organic compounds
Dihydrocyclam dimaleate [H2(cyclam)(maleate)2]
aLCMSN, Département de Chimie, Faculté des Sciences, Université Moulay Ismail, BP 11201, 50000 Meknès, Morocco, bLIMOM (CNRST, URAC 19), Department of Chemistry, Faculty of Sciences, University Sidi Mohamed Ben Abdellah, BP 1796, 30000 Fès, Morocco, cLaboratorio de Radicales Libres y Quimica Computacional, Instituto de Quimica Organica General, Consejo Superior de Investigaciones Cientificas, C/ Juan de la Cierva, 3, 28006-Madrid, Spain, dLaboratorio de Difracción de Rayos X de Monocristal, Servicio Interdepartamental de Investigación, Universidad Autónoma de Madrid, and eLCSMA, Department of Chemistry, Faculty of Sciences, University Mohamed I, Po. Box 717, 60000 Oujda, Morocco
*Correspondence e-mail: limomusmba@gmail.com
The 10H26N42+·2C4H3O4−, contains two half-cations (both completed by crystallographic inversion symmetry) and two maleate anions. The cyclam macrocycles adopt trans-III conformations, supported by two intramolecular N—H⋯O hydrogen bonds. The O-bonded H atom of each maleate ion is disordered over two positions with an occupancy ratio of 0.61 (5):0.39 (5): each one generates an intramolecular O—H⋯O hydrogen bond. In the crystal, the cations are linked to the anions by N—H⋯O hydrogen bonds, generating [001] chains.
of the title molecular salt [systematic name: 1,4,8,11-tetraazacyclotetradecane-1,8-diium bis(3-carboxyprop-2-enoate)], CCCDC reference: 961015
Related literature
For related cyclam crystal structures, see: Robinson et al. (1989); Frémond et al. (2000); Meyer et al. (1998). For macrocycle conformations, see: Bosnich et al. (1965); Dale (1973, 1976); Melson (1979); Bandoli et al. (1993); Hancock et al. (1996).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; 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: SHELXL97.
Supporting information
CCDC reference: 961015
10.1107/S1600536813025580/hb7135sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813025580/hb7135Isup2.hkl
0.2 g (1 mmol) of cyclam C10H24N4 was dissolved 25 ml of water-ethanol mixture 1:1 (v/v) and 0.233 g (2 mmol) of maleic acid C4H4O4, in 25 ml of the same solvent. The solutions were combined, and the mixture was refluxed for 3 h, before to be deposited to set at room conditions. Prismatic coloreless crystals were obtained which were washed with a water (80%) /ethanol (20%) (v:v) solution.
Data collection: SMART (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 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: SHELXL97 (Sheldrick, 2008).Fig. 1. : The molecular structure of the title compound, with hydrogen bonds shown as dashed lines. Anisotropic displacement parameters drawn at the 50% probability level. | |
Fig. 2. : Inter-molecular H-bonds between cyclam and maleate ion. | |
Fig. 3. : Projection of the structure in bc-plane, hydrogen bonds as dashed lines. |
C10H26N42+·2C4H3O4− | Z = 4 |
Mr = 432.48 | F(000) = 928 |
Monoclinic, P21/n | Dx = 1.337 Mg m−3 |
a = 8.2925 (1) Å | Cu Kα radiation, λ = 1.54178 Å |
b = 13.5841 (2) Å | µ = 0.89 mm−1 |
c = 19.2995 (3) Å | T = 100 K |
β = 98.797 (1)° | Prism, colourless |
V = 2148.44 (5) Å3 | 0.25 × 0.20 × 0.20 mm |
Bruker SMART CCD diffractometer | 3821 reflections with I > 2σ(I) |
ω scans | Rint = 0.024 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | θmax = 70.1°, θmin = 4.6° |
Tmin = 0.81, Tmax = 0.84 | h = −10→9 |
18854 measured reflections | k = −16→16 |
4018 independent reflections | l = −23→23 |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.083 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0406P)2 + 0.6721P] where P = (Fo2 + 2Fc2)/3 |
4018 reflections | (Δ/σ)max < 0.001 |
403 parameters | Δρmax = 0.36 e Å−3 |
0 restraints | Δρmin = −0.18 e Å−3 |
C10H26N42+·2C4H3O4− | V = 2148.44 (5) Å3 |
Mr = 432.48 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 8.2925 (1) Å | µ = 0.89 mm−1 |
b = 13.5841 (2) Å | T = 100 K |
c = 19.2995 (3) Å | 0.25 × 0.20 × 0.20 mm |
β = 98.797 (1)° |
Bruker SMART CCD diffractometer | 4018 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 3821 reflections with I > 2σ(I) |
Tmin = 0.81, Tmax = 0.84 | Rint = 0.024 |
18854 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.083 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.36 e Å−3 |
4018 reflections | Δρmin = −0.18 e Å−3 |
403 parameters |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
C1 | 0.29130 (13) | 0.94686 (8) | 0.28537 (6) | 0.0241 (2) | |
C2 | 0.42219 (13) | 0.89074 (8) | 0.25661 (6) | 0.0240 (2) | |
C3 | 0.44193 (13) | 0.87391 (8) | 0.19031 (6) | 0.0229 (2) | |
C4 | 0.34069 (12) | 0.90322 (8) | 0.12233 (6) | 0.0227 (2) | |
C5 | 0.98341 (14) | 0.76765 (8) | 0.18188 (6) | 0.0260 (2) | |
C6 | 1.05748 (14) | 0.70568 (9) | 0.24264 (6) | 0.0259 (2) | |
C7 | 1.02908 (14) | 0.70577 (9) | 0.30874 (6) | 0.0274 (2) | |
C8 | 0.92026 (14) | 0.76946 (9) | 0.34489 (6) | 0.0284 (2) | |
C9 | 0.25226 (15) | 0.61005 (9) | 0.03030 (6) | 0.0301 (3) | |
C10 | 0.47726 (15) | 0.63339 (9) | 0.13169 (7) | 0.0303 (3) | |
C11 | 0.62753 (15) | 0.58461 (10) | 0.17098 (6) | 0.0319 (3) | |
C12 | 0.75542 (14) | 0.55991 (10) | 0.12458 (7) | 0.0309 (3) | |
C13 | 0.81528 (14) | 0.46284 (9) | 0.02577 (6) | 0.0289 (3) | |
C14 | 0.75571 (15) | −0.17204 (9) | −0.00831 (7) | 0.0313 (3) | |
C15 | 0.74127 (14) | −0.02422 (9) | 0.06666 (6) | 0.0283 (2) | |
C16 | 0.84068 (14) | 0.05815 (9) | 0.10416 (6) | 0.0281 (2) | |
C17 | 1.02932 (15) | 0.19107 (9) | 0.08931 (6) | 0.0306 (3) | |
C18 | 1.12976 (16) | 0.24033 (9) | 0.03941 (7) | 0.0335 (3) | |
N1 | 0.38474 (12) | 0.56356 (7) | 0.08060 (5) | 0.0245 (2) | |
N2 | 0.69367 (11) | 0.48659 (7) | 0.07078 (5) | 0.0258 (2) | |
N3 | 0.84805 (11) | −0.09675 (7) | 0.03828 (5) | 0.0243 (2) | |
N4 | 0.92438 (12) | 0.11249 (7) | 0.05474 (5) | 0.0248 (2) | |
O1 | 0.18816 (10) | 0.99727 (6) | 0.24442 (4) | 0.03003 (19) | |
H1O | 0.2061 | 0.9906 | 0.203 | 0.045* | 0.39 (5) |
O2 | 0.29456 (10) | 0.94215 (6) | 0.35007 (4) | 0.0326 (2) | |
O3 | 0.22552 (10) | 0.96878 (6) | 0.12282 (4) | 0.02853 (19) | |
O4 | 0.37276 (9) | 0.86677 (6) | 0.06808 (4) | 0.02820 (19) | |
O5 | 0.85713 (11) | 0.82014 (7) | 0.18682 (5) | 0.0352 (2) | |
H5O | 0.8402 | 0.8206 | 0.2286 | 0.053* | 0.41 (5) |
O6 | 1.04578 (11) | 0.76384 (7) | 0.12791 (4) | 0.0332 (2) | |
O7 | 0.81387 (10) | 0.82564 (7) | 0.30773 (5) | 0.0340 (2) | |
O8 | 0.93463 (12) | 0.76651 (8) | 0.40874 (5) | 0.0430 (2) | |
H1A | 0.3368 (19) | 0.5175 (12) | 0.1059 (8) | 0.036 (4)* | |
H1B | 0.4603 (19) | 0.5331 (11) | 0.0571 (8) | 0.034 (4)* | |
H2 | 0.4994 (17) | 0.8649 (10) | 0.2919 (7) | 0.026 (3)* | |
H2A | 0.6715 (18) | 0.4294 (12) | 0.0937 (8) | 0.035 (4)* | |
H3 | 0.5346 (17) | 0.8353 (10) | 0.1825 (7) | 0.026 (3)* | |
H3A | 0.9173 (18) | −0.0670 (11) | 0.0134 (8) | 0.032 (4)* | |
H3B | 0.9109 (19) | −0.1278 (11) | 0.0739 (8) | 0.034 (4)* | |
H3O | 0.211 (3) | 0.9802 (17) | 0.1673 (15) | 0.023 (8)* | 0.61 (5) |
H4 | 0.8494 (19) | 0.1373 (11) | 0.0233 (8) | 0.033 (4)* | |
H6 | 1.1379 (17) | 0.6605 (11) | 0.2304 (8) | 0.031 (3)* | |
H7 | 1.0899 (18) | 0.6622 (12) | 0.3405 (8) | 0.035 (4)* | |
H7O | 0.829 (3) | 0.826 (2) | 0.2615 (19) | 0.033 (10)* | 0.59 (5) |
H9A | 0.3008 (18) | 0.6660 (12) | 0.0107 (8) | 0.036 (4)* | |
H9B | 0.1683 (17) | 0.6323 (11) | 0.0580 (8) | 0.031 (3)* | |
H10A | 0.5089 (18) | 0.6906 (11) | 0.1055 (8) | 0.033 (4)* | |
H10B | 0.4040 (17) | 0.6548 (11) | 0.1624 (8) | 0.031 (3)* | |
H11A | 0.6791 (19) | 0.6312 (12) | 0.2085 (8) | 0.039 (4)* | |
H11B | 0.5941 (17) | 0.5260 (11) | 0.1945 (8) | 0.031 (3)* | |
H12A | 0.7842 (17) | 0.6192 (11) | 0.0991 (7) | 0.030 (3)* | |
H12B | 0.855 (2) | 0.5371 (11) | 0.1536 (8) | 0.038 (4)* | |
H13A | 0.8453 (17) | 0.5260 (11) | 0.0028 (7) | 0.028 (3)* | |
H13B | 0.9123 (19) | 0.4366 (11) | 0.0525 (8) | 0.033 (4)* | |
H14A | 0.6835 (18) | −0.1343 (11) | −0.0437 (8) | 0.034 (4)* | |
H14B | 0.6853 (19) | −0.2065 (12) | 0.0195 (8) | 0.039 (4)* | |
H15A | 0.6656 (17) | 0.0007 (10) | 0.0272 (7) | 0.025 (3)* | |
H15B | 0.6817 (18) | −0.0594 (11) | 0.0973 (8) | 0.034 (4)* | |
H16A | 0.9219 (17) | 0.0315 (10) | 0.1411 (7) | 0.028 (3)* | |
H16B | 0.7675 (18) | 0.1014 (11) | 0.1274 (8) | 0.033 (4)* | |
H17A | 1.1036 (17) | 0.1611 (10) | 0.1290 (7) | 0.028 (3)* | |
H17B | 0.9618 (18) | 0.2419 (12) | 0.1109 (8) | 0.036 (4)* | |
H18A | 1.0582 (19) | 0.2722 (11) | 0.0018 (8) | 0.036 (4)* | |
H18B | 1.1958 (19) | 0.2909 (12) | 0.0640 (8) | 0.039 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0230 (5) | 0.0242 (5) | 0.0252 (5) | −0.0015 (4) | 0.0038 (4) | −0.0028 (4) |
C2 | 0.0228 (5) | 0.0247 (5) | 0.0235 (5) | 0.0025 (4) | 0.0007 (4) | 0.0005 (4) |
C3 | 0.0196 (5) | 0.0231 (5) | 0.0261 (5) | 0.0023 (4) | 0.0034 (4) | 0.0001 (4) |
C4 | 0.0201 (5) | 0.0239 (5) | 0.0243 (5) | −0.0021 (4) | 0.0040 (4) | 0.0022 (4) |
C5 | 0.0261 (5) | 0.0270 (5) | 0.0238 (5) | −0.0043 (4) | 0.0005 (4) | 0.0003 (4) |
C6 | 0.0235 (5) | 0.0275 (6) | 0.0261 (6) | 0.0040 (4) | 0.0025 (4) | −0.0013 (4) |
C7 | 0.0267 (6) | 0.0300 (6) | 0.0245 (5) | 0.0073 (5) | 0.0006 (4) | 0.0031 (5) |
C8 | 0.0265 (6) | 0.0319 (6) | 0.0270 (6) | 0.0035 (5) | 0.0046 (4) | −0.0003 (5) |
C9 | 0.0322 (6) | 0.0314 (6) | 0.0286 (6) | 0.0088 (5) | 0.0108 (5) | 0.0045 (5) |
C10 | 0.0332 (6) | 0.0265 (6) | 0.0337 (6) | −0.0034 (5) | 0.0133 (5) | −0.0063 (5) |
C11 | 0.0350 (6) | 0.0339 (6) | 0.0273 (6) | −0.0077 (5) | 0.0066 (5) | −0.0046 (5) |
C12 | 0.0243 (6) | 0.0366 (6) | 0.0312 (6) | −0.0054 (5) | 0.0029 (5) | −0.0024 (5) |
C13 | 0.0234 (5) | 0.0362 (6) | 0.0283 (6) | 0.0052 (5) | 0.0072 (5) | 0.0056 (5) |
C14 | 0.0302 (6) | 0.0323 (6) | 0.0291 (6) | −0.0103 (5) | −0.0024 (5) | 0.0020 (5) |
C15 | 0.0209 (5) | 0.0360 (6) | 0.0283 (6) | 0.0020 (5) | 0.0051 (4) | 0.0075 (5) |
C16 | 0.0259 (6) | 0.0359 (6) | 0.0230 (5) | 0.0077 (5) | 0.0056 (4) | −0.0002 (5) |
C17 | 0.0331 (6) | 0.0273 (6) | 0.0290 (6) | 0.0034 (5) | −0.0030 (5) | −0.0068 (5) |
C18 | 0.0398 (7) | 0.0236 (6) | 0.0328 (6) | −0.0046 (5) | −0.0083 (5) | −0.0007 (5) |
N1 | 0.0243 (5) | 0.0245 (5) | 0.0265 (5) | 0.0006 (4) | 0.0098 (4) | −0.0007 (4) |
N2 | 0.0234 (5) | 0.0284 (5) | 0.0268 (5) | −0.0021 (4) | 0.0082 (4) | 0.0003 (4) |
N3 | 0.0224 (5) | 0.0269 (5) | 0.0229 (5) | −0.0033 (4) | 0.0007 (4) | 0.0039 (4) |
N4 | 0.0246 (5) | 0.0258 (5) | 0.0227 (5) | 0.0031 (4) | −0.0009 (4) | −0.0007 (4) |
O1 | 0.0262 (4) | 0.0355 (4) | 0.0282 (4) | 0.0088 (3) | 0.0038 (3) | −0.0013 (4) |
O2 | 0.0365 (5) | 0.0374 (5) | 0.0247 (4) | 0.0074 (4) | 0.0076 (3) | −0.0025 (3) |
O3 | 0.0278 (4) | 0.0313 (4) | 0.0257 (4) | 0.0082 (3) | 0.0017 (3) | 0.0031 (3) |
O4 | 0.0275 (4) | 0.0357 (4) | 0.0216 (4) | 0.0025 (3) | 0.0045 (3) | 0.0008 (3) |
O5 | 0.0337 (5) | 0.0425 (5) | 0.0286 (5) | 0.0118 (4) | 0.0026 (3) | 0.0092 (4) |
O6 | 0.0375 (5) | 0.0395 (5) | 0.0232 (4) | −0.0024 (4) | 0.0064 (3) | 0.0016 (3) |
O7 | 0.0311 (4) | 0.0404 (5) | 0.0306 (5) | 0.0142 (4) | 0.0053 (3) | 0.0018 (4) |
O8 | 0.0473 (5) | 0.0572 (6) | 0.0254 (4) | 0.0175 (5) | 0.0083 (4) | −0.0004 (4) |
C1—O2 | 1.2463 (14) | C13—N2 | 1.4641 (14) |
C1—O1 | 1.2722 (14) | C13—C9i | 1.5099 (18) |
C1—C2 | 1.5007 (15) | C13—H13A | 1.014 (15) |
C2—C3 | 1.3343 (16) | C13—H13B | 0.956 (16) |
C2—H2 | 0.930 (14) | C14—N3 | 1.4933 (15) |
C3—C4 | 1.4991 (15) | C14—C18ii | 1.5156 (19) |
C3—H3 | 0.961 (14) | C14—H14A | 0.981 (16) |
C4—O4 | 1.2236 (14) | C14—H14B | 0.972 (16) |
C4—O3 | 1.3070 (14) | C15—N3 | 1.4843 (15) |
C5—O6 | 1.2328 (14) | C15—C16 | 1.5076 (17) |
C5—O5 | 1.2824 (15) | C15—H15A | 0.971 (14) |
C5—C6 | 1.4969 (16) | C15—H15B | 0.954 (16) |
C6—C7 | 1.3321 (17) | C16—N4 | 1.4625 (15) |
C6—H6 | 0.962 (15) | C16—H16A | 0.973 (14) |
C7—C8 | 1.4975 (16) | C16—H16B | 0.998 (15) |
C7—H7 | 0.941 (16) | C17—N4 | 1.4712 (15) |
C8—O8 | 1.2204 (15) | C17—C18 | 1.5213 (19) |
C8—O7 | 1.2967 (15) | C17—H17A | 0.994 (14) |
C9—N1 | 1.4906 (15) | C17—H17B | 1.017 (16) |
C9—C13i | 1.5099 (18) | C18—C14ii | 1.5155 (19) |
C9—H9A | 0.963 (16) | C18—H18A | 0.967 (16) |
C9—H9B | 0.988 (15) | C18—H18B | 0.958 (17) |
C10—N1 | 1.4929 (15) | N1—H1A | 0.920 (17) |
C10—C11 | 1.5093 (18) | N1—H1B | 0.925 (16) |
C10—H10A | 0.984 (16) | N2—H2A | 0.926 (16) |
C10—H10B | 0.956 (15) | N3—H3A | 0.899 (16) |
C11—C12 | 1.5262 (17) | N3—H3B | 0.901 (16) |
C11—H11A | 1.007 (16) | N4—H4 | 0.868 (16) |
C11—H11B | 0.978 (15) | O1—H1O | 0.84 |
C12—N2 | 1.4729 (16) | O3—H3O | 0.90 (3) |
C12—H12A | 0.992 (15) | O5—H5O | 0.84 |
C12—H12B | 0.977 (16) | O7—H7O | 0.92 (4) |
O2—C1—O1 | 124.03 (10) | H13A—C13—H13B | 108.0 (12) |
O2—C1—C2 | 116.00 (10) | N3—C14—C18ii | 111.28 (10) |
O1—C1—C2 | 119.95 (10) | N3—C14—H14A | 105.3 (9) |
C3—C2—C1 | 130.06 (10) | C18ii—C14—H14A | 113.4 (9) |
C3—C2—H2 | 117.8 (8) | N3—C14—H14B | 107.1 (9) |
C1—C2—H2 | 112.1 (8) | C18ii—C14—H14B | 112.9 (9) |
C2—C3—C4 | 131.25 (10) | H14A—C14—H14B | 106.4 (12) |
C2—C3—H3 | 117.6 (8) | N3—C15—C16 | 110.89 (9) |
C4—C3—H3 | 111.2 (8) | N3—C15—H15A | 107.0 (8) |
O4—C4—O3 | 122.45 (10) | C16—C15—H15A | 111.0 (8) |
O4—C4—C3 | 118.39 (10) | N3—C15—H15B | 106.9 (9) |
O3—C4—C3 | 119.12 (9) | C16—C15—H15B | 111.8 (9) |
O6—C5—O5 | 122.62 (11) | H15A—C15—H15B | 109.1 (12) |
O6—C5—C6 | 117.60 (10) | N4—C16—C15 | 109.92 (9) |
O5—C5—C6 | 119.75 (10) | N4—C16—H16A | 108.8 (8) |
C7—C6—C5 | 129.66 (11) | C15—C16—H16A | 110.0 (8) |
C7—C6—H6 | 117.9 (9) | N4—C16—H16B | 112.1 (8) |
C5—C6—H6 | 112.5 (9) | C15—C16—H16B | 109.1 (8) |
C6—C7—C8 | 130.85 (11) | H16A—C16—H16B | 106.9 (12) |
C6—C7—H7 | 117.9 (9) | N4—C17—C18 | 112.03 (10) |
C8—C7—H7 | 111.1 (9) | N4—C17—H17A | 107.8 (8) |
O8—C8—O7 | 122.06 (11) | C18—C17—H17A | 109.5 (8) |
O8—C8—C7 | 118.61 (11) | N4—C17—H17B | 110.8 (8) |
O7—C8—C7 | 119.33 (10) | C18—C17—H17B | 110.4 (9) |
N1—C9—C13i | 110.16 (9) | H17A—C17—H17B | 106.1 (12) |
N1—C9—H9A | 106.2 (9) | C14ii—C18—C17 | 114.74 (10) |
C13i—C9—H9A | 111.6 (9) | C14ii—C18—H18A | 109.1 (9) |
N1—C9—H9B | 106.7 (8) | C17—C18—H18A | 109.9 (9) |
C13i—C9—H9B | 111.9 (8) | C14ii—C18—H18B | 106.9 (9) |
H9A—C9—H9B | 110.0 (12) | C17—C18—H18B | 109.1 (9) |
N1—C10—C11 | 110.75 (10) | H18A—C18—H18B | 106.8 (13) |
N1—C10—H10A | 108.3 (9) | C9—N1—C10 | 114.46 (9) |
C11—C10—H10A | 109.9 (9) | C9—N1—H1A | 107.3 (10) |
N1—C10—H10B | 106.9 (9) | C10—N1—H1A | 107.6 (10) |
C11—C10—H10B | 112.1 (9) | C9—N1—H1B | 110.9 (9) |
H10A—C10—H10B | 108.7 (12) | C10—N1—H1B | 106.8 (9) |
C10—C11—C12 | 113.34 (10) | H1A—N1—H1B | 109.6 (13) |
C10—C11—H11A | 108.2 (9) | C13—N2—C12 | 111.75 (9) |
C12—C11—H11A | 107.7 (9) | C13—N2—H2A | 107.7 (9) |
C10—C11—H11B | 108.7 (8) | C12—N2—H2A | 107.7 (9) |
C12—C11—H11B | 111.5 (8) | C15—N3—C14 | 113.39 (9) |
H11A—C11—H11B | 107.3 (12) | C15—N3—H3A | 111.3 (9) |
N2—C12—C11 | 111.37 (10) | C14—N3—H3A | 107.3 (9) |
N2—C12—H12A | 106.5 (8) | C15—N3—H3B | 109.7 (10) |
C11—C12—H12A | 110.7 (8) | C14—N3—H3B | 108.8 (10) |
N2—C12—H12B | 111.2 (9) | H3A—N3—H3B | 106.0 (13) |
C11—C12—H12B | 109.8 (9) | C16—N4—C17 | 112.16 (9) |
H12A—C12—H12B | 107.1 (12) | C16—N4—H4 | 106.9 (10) |
N2—C13—C9i | 110.86 (10) | C17—N4—H4 | 110.3 (10) |
N2—C13—H13A | 108.1 (8) | C1—O1—H1O | 109.5 |
C9i—C13—H13A | 109.3 (8) | C4—O3—H3O | 109.3 (14) |
N2—C13—H13B | 111.2 (9) | C5—O5—H5O | 109.5 |
C9i—C13—H13B | 109.4 (9) | C8—O7—H7O | 111.2 (16) |
O2—C1—C2—C3 | 172.92 (12) | C10—C11—C12—N2 | −64.14 (14) |
O1—C1—C2—C3 | −8.76 (18) | N3—C15—C16—N4 | 63.16 (12) |
C1—C2—C3—C4 | −1.1 (2) | N4—C17—C18—C14ii | −60.25 (13) |
C2—C3—C4—O4 | −169.79 (12) | C13i—C9—N1—C10 | 171.04 (9) |
C2—C3—C4—O3 | 12.43 (18) | C11—C10—N1—C9 | −169.21 (10) |
O6—C5—C6—C7 | 169.97 (12) | C9i—C13—N2—C12 | −178.28 (10) |
O5—C5—C6—C7 | −11.73 (19) | C11—C12—N2—C13 | 179.69 (10) |
C5—C6—C7—C8 | −2.7 (2) | C16—C15—N3—C14 | −171.53 (10) |
C6—C7—C8—O8 | −167.94 (13) | C18ii—C14—N3—C15 | 176.49 (10) |
C6—C7—C8—O7 | 12.2 (2) | C15—C16—N4—C17 | −177.39 (9) |
N1—C10—C11—C12 | 67.08 (13) | C18—C17—N4—C16 | 173.98 (10) |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2iii | 0.920 (17) | 1.800 (17) | 2.7074 (13) | 168.1 (14) |
N1—H1B···N2 | 0.925 (16) | 2.015 (15) | 2.8000 (13) | 141.7 (13) |
N2—H2A···O7iv | 0.926 (16) | 2.356 (16) | 3.2134 (13) | 153.9 (13) |
N2—H2A···O8iv | 0.926 (16) | 2.379 (16) | 3.2178 (14) | 150.6 (13) |
N3—H3A···N4ii | 0.899 (16) | 2.089 (16) | 2.8046 (14) | 135.8 (13) |
N3—H3B···O5v | 0.901 (16) | 2.397 (16) | 3.0713 (13) | 131.7 (12) |
N3—H3B···O6v | 0.901 (16) | 2.037 (16) | 2.8982 (13) | 159.5 (14) |
N4—H4···O4i | 0.868 (16) | 2.348 (16) | 3.1596 (12) | 155.8 (13) |
O3—H3O···O1 | 0.90 (3) | 1.55 (3) | 2.4444 (12) | 178 (2) |
O7—H7O···O5 | 0.92 (4) | 1.50 (4) | 2.4157 (13) | 176 (3) |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y, −z; (iii) −x+1/2, y−1/2, −z+1/2; (iv) −x+3/2, y−1/2, −z+1/2; (v) x, y−1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.920 (17) | 1.800 (17) | 2.7074 (13) | 168.1 (14) |
N1—H1B···N2 | 0.925 (16) | 2.015 (15) | 2.8000 (13) | 141.7 (13) |
N2—H2A···O7ii | 0.926 (16) | 2.356 (16) | 3.2134 (13) | 153.9 (13) |
N2—H2A···O8ii | 0.926 (16) | 2.379 (16) | 3.2178 (14) | 150.6 (13) |
N3—H3A···N4iii | 0.899 (16) | 2.089 (16) | 2.8046 (14) | 135.8 (13) |
N3—H3B···O5iv | 0.901 (16) | 2.397 (16) | 3.0713 (13) | 131.7 (12) |
N3—H3B···O6iv | 0.901 (16) | 2.037 (16) | 2.8982 (13) | 159.5 (14) |
N4—H4···O4v | 0.868 (16) | 2.348 (16) | 3.1596 (12) | 155.8 (13) |
O3—H3O···O1 | 0.90 (3) | 1.55 (3) | 2.4444 (12) | 178.(2) |
O7—H7O···O5 | 0.92 (4) | 1.50 (4) | 2.4157 (13) | 176.(3) |
Symmetry codes: (i) −x+1/2, y−1/2, −z+1/2; (ii) −x+3/2, y−1/2, −z+1/2; (iii) −x+2, −y, −z; (iv) x, y−1, z; (v) −x+1, −y+1, −z. |
Acknowledgements
The authors gratefully acknowledge the Centre National de la Recherche Scientifique et Technique (CNRST-Rabat) for the financial support of this work and Moulay Ismail (Meknès) and Sidi Mohamed Ben Abdellah (Fez) Universities.
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Cyclam is doubly protonated in [H2(cyclam)(maleate)2], resulting in a maleate monoanion. The di-protonated cyclam [C10H26N4]2+ exhibits bond distances and angles in the range usually found in the literature (Melson, 1979). The two additional protons on N1 and N1A are trans to each other and interact through hydrogen bonds with the nonprotonated N2 and N2A nitrogen atoms [N1···N2= 2.800 (1) Å, N3···N4= 2.805 (1) Å]. The diprotonated macrocycle adopts an quadrangular (3,4,3,4)-C conformation (Fig. 1) according to Dale's nomenclature [(Dale, 1973 and 1976, (Hancock et al., 1996)], where the exo-cyclic nitrogen atom N2 is located two bonds away from the adjacent corner atoms C9A and C11, while the amine nitrogen atom N1A is located one bond away from the corresponding corner atom C9A and two bonds away from C11A. According to the stereochemical classification of 1,4,8,11 tetraazacyclotetradecane introduced by Bosnich et al. (1965), the cyclam ring adopts a trans-III geometry type, which, according to molecular mechanics MM-calculations, is the most stable among the five possible configurations (Bandoli et al., 1993). In the crystal structure, intramolecular hydrogen bonds occur, linking carboxylate O atoms in each maleate ion. The H3C and H7A atoms are involved in these bonds and maintain the charge balance by bridging two carboxylate groups within the structure. The complex features intra and intermolecular hydrogen bonds involving N—H···O, N—H···N and O—H···O. The main types of such bonds are those between protonated NH groups of the marcocycle and O atoms of the ionized maleic hydroxyls, between protonated and nonprotonated NH groups of the macrocycle and between O-atoms of the same ionized maleic hydroxyls as shown on Fig. 2 and 3. The values of the main H-bonds are reported in table 3.