metal-organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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ISSN: 2056-9890

Poly[[bis­­[μ2-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-di­hydro­pyrido[2,3-d]pyrimidine-6-carboxyl­ato]zinc(II)] dihydrate]

aSecond Hospital, Jilin University, Changchun 130041, People's Republic of China, and bSchool of Pharmaceutical Science, Harbin Medical University, Harbin, 150086, People's Republic of China
*Correspondence e-mail: anzhe6409@sina.com

(Received 22 August 2009; accepted 12 September 2009; online 19 September 2009)

The title compound, {[Zn(C14H16N5O3)2]·2H2O}n or [Zn(ppa)2]·2H2O}n, where ppa = 8-ethyl-5,8-dihydro-5-oxo-2-(1-piperazin­yl)-pyrido(2,3-d)-pyrimidine-6-carboxyl­ate, was synthesized under hydro­thermal conditions. The ZnII atom (site symmetry [\overline{1}]) exhibits a distorted trans-ZnN2O4 octa­hedral geometry defined by two monodentate N-bonded and two bidentate O,O-bonded ppa monoanions. The extended two-dimensional structure arising from this connectivity is a square grid and the disordered uncoordinated water mol­ecules occupy cavities within the grid. An N—H⋯O hydrogen bond occurs.

Related literature

For manganese complexes of the ppa anion, see: Huang et al. (2008[Huang, J., Hu, W.-P. & An, Z. (2008). Acta Cryst. E64, m547.]). For background to the medicinal uses of pipemidic acid, see: Mizuki et al. (1996[Mizuki, Y., Fujiwara, I. & Yamaguchi, T. (1996). J. Antimicrob. Chemother. 37 Suppl. A, 41-45.]).

[Scheme 1]

Experimental

Crystal data
  • [Zn(C14H16N5O3)2]·2H2O

  • Mr = 704.05

  • Monoclinic, P 21 /c

  • a = 6.1146 (12) Å

  • b = 21.424 (4) Å

  • c = 12.577 (3) Å

  • β = 101.10 (3)°

  • V = 1616.9 (6) Å3

  • Z = 2

  • Mo Kα radiation

  • μ = 0.82 mm−1

  • T = 295 K

  • 0.36 × 0.28 × 0.18 mm

Data collection
  • Rigaku R-AXIS RAPID diffractometer

  • Absorption correction: multi-scan (CrystalStructure; Rigaku/MSC, 2002[Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA.]) Tmin = 0.756, Tmax = 0.866

  • 15697 measured reflections

  • 3684 independent reflections

  • 2570 reflections with I > 2σ(I)

  • Rint = 0.045

Refinement
  • R[F2 > 2σ(F2)] = 0.057

  • wR(F2) = 0.210

  • S = 1.06

  • 3684 reflections

  • 228 parameters

  • 1 restraint

  • H atoms treated by a mixture of independent and constrained refinement

  • Δρmax = 0.83 e Å−3

  • Δρmin = −0.83 e Å−3

Table 1
Selected bond lengths (Å)

Zn1—O1 2.031 (3)
Zn1—O3 2.107 (2)
Zn1—N5i 2.275 (3)
Symmetry code: (i) [x+1, -y+{\script{1\over 2}}, z+{\script{1\over 2}}].

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
N5—H5N⋯O2ii 0.91 (5) 2.28 (5) 3.168 (5) 166 (4)
Symmetry code: (ii) [-x+1, y+{\script{1\over 2}}, -z+{\script{1\over 2}}].

Data collection: RAPID-AUTO (Rigaku, 1998[Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.]); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002[Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA.]); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: ORTEPII (Johnson, 1976[Johnson, C. K. (1976). ORTEPII. Report ORNL-5138. Oak Ridge National Laboratory, Tennessee, USA.]); software used to prepare material for publication: SHELXL97.

Supporting information


Comment top

Pipemidic acid (Hppa, C14H16N5O3, 8-Ethyl-5,8-dihydro-5-oxo-2- (1-piperazinyl)-pyrido(2,3 - d)-pyrimidine-6-carboxylic acid) is member of a class of quinolones used to treat infections (Mizuki et al., 1996). The manganese complex of the ppa anion has been reported (Huang et al., 2008); the title zinc(II) complex is reported here (Fig. 1).

The zinc(II) atom is coordinated by four oxygen atoms and two N atoms from four ppa ligands (two monodentate-N and two O,O-bidentate) to form a square grid (Fig. 2). The disordered, uncoordinated, water molecules occupy the cavities.

Related literature top

For manganese complexes of the ppa anion, see: Huang et al. (2008). For background to the medicinal uses of pipemidic acid, see: Mizuki et al. (1996).

Experimental top

A mixture of Zn(CH3COO)2.2H2O (0.055 g, 0.25 mmol), Hppa (0.15 g, 0.5 mmol), sodium hydroxide (0.04 g, 1 mmol) and water (12 ml) was stirred for 30 min in air. The mixture was then transferred to a 23 ml Teflon-lined hydrothermal bomb. The bomb was kept at 433 K for 72 h under autogenous pressure. Upon cooling, colourless prisms of (I) were obtained from the reaction mixture.

Refinement top

The carbon-bound H atoms were positioned geometrically (C—H = 0.93–0.97 Å) and were included in the refinement in the riding model approximation, with Uiso(H) = 1.2Ueq(C). The H on Nitrogen atoms were located in a difference Fourier map, and were refined with a distance restraint of N—H = 0.86 (1)Å and with Uiso(H) = 1.2Ueq(N).

The water H atoms could not be placed due to the disorder of the O atoms.

Computing details top

Data collection: RAPID-AUTO (Rigaku, 1998); cell refinement: RAPID-AUTO (Rigaku , 1998); data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The asymmetric unit of (I) extended to show the zinc coordination sphere showing the showing 50% displacement ellipsoids (water molecule O atoms have been omitted for clarity).
[Figure 2] Fig. 2. A view of part of a two-dimensional polymeric sheet in (I) showing the square-grid connectivity (H atoms and water molecule O atoms omitted for clarity).
Poly[[bis[µ2-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylato]zinc(II)] dihydrate] top
Crystal data top
[Zn(C14H16N5O3)2]·2H2OZ = 2
Mr = 704.05F(000) = 728
Monoclinic, P21/cDx = 1.442 Mg m3
Hall symbol: -P 2ybcMo Kα radiation, λ = 0.71073 Å
a = 6.1146 (12) ŵ = 0.82 mm1
b = 21.424 (4) ÅT = 295 K
c = 12.577 (3) ÅPrism, colorless
β = 101.10 (3)°0.36 × 0.28 × 0.18 mm
V = 1616.9 (6) Å3
Data collection top
Rigaku R-AXIS RAPID
diffractometer
3684 independent reflections
Radiation source: fine-focus sealed tube2570 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.045
Detector resolution: 10.000 pixels mm-1θmax = 27.5°, θmin = 3.3°
ω scansh = 77
Absorption correction: multi-scan
(CrystalStructure; Rigaku/MSC, 2002)
k = 2725
Tmin = 0.756, Tmax = 0.866l = 1616
15697 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.057Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.210H atoms treated by a mixture of independent and constrained refinement
S = 1.06 w = 1/[σ2(Fo2) + (0.1254P)2 + 1.7801P]
where P = (Fo2 + 2Fc2)/3
3684 reflections(Δ/σ)max < 0.001
228 parametersΔρmax = 0.83 e Å3
1 restraintΔρmin = 0.83 e Å3
Crystal data top
[Zn(C14H16N5O3)2]·2H2OV = 1616.9 (6) Å3
Mr = 704.05Z = 2
Monoclinic, P21/cMo Kα radiation
a = 6.1146 (12) ŵ = 0.82 mm1
b = 21.424 (4) ÅT = 295 K
c = 12.577 (3) Å0.36 × 0.28 × 0.18 mm
β = 101.10 (3)°
Data collection top
Rigaku R-AXIS RAPID
diffractometer
3684 independent reflections
Absorption correction: multi-scan
(CrystalStructure; Rigaku/MSC, 2002)
2570 reflections with I > 2σ(I)
Tmin = 0.756, Tmax = 0.866Rint = 0.045
15697 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0571 restraint
wR(F2) = 0.210H atoms treated by a mixture of independent and constrained refinement
S = 1.06Δρmax = 0.83 e Å3
3684 reflectionsΔρmin = 0.83 e Å3
228 parameters
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
O1W0.045 (3)0.0632 (10)0.0746 (11)0.187 (8)0.50
O2W0.340 (5)0.0205 (10)0.0364 (12)0.251 (14)0.50
Zn10.50000.00000.50000.0265 (2)
O10.6981 (4)0.00325 (10)0.3877 (2)0.0271 (6)
O20.8573 (7)0.01818 (18)0.2500 (3)0.0616 (11)
O30.3495 (5)0.07935 (11)0.4179 (2)0.0317 (6)
N10.4916 (7)0.17173 (17)0.1532 (3)0.0481 (10)
N20.2252 (6)0.24690 (15)0.1677 (3)0.0386 (8)
N30.0127 (6)0.23572 (16)0.2988 (3)0.0436 (9)
N40.0227 (6)0.32384 (15)0.1907 (3)0.0349 (8)
N50.2450 (5)0.43908 (14)0.1084 (2)0.0273 (7)
H5N0.154 (8)0.466 (2)0.152 (4)0.065 (16)*
C10.7147 (7)0.02891 (17)0.3064 (3)0.0316 (8)
C20.5658 (7)0.08450 (17)0.2772 (3)0.0317 (8)
C30.3947 (6)0.10453 (16)0.3346 (3)0.0271 (7)
C40.2744 (7)0.15974 (16)0.2910 (3)0.0303 (8)
C50.0937 (8)0.18359 (19)0.3318 (3)0.0398 (10)
H50.04540.16100.38610.048*
C60.0671 (7)0.26762 (18)0.2197 (3)0.0327 (8)
C70.3246 (7)0.19340 (18)0.2034 (3)0.0360 (9)
C80.6010 (8)0.1189 (2)0.1902 (4)0.0457 (11)
H80.70960.10470.15350.055*
C90.5540 (11)0.2051 (3)0.0585 (5)0.0665 (16)
H9B0.53060.24960.06530.080*
H9A0.71070.19830.05820.080*
C100.4247 (16)0.1834 (5)0.0401 (7)0.116 (3)
H10C0.45660.14010.04960.174*
H10B0.46050.20710.09930.174*
H10A0.26930.18830.03850.174*
C110.1608 (8)0.3572 (2)0.2553 (4)0.0475 (11)
H11B0.06730.38390.30770.057*
H11A0.23460.32750.29470.057*
C120.3356 (7)0.3970 (2)0.1813 (4)0.0398 (10)
H12B0.44290.36940.13790.048*
H12A0.41500.42180.22620.048*
C130.1090 (6)0.40176 (17)0.0469 (3)0.0317 (8)
H13A0.04050.42950.00180.038*
H13B0.20570.37340.00060.038*
C140.0708 (7)0.36460 (18)0.1185 (4)0.0369 (9)
H14B0.15000.33970.07370.044*
H14A0.17680.39290.16100.044*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O1W0.209 (18)0.28 (2)0.094 (9)0.004 (16)0.091 (11)0.013 (12)
O2W0.47 (4)0.202 (17)0.077 (9)0.11 (2)0.049 (16)0.057 (12)
Zn10.0317 (4)0.0194 (3)0.0294 (3)0.0006 (2)0.0079 (2)0.0028 (2)
O10.0276 (13)0.0218 (12)0.0333 (14)0.0019 (9)0.0089 (10)0.0029 (10)
O20.073 (3)0.062 (2)0.060 (2)0.040 (2)0.0387 (19)0.0275 (18)
O30.0378 (15)0.0223 (12)0.0368 (14)0.0092 (10)0.0116 (11)0.0121 (11)
N10.065 (3)0.0398 (19)0.046 (2)0.0223 (18)0.0265 (19)0.0195 (17)
N20.051 (2)0.0282 (16)0.0400 (18)0.0135 (15)0.0160 (16)0.0124 (14)
N30.044 (2)0.0361 (18)0.055 (2)0.0166 (16)0.0219 (17)0.0231 (17)
N40.0390 (19)0.0283 (16)0.0415 (18)0.0096 (14)0.0177 (15)0.0119 (14)
N50.0265 (16)0.0219 (14)0.0324 (15)0.0064 (12)0.0028 (12)0.0034 (13)
C10.037 (2)0.0274 (18)0.0316 (18)0.0046 (15)0.0112 (16)0.0002 (16)
C20.038 (2)0.0238 (17)0.0354 (19)0.0070 (15)0.0110 (16)0.0035 (15)
C30.0283 (18)0.0219 (16)0.0302 (17)0.0007 (13)0.0032 (14)0.0013 (14)
C40.036 (2)0.0242 (17)0.0318 (18)0.0021 (15)0.0087 (15)0.0055 (15)
C50.048 (3)0.033 (2)0.043 (2)0.0088 (18)0.0188 (19)0.0174 (18)
C60.033 (2)0.0273 (18)0.0380 (19)0.0046 (15)0.0078 (16)0.0077 (16)
C70.044 (2)0.0323 (19)0.0347 (19)0.0092 (17)0.0137 (17)0.0067 (17)
C80.060 (3)0.037 (2)0.046 (2)0.018 (2)0.026 (2)0.0107 (19)
C90.083 (4)0.063 (3)0.062 (3)0.030 (3)0.038 (3)0.024 (3)
C100.117 (7)0.144 (9)0.090 (5)0.031 (6)0.028 (5)0.024 (6)
C110.055 (3)0.045 (2)0.047 (2)0.025 (2)0.021 (2)0.020 (2)
C120.040 (2)0.036 (2)0.047 (2)0.0157 (17)0.0179 (18)0.0161 (19)
C130.035 (2)0.0247 (17)0.0366 (19)0.0101 (15)0.0094 (16)0.0081 (15)
C140.033 (2)0.0293 (18)0.051 (2)0.0043 (16)0.0147 (17)0.0119 (18)
Geometric parameters (Å, º) top
Zn1—O12.031 (3)C2—C81.370 (6)
Zn1—O1i2.031 (3)C2—C31.446 (5)
Zn1—O3i2.107 (2)C3—C41.444 (5)
Zn1—O32.107 (2)C4—C71.399 (5)
Zn1—N5ii2.275 (3)C4—C51.401 (6)
Zn1—N5iii2.275 (3)C5—H50.9300
O1—C11.253 (5)C8—H80.9300
O2—C11.247 (5)C9—C101.415 (11)
O3—C31.256 (4)C9—H9B0.9700
N1—C81.351 (5)C9—H9A0.9700
N1—C71.381 (5)C10—H10C0.9600
N1—C91.500 (6)C10—H10B0.9600
N2—C71.334 (5)C10—H10A0.9600
N2—C61.343 (5)C11—C121.534 (5)
N3—C51.319 (5)C11—H11B0.9700
N3—C61.373 (5)C11—H11A0.9700
N4—C61.345 (5)C12—H12B0.9700
N4—C141.454 (5)C12—H12A0.9700
N4—C111.466 (5)C13—C141.508 (5)
N5—C121.468 (5)C13—H13A0.9700
N5—C131.475 (5)C13—H13B0.9700
N5—Zn1iv2.275 (3)C14—H14B0.9700
N5—H5N0.900 (10)C14—H14A0.9700
C1—C21.501 (5)
O1—Zn1—O1i180.0N2—C6—N4117.3 (3)
O1—Zn1—O3i92.90 (10)N2—C6—N3125.3 (4)
O1i—Zn1—O3i87.10 (10)N4—C6—N3117.3 (4)
O1—Zn1—O387.10 (10)N2—C7—N1117.6 (3)
O1i—Zn1—O392.90 (10)N2—C7—C4123.6 (4)
O3i—Zn1—O3180.0N1—C7—C4118.7 (3)
O1—Zn1—N5ii89.74 (11)N1—C8—C2125.6 (4)
O1i—Zn1—N5ii90.26 (11)N1—C8—H8117.2
O3i—Zn1—N5ii90.86 (11)C2—C8—H8117.2
O3—Zn1—N5ii89.14 (11)C10—C9—N1110.8 (7)
O1—Zn1—N5iii90.26 (11)C10—C9—H9B109.5
O1i—Zn1—N5iii89.74 (11)N1—C9—H9B109.5
O3i—Zn1—N5iii89.14 (11)C10—C9—H9A109.5
O3—Zn1—N5iii90.86 (11)N1—C9—H9A109.5
N5ii—Zn1—N5iii180.0H9B—C9—H9A108.1
C1—O1—Zn1134.5 (2)C9—C10—H10C109.5
C3—O3—Zn1127.6 (2)C9—C10—H10B109.5
C8—N1—C7119.0 (3)H10C—C10—H10B109.5
C8—N1—C9119.2 (4)C9—C10—H10A109.5
C7—N1—C9121.8 (4)H10C—C10—H10A109.5
C7—N2—C6116.3 (3)H10B—C10—H10A109.5
C5—N3—C6115.3 (4)N4—C11—C12110.0 (3)
C6—N4—C14121.2 (3)N4—C11—H11B109.7
C6—N4—C11122.4 (3)C12—C11—H11B109.7
C14—N4—C11113.0 (3)N4—C11—H11A109.7
C12—N5—C13108.3 (3)C12—C11—H11A109.7
C12—N5—Zn1iv115.4 (2)H11B—C11—H11A108.2
C13—N5—Zn1iv112.8 (2)N5—C12—C11114.7 (3)
C12—N5—H5N106 (4)N5—C12—H12B108.6
C13—N5—H5N108 (4)C11—C12—H12B108.6
Zn1iv—N5—H5N106 (4)N5—C12—H12A108.6
O2—C1—O1122.6 (4)C11—C12—H12A108.6
O2—C1—C2117.7 (3)H12B—C12—H12A107.6
O1—C1—C2119.7 (3)N5—C13—C14113.1 (3)
C8—C2—C3118.6 (3)N5—C13—H13A109.0
C8—C2—C1116.2 (3)C14—C13—H13A109.0
C3—C2—C1125.2 (3)N5—C13—H13B109.0
O3—C3—C4119.4 (3)C14—C13—H13B109.0
O3—C3—C2125.8 (3)H13A—C13—H13B107.8
C4—C3—C2114.7 (3)N4—C14—C13111.2 (3)
C7—C4—C5114.1 (3)N4—C14—H14B109.4
C7—C4—C3123.2 (4)C13—C14—H14B109.4
C5—C4—C3122.6 (3)N4—C14—H14A109.4
N3—C5—C4124.7 (4)C13—C14—H14A109.4
N3—C5—H5117.6H14B—C14—H14A108.0
C4—C5—H5117.6
O1i—Zn1—O1—C150 (2)C11—N4—C6—N2167.0 (4)
O3i—Zn1—O1—C1179.5 (4)C14—N4—C6—N3171.7 (4)
O3—Zn1—O1—C10.5 (4)C11—N4—C6—N314.0 (6)
N5ii—Zn1—O1—C188.7 (4)C5—N3—C6—N27.0 (7)
N5iii—Zn1—O1—C191.3 (4)C5—N3—C6—N4174.0 (4)
O1—Zn1—O3—C30.4 (3)C6—N2—C7—N1178.5 (4)
O1i—Zn1—O3—C3179.6 (3)C6—N2—C7—C41.0 (6)
O3i—Zn1—O3—C365 (100)C8—N1—C7—N2177.5 (4)
N5ii—Zn1—O3—C389.4 (3)C9—N1—C7—N22.7 (7)
N5iii—Zn1—O3—C390.6 (3)C8—N1—C7—C40.1 (7)
Zn1—O1—C1—O2178.2 (3)C9—N1—C7—C4179.7 (5)
Zn1—O1—C1—C21.0 (6)C5—C4—C7—N26.2 (6)
O2—C1—C2—C80.1 (6)C3—C4—C7—N2174.9 (4)
O1—C1—C2—C8177.1 (4)C5—C4—C7—N1176.3 (4)
O2—C1—C2—C3178.8 (4)C3—C4—C7—N12.5 (6)
O1—C1—C2—C31.6 (6)C7—N1—C8—C21.9 (8)
Zn1—O3—C3—C4179.0 (2)C9—N1—C8—C2178.3 (5)
Zn1—O3—C3—C21.1 (5)C3—C2—C8—N11.4 (7)
C8—C2—C3—O3177.0 (4)C1—C2—C8—N1177.4 (4)
C1—C2—C3—O31.7 (6)C8—N1—C9—C1090.7 (7)
C8—C2—C3—C41.0 (6)C7—N1—C9—C1089.1 (7)
C1—C2—C3—C4179.7 (4)C6—N4—C11—C12148.9 (4)
O3—C3—C4—C7175.2 (4)C14—N4—C11—C1251.8 (5)
C2—C3—C4—C72.9 (6)C13—N5—C12—C1153.7 (5)
O3—C3—C4—C56.0 (6)Zn1iv—N5—C12—C11178.8 (3)
C2—C3—C4—C5175.9 (4)N4—C11—C12—N552.7 (5)
C6—N3—C5—C40.8 (7)C12—N5—C13—C1455.0 (4)
C7—C4—C5—N35.2 (7)Zn1iv—N5—C13—C14176.0 (2)
C3—C4—C5—N3175.9 (4)C6—N4—C14—C13145.9 (4)
C7—N2—C6—N4174.8 (4)C11—N4—C14—C1354.5 (5)
C7—N2—C6—N36.2 (7)N5—C13—C14—N456.5 (5)
C14—N4—C6—N29.3 (6)
Symmetry codes: (i) x+1, y, z+1; (ii) x, y1/2, z+1/2; (iii) x+1, y+1/2, z+1/2; (iv) x, y+1/2, z+1/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N5—H5N···O2v0.91 (5)2.28 (5)3.168 (5)166 (4)
Symmetry code: (v) x+1, y+1/2, z+1/2.

Experimental details

Crystal data
Chemical formula[Zn(C14H16N5O3)2]·2H2O
Mr704.05
Crystal system, space groupMonoclinic, P21/c
Temperature (K)295
a, b, c (Å)6.1146 (12), 21.424 (4), 12.577 (3)
β (°) 101.10 (3)
V3)1616.9 (6)
Z2
Radiation typeMo Kα
µ (mm1)0.82
Crystal size (mm)0.36 × 0.28 × 0.18
Data collection
DiffractometerRigaku R-AXIS RAPID
diffractometer
Absorption correctionMulti-scan
(CrystalStructure; Rigaku/MSC, 2002)
Tmin, Tmax0.756, 0.866
No. of measured, independent and
observed [I > 2σ(I)] reflections
15697, 3684, 2570
Rint0.045
(sin θ/λ)max1)0.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.057, 0.210, 1.06
No. of reflections3684
No. of parameters228
No. of restraints1
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.83, 0.83

Computer programs: RAPID-AUTO (Rigaku, 1998), RAPID-AUTO (Rigaku , 1998), CrystalStructure (Rigaku/MSC, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEPII (Johnson, 1976).

Selected bond lengths (Å) top
Zn1—O12.031 (3)Zn1—N5i2.275 (3)
Zn1—O32.107 (2)
Symmetry code: (i) x+1, y+1/2, z+1/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N5—H5N···O2ii0.91 (5)2.28 (5)3.168 (5)166 (4)
Symmetry code: (ii) x+1, y+1/2, z+1/2.
 

Acknowledgements

The authors thank the Innovation Science Foundation of Harbin Medical University for financial support (grant No. 060041).

References

First citationHuang, J., Hu, W.-P. & An, Z. (2008). Acta Cryst. E64, m547.  Web of Science CSD CrossRef IUCr Journals Google Scholar
First citationJohnson, C. K. (1976). ORTEPII. Report ORNL-5138. Oak Ridge National Laboratory, Tennessee, USA.  Google Scholar
First citationMizuki, Y., Fujiwara, I. & Yamaguchi, T. (1996). J. Antimicrob. Chemother. 37 Suppl. A, 41–45.  CrossRef Google Scholar
First citationRigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.  Google Scholar
First citationRigaku/MSC (2002). CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA.  Google Scholar
First citationSheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.  Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar

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