—H11119.3
C2—C1—H1119.4O5—N3—O3120.1 (4)
C1—C2—C3119.0 (4)O5—N3—O4120.5 (4)
C1—C2—H2A120.5O3—N3—O4119.4 (4)
C3—C2—H2A120.5
Symmetry codes: (i) −x+1, −y+1, −z+1.
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O2—H2···O40.822.222.810 (4)129
O1—H1B···O30.862.132.933 (4)155
O1—H1A···O5ii0.872.042.884 (4)165
Symmetry codes: (ii) x+1/2, −y+3/2, z−1/2.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O2—H2···O40.822.222.810 (4)129
O1—H1B···O30.862.132.933 (4)155
O1—H1A···O5i0.872.042.884 (4)165
Symmetry codes: (i) x+1/2, −y+3/2, z−1/2.
Acknowledgements top

Financial support from the Korean Environment Ministry `ET–Human Resource Development Project' and the Korean Science and Engineering Foundation (grant No. R01-2008-000-20704-0) is gratefully acknowledged.

references
References top

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