organic compounds
N′-[(E)-2-Hydroxy-5-iodobenzylidene]furan-2-carbohydrazide monohydrate
aYoung Researchers Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran, bDepartment of Chemistry, University of Zanjan, 45195-313 Zanjan, Iran, cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and dChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
*Correspondence e-mail: edward.tiekink@gmail.com
The organic molecule of the title monohydrate, C12H9IN2O3·H2O, features a disordered furyl ring with the major component [site occupancy = 0.575 (18)] having the carbonyl O and furyl O atoms syn, and the other conformation having these atoms anti. The molecule is slightly twisted with the dihedral angle between the benzene and furyl rings being 10.3 (6)° (major component). An intramolecular O—H⋯N(imine) hydrogen bond is formed. In the crystal, the water molecule accepts a hydrogen bond from an amine H atom, and forms two O—H⋯O(carbonyl) hydrogen bonds, thereby linking three different carbohydrazide molecules. The result is a supramolecular layer parallel to (001). The closest contacts between layers are of the type I⋯I, at a distance of 3.6986 (6) Å.
Related literature
For historical background to aroylhydrazones, see: Craliz et al. (1955). For the structure of the isomorphous bromido derivative, see: Tai et al. (2007). For the structures of related carbohydrazides, see: Abdel-Aziz et al. (2011); Bikas et al. (2012). For the synthesis of a precursor molecule, see: Nielsen & Gothelf (2001).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536811055826/hb6573sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811055826/hb6573Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811055826/hb6573Isup3.cml
2-Hydroxy-5-iodobenzaldehyde was synthesized according to the reported procedure by Nielsen & Gothelf (2001). For preparing the title compound a methanol (10 ml) solution of 2-hydroxy-5-iodobenzaldehyde (1.5 mmol) was added drop-wise to a methanol solution (10 ml) of 2-furanecarboxylic acid hydrazide (1.5 mmol), and the mixture was refluxed for 3 h. The solution was then evaporated on a steam bath to 5 cm3 and cooled to room temperature. The light-yellow precipitates of the title compound were separated and filtered off, washed with 3 ml of cooled methanol and then dried in air. Colourless crystals were obtained from its methanol:water (98:2 v/v) solution by slow solvent evaporation. Yield: 86%. IR (cm-1): 3447 (w, broad, —OH), 3262 (m, N—H); 1668 (versus, C═ O); 1609 (s, C═N(azomethine)); 952 (m, N—N); 1274, 1351 (versus, C—O enolate). 1H NMR (250.13 MHz; DMSO-d6): δ 12.16 (s, 1H, CO—NH—); 11.15 (s, 1H, —OH); 8.57 (s, 1H); 7.92 (s, 1H); 7.88 (s, 1H); 7.51 (d, 1H, J = 8.5 Hz); 7.30 (s, 1H); 7.74 (d, 1H, J = 8.75 Hz; 6.67 (s, 1H) p.p.m.. 1H NMR (250.13 MHz; DMSO-d6 + D2O): δ 8.85 (s, 1H); 7.83 (s, 1H); 7382 (s, 1H); 7.24 (s, 1H); 6.72 (d, 1H, J = 8.75 Hz); 6.64 (s, 1H) p.p.m.. 13C NMR (DMSO; 62.90 MHz): δ 81.72, 112.61, 115.82, 119.48, 122.35, 136.62, 139.76, 145.99, 146.52, 146.63, 154.56 and 157.35 p.p.m..
Carbon-bound H-atoms were placed in calculated positions [C—H 0.95 Å, N—H 0.88 Å, O—H 0.84%A; Uiso(H) 1.2Ueq(C,N,O)] and were included in the
in the riding model approximation.The H-atoms of the water molecule were placed in chemically sensible positions on the basis of hydrogen bonds but were not refined; Uiso(H) = 1.5Ueq(O).
The furyl ring is disordered over two positions in a 0.575 (18): 0.425 (18) ratio. The C—O distances were restrained to 1.37±0.01 Å, the carbon–carbon single-bond distances to 1.42±0.01 Å and the carbon–carbon double-bond distances to 1.34±0.01 Å. The α-carbon atom is ordered. The Uiso of the atoms comprising the minor component were set to Ueq of those of the atoms of the major component which were refined anisotropically.
The final difference Fourier map had a peak at approximately 1 Å from I1 and a hole at approximately 1 Å from I1.
Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C12H9IN2O3·H2O | F(000) = 728 |
Mr = 374.13 | Dx = 1.919 Mg m−3 |
Orthorhombic, P212121 | Cu Kα radiation, λ = 1.54184 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2924 reflections |
a = 4.8607 (2) Å | θ = 4.1–76.3° |
b = 12.5873 (4) Å | µ = 19.57 mm−1 |
c = 21.1627 (9) Å | T = 100 K |
V = 1294.80 (9) Å3 | Prism, colourless |
Z = 4 | 0.20 × 0.08 × 0.04 mm |
Agilent SuperNova Dual diffractometer with an Atlas detector | 2641 independent reflections |
Radiation source: SuperNova (Cu) X-ray Source | 2575 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.039 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 76.5°, θmin = 4.1° |
ω scan | h = −6→5 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −15→10 |
Tmin = 0.111, Tmax = 0.508 | l = −18→26 |
4758 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.059 | H-atom parameters constrained |
wR(F2) = 0.158 | w = 1/[σ2(Fo2) + (0.127P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.09 | (Δ/σ)max = 0.001 |
2641 reflections | Δρmax = 3.22 e Å−3 |
186 parameters | Δρmin = −1.82 e Å−3 |
34 restraints | Absolute structure: Flack (1983), 1050 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.020 (12) |
C12H9IN2O3·H2O | V = 1294.80 (9) Å3 |
Mr = 374.13 | Z = 4 |
Orthorhombic, P212121 | Cu Kα radiation |
a = 4.8607 (2) Å | µ = 19.57 mm−1 |
b = 12.5873 (4) Å | T = 100 K |
c = 21.1627 (9) Å | 0.20 × 0.08 × 0.04 mm |
Agilent SuperNova Dual diffractometer with an Atlas detector | 2641 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 2575 reflections with I > 2σ(I) |
Tmin = 0.111, Tmax = 0.508 | Rint = 0.039 |
4758 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | H-atom parameters constrained |
wR(F2) = 0.158 | Δρmax = 3.22 e Å−3 |
S = 1.09 | Δρmin = −1.82 e Å−3 |
2641 reflections | Absolute structure: Flack (1983), 1050 Friedel pairs |
186 parameters | Absolute structure parameter: −0.020 (12) |
34 restraints |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
I1 | 1.44774 (10) | 1.14557 (3) | 0.97807 (2) | 0.0213 (2) | |
O1 | 0.7447 (14) | 0.7625 (4) | 0.8846 (3) | 0.0239 (12) | |
H1 | 0.7161 | 0.7655 | 0.8455 | 0.036* | |
O2 | 0.1609 (12) | 0.7779 (4) | 0.7326 (3) | 0.0205 (10) | |
O3 | −0.214 (2) | 0.8642 (7) | 0.6509 (4) | 0.016 (2) | 0.575 (18) |
O3' | −0.043 (3) | 1.0345 (7) | 0.6855 (7) | 0.016* | 0.425 (18) |
O1W | 0.3405 (13) | 1.1654 (4) | 0.7575 (3) | 0.0265 (12) | |
H11 | 0.4756 | 1.2055 | 0.7641 | 0.040* | |
H12 | 0.1948 | 1.1982 | 0.7664 | 0.040* | |
N1 | 0.5129 (13) | 0.9031 (5) | 0.8010 (3) | 0.0170 (12) | |
N2 | 0.3308 (13) | 0.9420 (4) | 0.7566 (3) | 0.0158 (11) | |
H2 | 0.3265 | 1.0105 | 0.7483 | 0.019* | |
C1 | 0.8927 (16) | 0.8472 (6) | 0.9027 (3) | 0.0196 (14) | |
C2 | 1.0829 (17) | 0.8331 (6) | 0.9520 (4) | 0.0222 (14) | |
H2A | 1.1050 | 0.7648 | 0.9704 | 0.027* | |
C3 | 1.2403 (16) | 0.9185 (6) | 0.9745 (3) | 0.0196 (14) | |
H3 | 1.3645 | 0.9086 | 1.0087 | 0.024* | |
C4 | 1.2132 (15) | 1.0178 (6) | 0.9464 (3) | 0.0168 (13) | |
C5 | 1.0320 (17) | 1.0338 (5) | 0.8971 (3) | 0.0176 (13) | |
H5 | 1.0188 | 1.1018 | 0.8779 | 0.021* | |
C6 | 0.8665 (15) | 0.9496 (6) | 0.8753 (3) | 0.0165 (13) | |
C7 | 0.6706 (16) | 0.9737 (6) | 0.8255 (3) | 0.0168 (13) | |
H7 | 0.6588 | 1.0447 | 0.8105 | 0.020* | |
C8 | 0.1574 (17) | 0.8747 (6) | 0.7254 (3) | 0.0184 (13) | |
C9 | −0.0322 (15) | 0.9270 (5) | 0.6827 (3) | 0.0166 (13) | |
C10 | −0.085 (3) | 1.0323 (8) | 0.6628 (8) | 0.024 (3) | 0.575 (18) |
H10 | 0.0141 | 1.0934 | 0.6761 | 0.028* | 0.575 (18) |
C10' | −0.226 (5) | 0.8865 (16) | 0.6390 (12) | 0.024* | 0.425 (18) |
H10' | −0.2631 | 0.8141 | 0.6297 | 0.028* | 0.425 (18) |
C11 | −0.298 (3) | 1.0318 (11) | 0.6217 (7) | 0.021 (3) | 0.575 (18) |
H11A | −0.3751 | 1.0920 | 0.6012 | 0.025* | 0.575 (18) |
C11' | −0.345 (4) | 0.9727 (17) | 0.6138 (9) | 0.021* | 0.425 (18) |
H11' | −0.4821 | 0.9720 | 0.5819 | 0.025* | 0.425 (18) |
C12 | −0.384 (3) | 0.9257 (11) | 0.6150 (5) | 0.018 (3) | 0.575 (18) |
H12A | −0.5336 | 0.9012 | 0.5901 | 0.022* | 0.575 (18) |
C12' | −0.233 (4) | 1.0650 (16) | 0.6422 (9) | 0.018* | 0.425 (18) |
H12' | −0.2832 | 1.1362 | 0.6325 | 0.022* | 0.425 (18) |
U11 | U22 | U33 | U12 | U13 | U23 | |
I1 | 0.0259 (3) | 0.0187 (3) | 0.0192 (3) | 0.00161 (17) | −0.00272 (17) | −0.00437 (15) |
O1 | 0.036 (3) | 0.015 (2) | 0.021 (3) | −0.005 (2) | −0.005 (2) | 0.002 (2) |
O2 | 0.022 (2) | 0.013 (2) | 0.026 (3) | 0.002 (2) | −0.001 (2) | −0.0006 (19) |
O3 | 0.023 (4) | 0.018 (4) | 0.006 (4) | 0.004 (4) | −0.006 (3) | −0.004 (3) |
O1W | 0.027 (3) | 0.013 (2) | 0.039 (3) | −0.001 (2) | −0.002 (3) | −0.004 (2) |
N1 | 0.023 (3) | 0.017 (2) | 0.012 (2) | 0.002 (2) | 0.001 (2) | −0.001 (2) |
N2 | 0.022 (3) | 0.010 (2) | 0.015 (2) | 0.001 (2) | −0.003 (2) | −0.001 (2) |
C1 | 0.024 (4) | 0.019 (3) | 0.016 (3) | −0.002 (3) | 0.001 (3) | 0.000 (3) |
C2 | 0.032 (4) | 0.016 (3) | 0.019 (3) | 0.000 (3) | −0.004 (3) | 0.003 (3) |
C3 | 0.023 (3) | 0.024 (4) | 0.012 (3) | 0.000 (3) | −0.004 (3) | 0.003 (3) |
C4 | 0.021 (3) | 0.014 (3) | 0.015 (3) | −0.002 (3) | 0.001 (3) | −0.006 (2) |
C5 | 0.026 (3) | 0.014 (3) | 0.012 (3) | 0.001 (3) | 0.000 (3) | −0.002 (2) |
C6 | 0.016 (3) | 0.017 (3) | 0.016 (3) | 0.003 (3) | 0.000 (3) | 0.001 (2) |
C7 | 0.021 (3) | 0.016 (3) | 0.013 (3) | 0.002 (3) | 0.001 (3) | 0.001 (2) |
C8 | 0.020 (3) | 0.020 (3) | 0.015 (3) | 0.003 (3) | 0.001 (3) | −0.002 (3) |
C9 | 0.021 (3) | 0.014 (3) | 0.015 (3) | 0.003 (3) | 0.001 (3) | −0.005 (2) |
C10 | 0.031 (7) | 0.019 (5) | 0.020 (6) | 0.000 (5) | −0.007 (6) | −0.003 (5) |
C11 | 0.025 (6) | 0.018 (6) | 0.021 (6) | 0.005 (5) | −0.002 (5) | 0.005 (5) |
C12 | 0.029 (6) | 0.019 (6) | 0.007 (4) | −0.003 (5) | −0.007 (4) | 0.000 (4) |
I1—C4 | 2.082 (7) | C3—H3 | 0.9500 |
O1—C1 | 1.342 (9) | C4—C5 | 1.379 (10) |
O1—H1 | 0.8400 | C5—C6 | 1.409 (11) |
O2—C8 | 1.228 (9) | C5—H5 | 0.9500 |
O3—C9 | 1.363 (8) | C6—C7 | 1.451 (10) |
O3—C12 | 1.363 (9) | C7—H7 | 0.9500 |
O3'—C9 | 1.355 (8) | C8—C9 | 1.449 (10) |
O3'—C12' | 1.358 (9) | C9—C10 | 1.413 (9) |
O1W—H11 | 0.8402 | C9—C10' | 1.413 (10) |
O1W—H12 | 0.8409 | C10—C11 | 1.353 (9) |
N1—C7 | 1.283 (10) | C10—H10 | 0.9500 |
N1—N2 | 1.381 (8) | C10'—C11' | 1.341 (10) |
N2—C8 | 1.365 (10) | C10'—H10' | 0.9500 |
N2—H2 | 0.8800 | C11—C12 | 1.407 (9) |
C1—C2 | 1.406 (10) | C11—H11A | 0.9500 |
C1—C6 | 1.418 (10) | C11'—C12' | 1.415 (10) |
C2—C3 | 1.402 (10) | C11'—H11' | 0.9500 |
C2—H2A | 0.9500 | C12—H12A | 0.9500 |
C3—C4 | 1.391 (9) | C12'—H12' | 0.9500 |
C1—O1—H1 | 109.5 | C6—C7—H7 | 118.6 |
C9—O3—C12 | 109.8 (8) | O2—C8—N2 | 123.1 (7) |
C9—O3'—C12' | 106.2 (12) | O2—C8—C9 | 122.5 (7) |
H11—O1W—H12 | 109.0 | N2—C8—C9 | 114.4 (6) |
C7—N1—N2 | 114.4 (6) | O3—C9—C10 | 106.3 (8) |
C8—N2—N1 | 120.4 (6) | O3'—C9—C10' | 111.3 (11) |
C8—N2—H2 | 119.8 | O3'—C9—C8 | 116.8 (8) |
N1—N2—H2 | 119.8 | O3—C9—C8 | 117.1 (6) |
O1—C1—C2 | 117.6 (6) | C10—C9—C8 | 136.6 (8) |
O1—C1—C6 | 123.9 (7) | C10'—C9—C8 | 131.8 (10) |
C2—C1—C6 | 118.5 (7) | C11—C10—C9 | 109.0 (9) |
C3—C2—C1 | 120.9 (6) | C11—C10—H10 | 125.5 |
C3—C2—H2A | 119.5 | C9—C10—H10 | 125.5 |
C1—C2—H2A | 119.5 | C11'—C10'—C9 | 104.7 (14) |
C4—C3—C2 | 119.5 (7) | C11'—C10'—H10' | 127.6 |
C4—C3—H3 | 120.3 | C9—C10'—H10' | 127.6 |
C2—C3—H3 | 120.3 | C10—C11—C12 | 107.2 (10) |
C5—C4—C3 | 121.0 (6) | C10—C11—H11A | 126.4 |
C5—C4—I1 | 118.7 (5) | C12—C11—H11A | 126.4 |
C3—C4—I1 | 120.3 (5) | C10'—C11'—C12' | 109.3 (16) |
C4—C5—C6 | 120.2 (6) | C10'—C11'—H11' | 125.3 |
C4—C5—H5 | 119.9 | C12'—C11'—H11' | 125.3 |
C6—C5—H5 | 119.9 | O3—C12—C11 | 107.6 (9) |
C5—C6—C1 | 119.9 (7) | O3—C12—H12A | 126.2 |
C5—C6—C7 | 117.1 (6) | C11—C12—H12A | 126.2 |
C1—C6—C7 | 123.0 (7) | O3'—C12'—C11' | 108.3 (15) |
N1—C7—C6 | 122.7 (6) | O3'—C12'—H12' | 125.8 |
N1—C7—H7 | 118.6 | C11'—C12'—H12' | 125.8 |
C7—N1—N2—C8 | 177.9 (6) | C12—O3—C9—C10' | −21 (6) |
O1—C1—C2—C3 | −178.5 (7) | C12—O3—C9—C8 | 177.4 (9) |
C6—C1—C2—C3 | 1.0 (11) | O2—C8—C9—O3' | 170.8 (9) |
C1—C2—C3—C4 | −1.8 (12) | N2—C8—C9—O3' | −9.3 (11) |
C2—C3—C4—C5 | 0.6 (11) | O2—C8—C9—O3 | 1.1 (12) |
C2—C3—C4—I1 | −179.3 (6) | N2—C8—C9—O3 | −179.0 (8) |
C3—C4—C5—C6 | 1.3 (11) | O2—C8—C9—C10 | −178.1 (12) |
I1—C4—C5—C6 | −178.8 (5) | N2—C8—C9—C10 | 1.8 (16) |
C4—C5—C6—C1 | −2.0 (11) | O2—C8—C9—C10' | −5 (2) |
C4—C5—C6—C7 | 176.9 (7) | N2—C8—C9—C10' | 174.5 (19) |
O1—C1—C6—C5 | −179.6 (7) | O3'—C9—C10—C11 | −151 (3) |
C2—C1—C6—C5 | 0.8 (11) | O3—C9—C10—C11 | 1.9 (15) |
O1—C1—C6—C7 | 1.6 (12) | C10'—C9—C10—C11 | 6.6 (18) |
C2—C1—C6—C7 | −178.0 (7) | C8—C9—C10—C11 | −178.8 (10) |
N2—N1—C7—C6 | 176.9 (6) | O3'—C9—C10'—C11' | 3 (3) |
C5—C6—C7—N1 | 178.6 (7) | O3—C9—C10'—C11' | 157 (8) |
C1—C6—C7—N1 | −2.6 (11) | C10—C9—C10'—C11' | −6 (2) |
N1—N2—C8—O2 | −3.3 (11) | C8—C9—C10'—C11' | 179.0 (13) |
N1—N2—C8—C9 | 176.8 (6) | C9—C10—C11—C12 | 0.0 (17) |
C12'—O3'—C9—O3 | −10.9 (17) | C9—C10'—C11'—C12' | −1 (3) |
C12'—O3'—C9—C10 | 21 (2) | C9—O3—C12—C11 | 3.2 (14) |
C12'—O3'—C9—C10' | −3 (2) | C10—C11—C12—O3 | −1.9 (16) |
C12'—O3'—C9—C8 | −179.6 (11) | C9—O3'—C12'—C11' | 1.6 (19) |
C12—O3—C9—O3' | 8.7 (15) | C10'—C11'—C12'—O3' | 0 (3) |
C12—O3—C9—C10 | −3.1 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O1w | 0.88 | 1.96 | 2.813 (7) | 163 |
O1—H1···N1 | 0.84 | 2.20 | 2.744 (8) | 122 |
O1w—H11···O2i | 0.84 | 1.99 | 2.815 (8) | 167 |
O1w—H12···O2ii | 0.84 | 2.00 | 2.826 (8) | 168 |
Symmetry codes: (i) −x+1, y+1/2, −z+3/2; (ii) −x, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C12H9IN2O3·H2O |
Mr | 374.13 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 100 |
a, b, c (Å) | 4.8607 (2), 12.5873 (4), 21.1627 (9) |
V (Å3) | 1294.80 (9) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 19.57 |
Crystal size (mm) | 0.20 × 0.08 × 0.04 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.111, 0.508 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4758, 2641, 2575 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.631 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.158, 1.09 |
No. of reflections | 2641 |
No. of parameters | 186 |
No. of restraints | 34 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 3.22, −1.82 |
Absolute structure | Flack (1983), 1050 Friedel pairs |
Absolute structure parameter | −0.020 (12) |
Computer programs: CrysAlis PRO (Agilent, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O1w | 0.88 | 1.96 | 2.813 (7) | 163 |
O1—H1···N1 | 0.84 | 2.20 | 2.744 (8) | 122 |
O1w—H11···O2i | 0.84 | 1.99 | 2.815 (8) | 167 |
O1w—H12···O2ii | 0.84 | 2.00 | 2.826 (8) | 168 |
Symmetry codes: (i) −x+1, y+1/2, −z+3/2; (ii) −x, y+1/2, −z+3/2. |
Footnotes
‡Additional correspondence author, e-mail: bikas_r@yahoo.com.
Acknowledgements
The authors are grateful to the Islamic Azad University, Tabriz Branch, the University of Zanjan and the University of Malaya for support of this study.
References
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Hydrazone ligands (carbohydrazides), a class of Schiff base, derived from the condensation of acid hydrazides (R–CO–NH–NH2) with aromatic 2-hydroxy aldehydes or ketones (Craliz et al., 1955) are potentially important tridentate O,N,O-donor ligands. Previous structural studies of carbohydrazide derivatives (Abdel-Aziz et al., 2011; Bikas et al., 2012) have been extended to include the title compound, (I), which is isomorphous with bromido derivative (Tai et al., 2007).
In the molecule of (I), Fig. 1, the furyl ring was found to be disordered over two almost diagonally opposed orientations with the dihedral angle between the two components being 9.5 (10)°. In the major component (site occupancy = 0.575 (18)), the carbonyl-O and furyl-O atoms are syn. Overall, the molecule of (I) exhibits a small twist with the dihedral angle between the benzene and furyl rings being 10.3 (6)° for the major component; the comparable angle involving the minor component = 15.9 (8)°. The hydroxyl-H atom forms an intramolecular hydrogen bond to the imine-H atom, Table 1. The conformation about the C7═N1 imine bond [1.283 (10) Å] is E.
In the crystal packing, the amine-H atoms forms a hydrogen bond to the water-O, and the water-H atoms form hydrogen bonds to carbonyl-O atoms from two different molecules, Table 1. The result is a supramolecular layers parallel to (001) comprising alternating rows of carbohydrazide molecules and water molecules, Fig. 2. The layers stack along the c axis with the closest contacts between them being I···I interactions [3.6986 (6) Å for symmetry operation: -1/2 + x, 5/2 - y, 2 - z], Fig. 3.