organic compounds
Morpholin-4-ium 4-methoxybenzoate 4-methoxybenzoic acid monohydrate
aDepartment of Chemical & Environmental Engineering, Anyang Institute of Technology, Anyang 455000, People's Republic of China
*Correspondence e-mail: ayitzhao@yahoo.com.cn
In the 4H10NO+·C8H7O3−·C8H8O3·H2O, cations, anions and neutral molecules are linked by intermolecular N—H⋯O and O—H⋯O hydrogen bonds into chains running parallel to the c axis. The –CO2 groups make dihedral angles of 4.6 (3) and 5.7 (4)° with the attached ring in the 4-methoxybenzoic acid molecule and the 4-methoxybenzoate anion, respectively.
of the title compound, CRelated literature
For related studies on co-crystals of amino derivatives, see: Fu et al. (2010); Aminabhavi et al. (1986).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; 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.
Supporting information
10.1107/S1600536811023361/rz2614sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811023361/rz2614Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811023361/rz2614Isup3.cml
A mixture of morpholine (0.4 mmol) 4-methoxybenzoic acid (0.8 mmol) was dissolved in distilled water (10 ml). Colourless crystals suitable for X-ray analysis were obtained after 3 days on slow evaporation of the solvent.
All H atoms attached to C atoms were fixed geometrically and treated as riding, with C–H = 0.93-0.97 Å and with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(C) for methyl H atoms. The amine and carboxylic H atoms were located in a difference Fourier map and refined as riding, with the N–H = 0.90 (2) Å, O–H = 0.82 (2) Å, and with Uiso(H) = 1.2Ueq(N) or 1.5Ueq(O).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); 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).C4H10NO+·C8H7O3−·C8H8O3·H2O | F(000) = 872 |
Mr = 409.43 | Dx = 1.287 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4842 reflections |
a = 21.874 (4) Å | θ = 3.0–27.5° |
b = 11.753 (2) Å | µ = 0.10 mm−1 |
c = 8.3618 (17) Å | T = 298 K |
β = 100.63 (3)° | Needle, colourless |
V = 2112.9 (7) Å3 | 0.30 × 0.05 × 0.05 mm |
Z = 4 |
Rigaku Mercury2 diffractometer | 4842 independent reflections |
Radiation source: fine-focus sealed tube | 2453 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.077 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 3.0° |
CCD profile fitting scans | h = −28→27 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −15→15 |
Tmin = 0.910, Tmax = 1.000 | l = −10→10 |
21489 measured reflections |
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)] = 0.063 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.162 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.058P)2 + 0.3115P] where P = (Fo2 + 2Fc2)/3 |
4842 reflections | (Δ/σ)max < 0.001 |
264 parameters | Δρmax = 0.16 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C4H10NO+·C8H7O3−·C8H8O3·H2O | V = 2112.9 (7) Å3 |
Mr = 409.43 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 21.874 (4) Å | µ = 0.10 mm−1 |
b = 11.753 (2) Å | T = 298 K |
c = 8.3618 (17) Å | 0.30 × 0.05 × 0.05 mm |
β = 100.63 (3)° |
Rigaku Mercury2 diffractometer | 4842 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 2453 reflections with I > 2σ(I) |
Tmin = 0.910, Tmax = 1.000 | Rint = 0.077 |
21489 measured reflections |
R[F2 > 2σ(F2)] = 0.063 | 0 restraints |
wR(F2) = 0.162 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.16 e Å−3 |
4842 reflections | Δρmin = −0.23 e Å−3 |
264 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 > 2sigma(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 | ||
O4 | 0.30003 (8) | 0.67567 (15) | 0.28036 (19) | 0.0575 (5) | |
C10 | 0.40047 (10) | 0.61009 (19) | 0.2544 (3) | 0.0400 (5) | |
O6 | 0.56764 (7) | 0.62620 (15) | 0.0900 (2) | 0.0653 (5) | |
C12 | 0.46359 (11) | 0.6996 (2) | 0.0826 (3) | 0.0517 (6) | |
H12A | 0.4682 | 0.7552 | 0.0067 | 0.062* | |
C14 | 0.50318 (12) | 0.5405 (2) | 0.2459 (3) | 0.0556 (7) | |
H14A | 0.5350 | 0.4887 | 0.2807 | 0.067* | |
C13 | 0.51084 (11) | 0.6245 (2) | 0.1353 (3) | 0.0452 (6) | |
O5 | 0.34193 (10) | 0.53418 (18) | 0.4368 (3) | 0.0845 (7) | |
C15 | 0.44880 (12) | 0.5339 (2) | 0.3038 (3) | 0.0497 (6) | |
H15A | 0.4441 | 0.4771 | 0.3780 | 0.060* | |
C11 | 0.40899 (11) | 0.6921 (2) | 0.1430 (3) | 0.0486 (6) | |
H11A | 0.3772 | 0.7438 | 0.1075 | 0.058* | |
C9 | 0.34312 (12) | 0.6061 (2) | 0.3279 (3) | 0.0493 (6) | |
C16 | 0.57873 (13) | 0.7102 (3) | −0.0241 (4) | 0.0756 (9) | |
H16A | 0.6193 | 0.6990 | −0.0499 | 0.113* | |
H16B | 0.5765 | 0.7846 | 0.0221 | 0.113* | |
H16C | 0.5479 | 0.7038 | −0.1215 | 0.113* | |
O1W | 0.23075 (8) | 0.74295 (15) | 0.5012 (2) | 0.0634 (5) | |
H1WA | 0.2490 | 0.7132 | 0.4346 | 0.095* | |
H1WB | 0.2567 | 0.7703 | 0.5746 | 0.095* | |
N1 | 0.26721 (9) | 0.00361 (15) | 0.1437 (2) | 0.0462 (5) | |
H1A | 0.2883 | −0.0209 | 0.0674 | 0.055* | |
H1B | 0.2299 | −0.0308 | 0.1336 | 0.055* | |
O1 | 0.11518 (8) | −0.23024 (16) | 0.0259 (2) | 0.0703 (6) | |
H1 | 0.1514 | −0.2296 | 0.0125 | 0.105* | |
O7 | 0.26402 (9) | 0.14332 (16) | 0.4181 (2) | 0.0696 (6) | |
C1 | 0.10461 (12) | −0.1389 (2) | 0.1073 (3) | 0.0526 (6) | |
C2 | 0.04022 (11) | −0.1286 (2) | 0.1359 (3) | 0.0469 (6) | |
O2 | 0.14422 (8) | −0.06853 (17) | 0.1541 (3) | 0.0785 (6) | |
C5 | −0.08025 (12) | −0.0989 (2) | 0.1886 (3) | 0.0550 (7) | |
O3 | −0.14078 (8) | −0.09074 (17) | 0.2062 (3) | 0.0777 (6) | |
C7 | 0.02520 (12) | −0.0385 (2) | 0.2269 (3) | 0.0587 (7) | |
H7A | 0.0560 | 0.0130 | 0.2708 | 0.070* | |
C4 | −0.06580 (12) | −0.1890 (2) | 0.0972 (4) | 0.0661 (8) | |
H4A | −0.0968 | −0.2402 | 0.0528 | 0.079* | |
C6 | −0.03452 (12) | −0.0231 (2) | 0.2543 (3) | 0.0594 (7) | |
H6A | −0.0438 | 0.0378 | 0.3167 | 0.071* | |
C3 | −0.00622 (11) | −0.2043 (2) | 0.0707 (3) | 0.0571 (7) | |
H3A | 0.0029 | −0.2657 | 0.0089 | 0.069* | |
C19 | 0.30232 (12) | −0.0252 (2) | 0.3071 (3) | 0.0533 (7) | |
H19A | 0.3443 | 0.0047 | 0.3197 | 0.064* | |
H19B | 0.3050 | −0.1072 | 0.3196 | 0.064* | |
C18 | 0.25775 (15) | 0.1276 (2) | 0.1291 (3) | 0.0706 (8) | |
H18A | 0.2314 | 0.1452 | 0.0255 | 0.085* | |
H18B | 0.2975 | 0.1652 | 0.1328 | 0.085* | |
C20 | 0.27063 (14) | 0.0242 (2) | 0.4338 (3) | 0.0671 (8) | |
H20A | 0.2298 | −0.0101 | 0.4253 | 0.081* | |
H20B | 0.2944 | 0.0063 | 0.5405 | 0.081* | |
C8 | −0.15903 (14) | 0.0060 (3) | 0.2886 (4) | 0.0879 (10) | |
H8A | −0.2034 | 0.0060 | 0.2798 | 0.132* | |
H8B | −0.1463 | 0.0740 | 0.2404 | 0.132* | |
H8C | −0.1396 | 0.0030 | 0.4013 | 0.132* | |
C17 | 0.22811 (15) | 0.1700 (2) | 0.2644 (4) | 0.0769 (9) | |
H17A | 0.2230 | 0.2518 | 0.2550 | 0.092* | |
H17B | 0.1872 | 0.1362 | 0.2555 | 0.092* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O4 | 0.0538 (11) | 0.0730 (12) | 0.0469 (10) | 0.0087 (10) | 0.0126 (8) | 0.0003 (9) |
C10 | 0.0456 (14) | 0.0418 (13) | 0.0326 (12) | −0.0019 (11) | 0.0079 (11) | −0.0025 (10) |
O6 | 0.0477 (11) | 0.0712 (13) | 0.0804 (13) | 0.0108 (9) | 0.0210 (10) | 0.0273 (10) |
C12 | 0.0467 (15) | 0.0578 (16) | 0.0495 (14) | 0.0032 (12) | 0.0063 (12) | 0.0211 (12) |
C14 | 0.0563 (16) | 0.0518 (16) | 0.0604 (16) | 0.0163 (13) | 0.0155 (14) | 0.0141 (13) |
C13 | 0.0406 (14) | 0.0485 (15) | 0.0465 (14) | 0.0004 (11) | 0.0082 (11) | 0.0052 (12) |
O5 | 0.0960 (16) | 0.0856 (15) | 0.0870 (15) | 0.0203 (12) | 0.0561 (13) | 0.0340 (12) |
C15 | 0.0636 (17) | 0.0413 (14) | 0.0459 (14) | 0.0051 (12) | 0.0146 (13) | 0.0096 (11) |
C11 | 0.0451 (15) | 0.0513 (15) | 0.0478 (14) | 0.0083 (11) | 0.0042 (12) | 0.0115 (12) |
C9 | 0.0592 (17) | 0.0516 (16) | 0.0387 (14) | −0.0028 (13) | 0.0132 (13) | −0.0047 (12) |
C16 | 0.0621 (19) | 0.076 (2) | 0.095 (2) | 0.0011 (15) | 0.0328 (17) | 0.0317 (18) |
O1W | 0.0488 (10) | 0.0806 (14) | 0.0636 (12) | −0.0085 (9) | 0.0179 (9) | −0.0138 (10) |
N1 | 0.0494 (12) | 0.0429 (11) | 0.0500 (12) | −0.0063 (9) | 0.0189 (10) | −0.0085 (9) |
O1 | 0.0494 (11) | 0.0678 (13) | 0.0960 (15) | −0.0007 (9) | 0.0197 (10) | −0.0159 (11) |
O7 | 0.0921 (15) | 0.0609 (13) | 0.0555 (12) | 0.0106 (10) | 0.0132 (10) | −0.0171 (10) |
C1 | 0.0443 (15) | 0.0538 (17) | 0.0588 (16) | 0.0016 (13) | 0.0075 (13) | 0.0077 (13) |
C2 | 0.0421 (14) | 0.0471 (15) | 0.0507 (14) | −0.0015 (11) | 0.0061 (12) | 0.0062 (12) |
O2 | 0.0450 (11) | 0.0735 (14) | 0.1168 (17) | −0.0146 (10) | 0.0145 (11) | −0.0202 (12) |
C5 | 0.0444 (15) | 0.0568 (17) | 0.0662 (17) | −0.0019 (13) | 0.0165 (13) | 0.0060 (14) |
O3 | 0.0516 (12) | 0.0812 (14) | 0.1071 (16) | −0.0047 (10) | 0.0327 (11) | −0.0130 (12) |
C7 | 0.0471 (16) | 0.0622 (17) | 0.0655 (17) | −0.0077 (13) | 0.0070 (14) | −0.0077 (14) |
C4 | 0.0475 (16) | 0.0589 (18) | 0.092 (2) | −0.0117 (13) | 0.0143 (15) | −0.0122 (16) |
C6 | 0.0594 (18) | 0.0560 (17) | 0.0636 (17) | −0.0009 (13) | 0.0137 (14) | −0.0081 (13) |
C3 | 0.0474 (16) | 0.0486 (15) | 0.0761 (19) | −0.0017 (12) | 0.0137 (14) | −0.0067 (13) |
C19 | 0.0523 (15) | 0.0430 (14) | 0.0625 (17) | 0.0021 (12) | 0.0051 (13) | −0.0009 (12) |
C18 | 0.110 (2) | 0.0468 (17) | 0.0551 (17) | 0.0088 (16) | 0.0145 (17) | 0.0071 (13) |
C20 | 0.091 (2) | 0.065 (2) | 0.0461 (15) | 0.0022 (16) | 0.0145 (15) | 0.0004 (14) |
C8 | 0.069 (2) | 0.108 (3) | 0.095 (2) | 0.0141 (19) | 0.0372 (19) | −0.009 (2) |
C17 | 0.097 (2) | 0.0520 (17) | 0.079 (2) | 0.0267 (16) | 0.0081 (18) | −0.0102 (15) |
O4—C9 | 1.256 (3) | C1—O2 | 1.209 (3) |
C10—C11 | 1.377 (3) | C1—C2 | 1.476 (3) |
C10—C15 | 1.389 (3) | C2—C7 | 1.379 (3) |
C10—C9 | 1.496 (3) | C2—C3 | 1.384 (3) |
O6—C13 | 1.364 (3) | C5—O3 | 1.362 (3) |
O6—C16 | 1.425 (3) | C5—C6 | 1.376 (3) |
C12—C13 | 1.369 (3) | C5—C4 | 1.377 (4) |
C12—C11 | 1.383 (3) | O3—C8 | 1.424 (3) |
C12—H12A | 0.9300 | C7—C6 | 1.379 (3) |
C14—C15 | 1.367 (3) | C7—H7A | 0.9300 |
C14—C13 | 1.384 (3) | C4—C3 | 1.374 (3) |
C14—H14A | 0.9300 | C4—H4A | 0.9300 |
O5—C9 | 1.246 (3) | C6—H6A | 0.9300 |
C15—H15A | 0.9300 | C3—H3A | 0.9300 |
C11—H11A | 0.9300 | C19—C20 | 1.487 (3) |
C16—H16A | 0.9600 | C19—H19A | 0.9700 |
C16—H16B | 0.9600 | C19—H19B | 0.9700 |
C16—H16C | 0.9600 | C18—C17 | 1.490 (4) |
O1W—H1WA | 0.8204 | C18—H18A | 0.9700 |
O1W—H1WB | 0.8203 | C18—H18B | 0.9700 |
N1—C18 | 1.474 (3) | C20—H20A | 0.9700 |
N1—C19 | 1.478 (3) | C20—H20B | 0.9700 |
N1—H1A | 0.9004 | C8—H8A | 0.9600 |
N1—H1B | 0.9004 | C8—H8B | 0.9600 |
O1—C1 | 1.315 (3) | C8—H8C | 0.9600 |
O1—H1 | 0.8206 | C17—H17A | 0.9700 |
O7—C20 | 1.411 (3) | C17—H17B | 0.9700 |
O7—C17 | 1.412 (3) | ||
C11—C10—C15 | 117.5 (2) | C6—C5—C4 | 119.7 (2) |
C11—C10—C9 | 121.9 (2) | C5—O3—C8 | 118.2 (2) |
C15—C10—C9 | 120.5 (2) | C2—C7—C6 | 121.5 (2) |
C13—O6—C16 | 118.19 (19) | C2—C7—H7A | 119.3 |
C13—C12—C11 | 119.6 (2) | C6—C7—H7A | 119.3 |
C13—C12—H12A | 120.2 | C3—C4—C5 | 120.8 (2) |
C11—C12—H12A | 120.2 | C3—C4—H4A | 119.6 |
C15—C14—C13 | 119.9 (2) | C5—C4—H4A | 119.6 |
C15—C14—H14A | 120.1 | C5—C6—C7 | 119.3 (2) |
C13—C14—H14A | 120.1 | C5—C6—H6A | 120.3 |
O6—C13—C12 | 125.0 (2) | C7—C6—H6A | 120.3 |
O6—C13—C14 | 115.1 (2) | C4—C3—C2 | 120.1 (2) |
C12—C13—C14 | 119.8 (2) | C4—C3—H3A | 120.0 |
C14—C15—C10 | 121.5 (2) | C2—C3—H3A | 120.0 |
C14—C15—H15A | 119.2 | N1—C19—C20 | 109.8 (2) |
C10—C15—H15A | 119.2 | N1—C19—H19A | 109.7 |
C10—C11—C12 | 121.7 (2) | C20—C19—H19A | 109.7 |
C10—C11—H11A | 119.1 | N1—C19—H19B | 109.7 |
C12—C11—H11A | 119.1 | C20—C19—H19B | 109.7 |
O5—C9—O4 | 123.9 (2) | H19A—C19—H19B | 108.2 |
O5—C9—C10 | 117.0 (2) | N1—C18—C17 | 110.0 (2) |
O4—C9—C10 | 119.1 (2) | N1—C18—H18A | 109.7 |
O6—C16—H16A | 109.5 | C17—C18—H18A | 109.7 |
O6—C16—H16B | 109.5 | N1—C18—H18B | 109.7 |
H16A—C16—H16B | 109.5 | C17—C18—H18B | 109.7 |
O6—C16—H16C | 109.5 | H18A—C18—H18B | 108.2 |
H16A—C16—H16C | 109.5 | O7—C20—C19 | 112.0 (2) |
H16B—C16—H16C | 109.5 | O7—C20—H20A | 109.2 |
H1WA—O1W—H1WB | 108.6 | C19—C20—H20A | 109.2 |
C18—N1—C19 | 110.12 (19) | O7—C20—H20B | 109.2 |
C18—N1—H1A | 109.9 | C19—C20—H20B | 109.2 |
C19—N1—H1A | 109.6 | H20A—C20—H20B | 107.9 |
C18—N1—H1B | 109.0 | O3—C8—H8A | 109.5 |
C19—N1—H1B | 106.9 | O3—C8—H8B | 109.5 |
H1A—N1—H1B | 111.3 | H8A—C8—H8B | 109.5 |
C1—O1—H1 | 109.2 | O3—C8—H8C | 109.5 |
C20—O7—C17 | 109.6 (2) | H8A—C8—H8C | 109.5 |
O2—C1—O1 | 122.8 (2) | H8B—C8—H8C | 109.5 |
O2—C1—C2 | 122.7 (3) | O7—C17—C18 | 111.7 (2) |
O1—C1—C2 | 114.5 (2) | O7—C17—H17A | 109.3 |
C7—C2—C3 | 118.6 (2) | C18—C17—H17A | 109.3 |
C7—C2—C1 | 118.9 (2) | O7—C17—H17B | 109.3 |
C3—C2—C1 | 122.4 (2) | C18—C17—H17B | 109.3 |
O3—C5—C6 | 124.1 (2) | H17A—C17—H17B | 107.9 |
O3—C5—C4 | 116.2 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O5i | 0.90 | 1.75 | 2.628 (3) | 164 |
N1—H1B···O2 | 0.90 | 1.96 | 2.837 (3) | 163 |
O1—H1···O1Wi | 0.82 | 1.76 | 2.579 (2) | 173 |
O1W—H1WA···O4 | 0.82 | 1.91 | 2.714 (2) | 167 |
O1W—H1WB···O4ii | 0.82 | 1.91 | 2.712 (3) | 164 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x, −y+3/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C4H10NO+·C8H7O3−·C8H8O3·H2O |
Mr | 409.43 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 21.874 (4), 11.753 (2), 8.3618 (17) |
β (°) | 100.63 (3) |
V (Å3) | 2112.9 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.30 × 0.05 × 0.05 |
Data collection | |
Diffractometer | Rigaku Mercury2 diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.910, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 21489, 4842, 2453 |
Rint | 0.077 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.063, 0.162, 1.03 |
No. of reflections | 4842 |
No. of parameters | 264 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.16, −0.23 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O5i | 0.90 | 1.75 | 2.628 (3) | 164 |
N1—H1B···O2 | 0.90 | 1.96 | 2.837 (3) | 163 |
O1—H1···O1Wi | 0.82 | 1.76 | 2.579 (2) | 173 |
O1W—H1WA···O4 | 0.82 | 1.91 | 2.714 (2) | 167 |
O1W—H1WB···O4ii | 0.82 | 1.91 | 2.712 (3) | 164 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x, −y+3/2, z+1/2. |
Acknowledgements
This work was supported by the start-up fund of Anyang Institute of Technology.
References
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The amino derivatives have found wide range of applications in material science, such as magnetic, fluorescent and dielectric behaviors, and there has been an increasing interest in the preparation of amino co-crystal compounds (Aminabhavi et al., 1986; Fu, et al. 2010). We report here the crystal structure of the title compound, morpholin-4-ium 4-methoxybenzoate 4-methoxybenzoic acid monohydrate.
The asymmetric unit of the title commpound is composed of one 4-methoxybenzoate anion, one morpholin-4-ium cation, one 4-methoxybenzoic acid molecule and one water molecule (Fig. 1). The morpholine ring is in a chair conformation. All geometric parameters are in the normal ranges. In the crystal structure, the H atoms bound to N and O atoms are involved in intermolecular N—H···O and O—H···O hydrogen bonds (Table 1) linking ions and neutral molecules into one-dimensional chains parallel to the c-axis (Fig. 2).