organic compounds
(−)-N,N′-Bis[(1S,2R,5S)-6,6-dimethyl-bicyclo[3.1.1]heptan-2-ylmethyl]pyridine-2,6-dicarboxamide monohydrate
aDEP Facultad de Ciencias Químicas, UANL, Guerrero y Progreso S/N, Col. Treviño, 64570 Monterrey, NL, Mexico, and bLaboratorio de Síntesis de Complejos, Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, A.P. 1067, 72001 Puebla, Pue., Mexico
*Correspondence e-mail: sylvain_bernes@Hotmail.com
The title compound, C27H39N3O2·H2O, is a chiral pyridine-2,6-dicarboxamide derivative including cis-myrtanyl groups as amine substituents. The pyridine-2,6-dicarboxamide core approximates C2 and a solvent water molecule lies on the pseudo-twofold axis. The water molecule serves both as acceptor and donor for efficient hydrogen bonds involving N—H and C=O functional groups as donor and acceptor groups, respectively. As a result, each water molecule in the is tetrahedrally bonded to three symmetry-related molecules, forming a three-dimensional supramolecular network. Such an arrangement is a common feature found in the majority of X-ray-characterized symmetrically substituted pyridine-2,6-dicarboxamide derivatives.
Related literature
For background to the solvent–free synthesis used for the preparation of the title compound, see: Tanaka & Toda (2000); Vázquez et al. (2004); Tovar et al. (2007); Pérez-Flores & Gutiérrez (2008). For hydrates of pyridine-2,6-dicarboxamide derivatives, see: Yu et al. (1999); Qi et al. (2002); Jain et al. (2004); Odriozola et al. (2004).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: XSCANS (Siemens, 1996); cell XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and POV-RAY (Cason, 2004); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808013652/rk2088sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808013652/rk2088Isup2.hkl
Under solvent–free conditions, (-)-cis–myrtanylamine (0.38 g, 2.5 mmol) and 2,6–pyridinedicarbonyl dichloride (0.30 g, 1.5 mmol) were mixed at room temperature, giving a white solid. The crude was recrystallized from EtOH affording the corresponding dicarboxamide (98% yield).
C–bonded H atoms were placed in idealized positions and refined with a riding model approximation. Constrained C—H distances: 0.93 (aromatic CH), 0.96 (methyl CH3), 0.97 (methylene CH2) or 0.98 Å (methine CH). Isotropic displacement parameters: Uiso= 1.5Ueq(carrier C atom) for methyl groups and Uiso = 1.2Ueq(carrier C atom) otherwise. Methyl groups were considered as rigid rotating groups. Other H atoms (amine groups and water molecule) were found in a difference map and refined freely. Measured Friedel pairs (287) were merged.
Data collection: XSCANS (Siemens, 1996); cell
XSCANS (Siemens, 1996); data reduction: XSCANS (Siemens, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and POV-RAY (Cason, 2004); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C27H39N3O2·H2O | F(000) = 496 |
Mr = 455.63 | Dx = 1.140 Mg m−3 |
Monoclinic, P21 | Melting point = 398–401 K |
Hall symbol: P 2yb | Mo Kα radiation, λ = 0.71073 Å |
a = 6.8476 (11) Å | Cell parameters from 60 reflections |
b = 12.1101 (14) Å | θ = 4.6–12.5° |
c = 16.012 (2) Å | µ = 0.07 mm−1 |
β = 91.173 (15)° | T = 298 K |
V = 1327.5 (3) Å3 | Plate, colourless |
Z = 2 | 0.6 × 0.6 × 0.2 mm |
Bruker P4 diffractometer | Rint = 0.035 |
Radiation source: fine-focus sealed tube | θmax = 27.5°, θmin = 2.1° |
Graphite monochromator | h = −8→6 |
ω scans | k = −1→15 |
6391 measured reflections | l = −20→20 |
3180 independent reflections | 3 standard reflections every 97 reflections |
2580 reflections with I > 2σ(I) | intensity decay: 2% |
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)] = 0.040 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.107 | w = 1/[σ2(Fo2) + (0.0551P)2 + 0.0694P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
3180 reflections | Δρmax = 0.14 e Å−3 |
319 parameters | Δρmin = −0.13 e Å−3 |
1 restraint | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
0 constraints | Extinction coefficient: 0.037 (7) |
Primary atom site location: structure-invariant direct methods |
C27H39N3O2·H2O | V = 1327.5 (3) Å3 |
Mr = 455.63 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 6.8476 (11) Å | µ = 0.07 mm−1 |
b = 12.1101 (14) Å | T = 298 K |
c = 16.012 (2) Å | 0.6 × 0.6 × 0.2 mm |
β = 91.173 (15)° |
Bruker P4 diffractometer | Rint = 0.035 |
6391 measured reflections | 3 standard reflections every 97 reflections |
3180 independent reflections | intensity decay: 2% |
2580 reflections with I > 2σ(I) |
R[F2 > 2σ(F2)] = 0.040 | 1 restraint |
wR(F2) = 0.107 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.14 e Å−3 |
3180 reflections | Δρmin = −0.13 e Å−3 |
319 parameters |
x | y | z | Uiso*/Ueq | ||
N1 | 0.6298 (3) | 0.24506 (16) | 0.95082 (10) | 0.0520 (4) | |
N2 | 0.5268 (3) | 0.37490 (17) | 0.81930 (11) | 0.0558 (5) | |
H2 | 0.636 (4) | 0.374 (2) | 0.8414 (14) | 0.049 (6)* | |
N3 | 0.9690 (3) | 0.29137 (18) | 1.03447 (12) | 0.0576 (5) | |
H3 | 0.926 (3) | 0.330 (2) | 0.9926 (17) | 0.058 (7)* | |
O1 | 0.2258 (2) | 0.29762 (18) | 0.81492 (11) | 0.0731 (5) | |
O2 | 0.9360 (4) | 0.13912 (17) | 1.11410 (13) | 0.0893 (6) | |
C1 | 0.4749 (3) | 0.30035 (19) | 0.63787 (13) | 0.0529 (5) | |
H1A | 0.4642 | 0.2424 | 0.6803 | 0.063* | |
C2 | 0.5749 (3) | 0.4058 (2) | 0.66831 (13) | 0.0556 (5) | |
H2A | 0.7122 | 0.3869 | 0.6793 | 0.067* | |
C3 | 0.5733 (5) | 0.4954 (2) | 0.59935 (16) | 0.0724 (7) | |
H3A | 0.7040 | 0.5257 | 0.5955 | 0.087* | |
H3B | 0.4877 | 0.5549 | 0.6162 | 0.087* | |
C4 | 0.5059 (6) | 0.4548 (3) | 0.51078 (18) | 0.0866 (9) | |
H4A | 0.4046 | 0.5037 | 0.4893 | 0.104* | |
H4B | 0.6154 | 0.4589 | 0.4734 | 0.104* | |
C5 | 0.4292 (4) | 0.3386 (2) | 0.51132 (15) | 0.0737 (7) | |
H5A | 0.3843 | 0.3108 | 0.4567 | 0.088* | |
C6 | 0.2858 (3) | 0.3192 (2) | 0.58333 (14) | 0.0598 (5) | |
C7 | 0.5754 (4) | 0.2641 (2) | 0.55738 (16) | 0.0737 (7) | |
H7A | 0.7103 | 0.2878 | 0.5536 | 0.088* | |
H7B | 0.5613 | 0.1862 | 0.5445 | 0.088* | |
C8 | 0.1734 (5) | 0.2103 (3) | 0.5733 (2) | 0.0834 (8) | |
H8A | 0.0857 | 0.2152 | 0.5259 | 0.125* | |
H8B | 0.1003 | 0.1964 | 0.6227 | 0.125* | |
H8C | 0.2641 | 0.1510 | 0.5650 | 0.125* | |
C9 | 0.1402 (4) | 0.4092 (3) | 0.6038 (2) | 0.0831 (8) | |
H9A | 0.0386 | 0.4109 | 0.5617 | 0.125* | |
H9B | 0.2057 | 0.4793 | 0.6057 | 0.125* | |
H9C | 0.0843 | 0.3943 | 0.6572 | 0.125* | |
C10 | 0.4962 (4) | 0.45157 (19) | 0.74996 (14) | 0.0597 (5) | |
H10A | 0.5610 | 0.5209 | 0.7630 | 0.072* | |
H10B | 0.3576 | 0.4663 | 0.7430 | 0.072* | |
C11 | 0.9333 (3) | 0.3930 (2) | 1.20404 (14) | 0.0620 (6) | |
H11A | 0.8147 | 0.3610 | 1.1788 | 0.074* | |
C12 | 1.0879 (3) | 0.4242 (2) | 1.14197 (14) | 0.0604 (6) | |
H12A | 1.0340 | 0.4855 | 1.1088 | 0.072* | |
C13 | 1.2723 (5) | 0.4692 (3) | 1.18754 (18) | 0.0875 (9) | |
H13A | 1.3080 | 0.5385 | 1.1616 | 0.105* | |
H13B | 1.3784 | 0.4177 | 1.1788 | 0.105* | |
C14 | 1.2550 (5) | 0.4890 (3) | 1.28285 (19) | 0.0920 (10) | |
H14A | 1.3606 | 0.4507 | 1.3119 | 0.110* | |
H14B | 1.2692 | 0.5673 | 1.2942 | 0.110* | |
C15 | 1.0623 (5) | 0.4496 (3) | 1.31641 (16) | 0.0800 (8) | |
H15A | 1.0455 | 0.4611 | 1.3764 | 0.096* | |
C16 | 1.0091 (4) | 0.3322 (3) | 1.28420 (15) | 0.0737 (7) | |
C17 | 0.8967 (5) | 0.4939 (3) | 1.26053 (18) | 0.0884 (9) | |
H17A | 0.9245 | 0.5645 | 1.2346 | 0.106* | |
H17B | 0.7699 | 0.4942 | 1.2865 | 0.106* | |
C18 | 0.8353 (7) | 0.2817 (5) | 1.3307 (2) | 0.1257 (16) | |
H18A | 0.8757 | 0.2633 | 1.3868 | 0.189* | |
H18B | 0.7917 | 0.2162 | 1.3022 | 0.189* | |
H18C | 0.7305 | 0.3343 | 1.3322 | 0.189* | |
C19 | 1.1675 (6) | 0.2462 (3) | 1.2809 (2) | 0.0988 (11) | |
H19A | 1.2788 | 0.2762 | 1.2533 | 0.148* | |
H19B | 1.1201 | 0.1829 | 1.2505 | 0.148* | |
H19C | 1.2047 | 0.2245 | 1.3366 | 0.148* | |
C20 | 1.1400 (3) | 0.3334 (2) | 1.08030 (14) | 0.0637 (6) | |
H20A | 1.2328 | 0.3622 | 1.0409 | 0.076* | |
H20B | 1.2024 | 0.2731 | 1.1104 | 0.076* | |
C21 | 0.3935 (3) | 0.3035 (2) | 0.84428 (13) | 0.0548 (5) | |
C22 | 0.4577 (3) | 0.22560 (19) | 0.91276 (13) | 0.0540 (5) | |
C23 | 0.3379 (4) | 0.1377 (2) | 0.93392 (16) | 0.0700 (7) | |
H23A | 0.2180 | 0.1270 | 0.9068 | 0.084* | |
C24 | 0.4017 (5) | 0.0662 (3) | 0.99674 (19) | 0.0831 (8) | |
H24A | 0.3253 | 0.0063 | 1.0120 | 0.100* | |
C25 | 0.5781 (5) | 0.0851 (2) | 1.03575 (16) | 0.0756 (7) | |
H25A | 0.6238 | 0.0381 | 1.0777 | 0.091* | |
C26 | 0.6875 (4) | 0.17521 (19) | 1.01182 (13) | 0.0580 (5) | |
C27 | 0.8771 (4) | 0.2008 (2) | 1.05701 (14) | 0.0625 (6) | |
O3 | 0.9282 (3) | 0.42517 (19) | 0.87612 (13) | 0.0712 (5) | |
H31 | 0.970 (6) | 0.493 (4) | 0.871 (2) | 0.103 (12)* | |
H32 | 1.020 (6) | 0.384 (4) | 0.851 (2) | 0.111 (13)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0609 (10) | 0.0502 (9) | 0.0449 (8) | −0.0055 (8) | 0.0042 (7) | −0.0049 (8) |
N2 | 0.0580 (10) | 0.0596 (11) | 0.0496 (9) | −0.0052 (9) | −0.0080 (8) | −0.0031 (8) |
N3 | 0.0677 (11) | 0.0598 (11) | 0.0448 (9) | 0.0007 (10) | −0.0059 (8) | −0.0011 (9) |
O1 | 0.0527 (8) | 0.0858 (12) | 0.0805 (11) | −0.0020 (9) | −0.0054 (8) | −0.0119 (10) |
O2 | 0.1293 (17) | 0.0611 (11) | 0.0760 (12) | 0.0033 (12) | −0.0296 (11) | 0.0112 (10) |
C1 | 0.0608 (11) | 0.0457 (10) | 0.0521 (10) | 0.0023 (10) | −0.0015 (9) | −0.0007 (9) |
C2 | 0.0563 (11) | 0.0551 (12) | 0.0553 (11) | −0.0027 (10) | −0.0024 (9) | −0.0011 (10) |
C3 | 0.0943 (18) | 0.0577 (14) | 0.0651 (14) | −0.0191 (14) | −0.0012 (13) | 0.0020 (12) |
C4 | 0.127 (2) | 0.0740 (17) | 0.0585 (14) | −0.0293 (18) | −0.0019 (15) | 0.0070 (13) |
C5 | 0.1024 (19) | 0.0689 (16) | 0.0497 (12) | −0.0215 (15) | −0.0041 (12) | −0.0041 (12) |
C6 | 0.0670 (13) | 0.0535 (12) | 0.0584 (12) | −0.0066 (11) | −0.0102 (9) | 0.0019 (10) |
C7 | 0.0846 (16) | 0.0659 (15) | 0.0711 (15) | −0.0043 (13) | 0.0138 (13) | −0.0193 (13) |
C8 | 0.0909 (18) | 0.0741 (18) | 0.0846 (18) | −0.0257 (16) | −0.0117 (15) | −0.0012 (15) |
C9 | 0.0700 (15) | 0.0827 (18) | 0.096 (2) | 0.0101 (15) | −0.0225 (14) | −0.0004 (16) |
C10 | 0.0726 (13) | 0.0508 (12) | 0.0553 (11) | −0.0009 (11) | −0.0083 (10) | −0.0044 (10) |
C11 | 0.0634 (13) | 0.0698 (15) | 0.0523 (11) | 0.0122 (11) | −0.0061 (9) | −0.0083 (11) |
C12 | 0.0732 (14) | 0.0547 (13) | 0.0527 (11) | 0.0017 (11) | −0.0121 (10) | 0.0028 (10) |
C13 | 0.0916 (19) | 0.100 (2) | 0.0709 (16) | −0.0322 (18) | −0.0087 (14) | −0.0056 (16) |
C14 | 0.118 (2) | 0.088 (2) | 0.0689 (16) | −0.0129 (19) | −0.0287 (16) | −0.0106 (15) |
C15 | 0.105 (2) | 0.0843 (19) | 0.0502 (12) | 0.0075 (17) | −0.0120 (12) | −0.0118 (13) |
C16 | 0.0944 (17) | 0.0774 (18) | 0.0491 (12) | −0.0003 (15) | −0.0076 (11) | 0.0035 (12) |
C17 | 0.102 (2) | 0.092 (2) | 0.0702 (16) | 0.0267 (18) | −0.0074 (14) | −0.0248 (16) |
C18 | 0.154 (3) | 0.151 (4) | 0.0734 (19) | −0.040 (3) | 0.026 (2) | 0.006 (2) |
C19 | 0.145 (3) | 0.0752 (19) | 0.0743 (17) | 0.023 (2) | −0.0426 (19) | 0.0044 (16) |
C20 | 0.0604 (12) | 0.0768 (17) | 0.0539 (11) | 0.0021 (12) | −0.0013 (9) | −0.0068 (12) |
C21 | 0.0500 (11) | 0.0603 (12) | 0.0542 (11) | −0.0010 (10) | 0.0036 (8) | −0.0155 (10) |
C22 | 0.0580 (12) | 0.0564 (12) | 0.0481 (10) | −0.0066 (10) | 0.0098 (9) | −0.0131 (9) |
C23 | 0.0706 (15) | 0.0743 (16) | 0.0654 (14) | −0.0205 (13) | 0.0127 (11) | −0.0153 (13) |
C24 | 0.101 (2) | 0.0730 (17) | 0.0755 (16) | −0.0347 (16) | 0.0194 (15) | 0.0035 (14) |
C25 | 0.108 (2) | 0.0615 (15) | 0.0573 (13) | −0.0187 (15) | 0.0054 (13) | 0.0036 (12) |
C26 | 0.0786 (14) | 0.0501 (11) | 0.0456 (10) | −0.0036 (11) | 0.0059 (10) | −0.0029 (9) |
C27 | 0.0860 (16) | 0.0513 (12) | 0.0501 (11) | 0.0064 (12) | −0.0031 (11) | −0.0034 (10) |
O3 | 0.0613 (10) | 0.0674 (12) | 0.0853 (12) | −0.0080 (10) | 0.0110 (8) | −0.0047 (10) |
N1—C22 | 1.337 (3) | C11—C17 | 1.544 (4) |
N1—C26 | 1.345 (3) | C11—C16 | 1.559 (3) |
N2—C21 | 1.325 (3) | C11—H11A | 0.9800 |
N2—C10 | 1.459 (3) | C12—C20 | 1.525 (4) |
N2—H2 | 0.82 (2) | C12—C13 | 1.545 (4) |
N3—C27 | 1.318 (3) | C12—H12A | 0.9800 |
N3—C20 | 1.461 (3) | C13—C14 | 1.552 (4) |
N3—H3 | 0.86 (3) | C13—H13A | 0.9700 |
O1—C21 | 1.234 (3) | C13—H13B | 0.9700 |
O2—C27 | 1.242 (3) | C14—C15 | 1.512 (5) |
C1—C2 | 1.524 (3) | C14—H14A | 0.9700 |
C1—C7 | 1.537 (3) | C14—H14B | 0.9700 |
C1—C6 | 1.564 (3) | C15—C17 | 1.527 (4) |
C1—H1A | 0.9800 | C15—C16 | 1.553 (4) |
C2—C10 | 1.528 (3) | C15—H15A | 0.9800 |
C2—C3 | 1.548 (3) | C16—C19 | 1.506 (5) |
C2—H2A | 0.9800 | C16—C18 | 1.543 (5) |
C3—C4 | 1.562 (4) | C17—H17A | 0.9700 |
C3—H3A | 0.9700 | C17—H17B | 0.9700 |
C3—H3B | 0.9700 | C18—H18A | 0.9600 |
C4—C5 | 1.502 (4) | C18—H18B | 0.9600 |
C4—H4A | 0.9700 | C18—H18C | 0.9600 |
C4—H4B | 0.9700 | C19—H19A | 0.9600 |
C5—C7 | 1.526 (4) | C19—H19B | 0.9600 |
C5—C6 | 1.548 (4) | C19—H19C | 0.9600 |
C5—H5A | 0.9800 | C20—H20A | 0.9700 |
C6—C9 | 1.518 (4) | C20—H20B | 0.9700 |
C6—C8 | 1.534 (4) | C21—C22 | 1.505 (3) |
C7—H7A | 0.9700 | C22—C23 | 1.390 (4) |
C7—H7B | 0.9700 | C23—C24 | 1.391 (4) |
C8—H8A | 0.9600 | C23—H23A | 0.9300 |
C8—H8B | 0.9600 | C24—C25 | 1.368 (4) |
C8—H8C | 0.9600 | C24—H24A | 0.9300 |
C9—H9A | 0.9600 | C25—C26 | 1.382 (4) |
C9—H9B | 0.9600 | C25—H25A | 0.9300 |
C9—H9C | 0.9600 | C26—C27 | 1.506 (3) |
C10—H10A | 0.9700 | O3—H31 | 0.87 (5) |
C10—H10B | 0.9700 | O3—H32 | 0.90 (4) |
C11—C12 | 1.514 (4) | ||
C22—N1—C26 | 117.60 (19) | C20—C12—C13 | 111.1 (2) |
C21—N2—C10 | 123.8 (2) | C11—C12—H12A | 106.5 |
C21—N2—H2 | 119.2 (17) | C20—C12—H12A | 106.5 |
C10—N2—H2 | 116.9 (17) | C13—C12—H12A | 106.5 |
C27—N3—C20 | 122.3 (2) | C12—C13—C14 | 116.2 (3) |
C27—N3—H3 | 120.2 (17) | C12—C13—H13A | 108.2 |
C20—N3—H3 | 117.4 (17) | C14—C13—H13A | 108.2 |
C2—C1—C7 | 107.55 (19) | C12—C13—H13B | 108.2 |
C2—C1—C6 | 114.69 (18) | C14—C13—H13B | 108.2 |
C7—C1—C6 | 87.32 (18) | H13A—C13—H13B | 107.4 |
C2—C1—H1A | 114.7 | C15—C14—C13 | 112.7 (2) |
C7—C1—H1A | 114.7 | C15—C14—H14A | 109.1 |
C6—C1—H1A | 114.7 | C13—C14—H14A | 109.1 |
C1—C2—C10 | 114.43 (19) | C15—C14—H14B | 109.1 |
C1—C2—C3 | 111.28 (17) | C13—C14—H14B | 109.1 |
C10—C2—C3 | 111.0 (2) | H14A—C14—H14B | 107.8 |
C1—C2—H2A | 106.5 | C14—C15—C17 | 108.9 (3) |
C10—C2—H2A | 106.5 | C14—C15—C16 | 111.8 (3) |
C3—C2—H2A | 106.5 | C17—C15—C16 | 87.8 (2) |
C2—C3—C4 | 115.1 (2) | C14—C15—H15A | 115.1 |
C2—C3—H3A | 108.5 | C17—C15—H15A | 115.1 |
C4—C3—H3A | 108.5 | C16—C15—H15A | 115.1 |
C2—C3—H3B | 108.5 | C19—C16—C18 | 107.8 (3) |
C4—C3—H3B | 108.5 | C19—C16—C15 | 118.8 (3) |
H3A—C3—H3B | 107.5 | C18—C16—C15 | 112.3 (3) |
C5—C4—C3 | 112.8 (2) | C19—C16—C11 | 121.7 (2) |
C5—C4—H4A | 109.0 | C18—C16—C11 | 109.7 (3) |
C3—C4—H4A | 109.0 | C15—C16—C11 | 85.0 (2) |
C5—C4—H4B | 109.0 | C15—C17—C11 | 86.4 (2) |
C3—C4—H4B | 109.0 | C15—C17—H17A | 114.3 |
H4A—C4—H4B | 107.8 | C11—C17—H17A | 114.3 |
C4—C5—C7 | 109.3 (2) | C15—C17—H17B | 114.3 |
C4—C5—C6 | 111.9 (2) | C11—C17—H17B | 114.2 |
C7—C5—C6 | 88.31 (19) | H17A—C17—H17B | 111.4 |
C4—C5—H5A | 114.8 | C16—C18—H18A | 109.5 |
C7—C5—H5A | 114.8 | C16—C18—H18B | 109.5 |
C6—C5—H5A | 114.8 | H18A—C18—H18B | 109.5 |
C9—C6—C8 | 108.1 (2) | C16—C18—H18C | 109.5 |
C9—C6—C5 | 118.8 (2) | H18A—C18—H18C | 109.5 |
C8—C6—C5 | 112.2 (2) | H18B—C18—H18C | 109.5 |
C9—C6—C1 | 121.6 (2) | C16—C19—H19A | 109.5 |
C8—C6—C1 | 109.9 (2) | C16—C19—H19B | 109.5 |
C5—C6—C1 | 84.67 (18) | H19A—C19—H19B | 109.5 |
C5—C7—C1 | 86.32 (19) | C16—C19—H19C | 109.5 |
C5—C7—H7A | 114.3 | H19A—C19—H19C | 109.5 |
C1—C7—H7A | 114.3 | H19B—C19—H19C | 109.5 |
C5—C7—H7B | 114.3 | N3—C20—C12 | 112.38 (19) |
C1—C7—H7B | 114.3 | N3—C20—H20A | 109.1 |
H7A—C7—H7B | 111.4 | C12—C20—H20A | 109.1 |
C6—C8—H8A | 109.5 | N3—C20—H20B | 109.1 |
C6—C8—H8B | 109.5 | C12—C20—H20B | 109.1 |
H8A—C8—H8B | 109.5 | H20A—C20—H20B | 107.9 |
C6—C8—H8C | 109.5 | O1—C21—N2 | 124.4 (2) |
H8A—C8—H8C | 109.5 | O1—C21—C22 | 119.8 (2) |
H8B—C8—H8C | 109.5 | N2—C21—C22 | 115.86 (18) |
C6—C9—H9A | 109.5 | N1—C22—C23 | 122.9 (2) |
C6—C9—H9B | 109.5 | N1—C22—C21 | 117.59 (19) |
H9A—C9—H9B | 109.5 | C23—C22—C21 | 119.5 (2) |
C6—C9—H9C | 109.5 | C22—C23—C24 | 118.4 (2) |
H9A—C9—H9C | 109.5 | C22—C23—H23A | 120.8 |
H9B—C9—H9C | 109.5 | C24—C23—H23A | 120.8 |
N2—C10—C2 | 111.88 (19) | C25—C24—C23 | 119.2 (3) |
N2—C10—H10A | 109.2 | C25—C24—H24A | 120.4 |
C2—C10—H10A | 109.2 | C23—C24—H24A | 120.4 |
N2—C10—H10B | 109.2 | C24—C25—C26 | 118.9 (3) |
C2—C10—H10B | 109.2 | C24—C25—H25A | 120.5 |
H10A—C10—H10B | 107.9 | C26—C25—H25A | 120.5 |
C12—C11—C17 | 108.1 (2) | N1—C26—C25 | 123.0 (2) |
C12—C11—C16 | 115.7 (2) | N1—C26—C27 | 117.2 (2) |
C17—C11—C16 | 86.95 (19) | C25—C26—C27 | 119.7 (2) |
C12—C11—H11A | 114.3 | O2—C27—N3 | 123.5 (2) |
C17—C11—H11A | 114.3 | O2—C27—C26 | 119.6 (2) |
C16—C11—H11A | 114.3 | N3—C27—C26 | 116.9 (2) |
C11—C12—C20 | 114.9 (2) | H31—O3—H32 | 103 (4) |
C11—C12—C13 | 110.7 (2) | ||
C7—C1—C2—C10 | −178.2 (2) | C14—C15—C16—C18 | 168.8 (3) |
C6—C1—C2—C10 | 86.5 (2) | C17—C15—C16—C18 | −81.7 (3) |
C7—C1—C2—C3 | 54.9 (3) | C14—C15—C16—C11 | −81.9 (2) |
C6—C1—C2—C3 | −40.3 (3) | C17—C15—C16—C11 | 27.6 (2) |
C1—C2—C3—C4 | −10.1 (4) | C12—C11—C16—C19 | −39.6 (4) |
C10—C2—C3—C4 | −138.8 (3) | C17—C11—C16—C19 | −148.2 (3) |
C2—C3—C4—C5 | 7.6 (4) | C12—C11—C16—C18 | −166.7 (3) |
C3—C4—C5—C7 | −50.0 (4) | C17—C11—C16—C18 | 84.7 (3) |
C3—C4—C5—C6 | 46.1 (4) | C12—C11—C16—C15 | 81.3 (3) |
C4—C5—C6—C9 | 40.2 (3) | C17—C11—C16—C15 | −27.3 (2) |
C7—C5—C6—C9 | 150.4 (2) | C14—C15—C17—C11 | 84.4 (3) |
C4—C5—C6—C8 | 167.5 (3) | C16—C15—C17—C11 | −27.8 (2) |
C7—C5—C6—C8 | −82.3 (2) | C12—C11—C17—C15 | −88.3 (2) |
C4—C5—C6—C1 | −83.1 (2) | C16—C11—C17—C15 | 27.7 (2) |
C7—C5—C6—C1 | 27.07 (17) | C27—N3—C20—C12 | −97.3 (3) |
C2—C1—C6—C9 | −39.5 (3) | C11—C12—C20—N3 | 55.0 (3) |
C7—C1—C6—C9 | −147.6 (3) | C13—C12—C20—N3 | −178.4 (2) |
C2—C1—C6—C8 | −167.1 (2) | C10—N2—C21—O1 | −4.0 (3) |
C7—C1—C6—C8 | 84.8 (2) | C10—N2—C21—C22 | 175.63 (19) |
C2—C1—C6—C5 | 81.2 (2) | C26—N1—C22—C23 | 0.4 (3) |
C7—C1—C6—C5 | −26.87 (18) | C26—N1—C22—C21 | −179.78 (18) |
C4—C5—C7—C1 | 85.2 (3) | O1—C21—C22—N1 | −170.6 (2) |
C6—C5—C7—C1 | −27.51 (18) | N2—C21—C22—N1 | 9.8 (3) |
C2—C1—C7—C5 | −87.9 (2) | O1—C21—C22—C23 | 9.3 (3) |
C6—C1—C7—C5 | 27.22 (18) | N2—C21—C22—C23 | −170.4 (2) |
C21—N2—C10—C2 | −95.3 (3) | N1—C22—C23—C24 | −0.9 (4) |
C1—C2—C10—N2 | 62.7 (2) | C21—C22—C23—C24 | 179.2 (2) |
C3—C2—C10—N2 | −170.3 (2) | C22—C23—C24—C25 | 0.5 (4) |
C17—C11—C12—C20 | −179.3 (2) | C23—C24—C25—C26 | 0.3 (4) |
C16—C11—C12—C20 | 85.2 (3) | C22—N1—C26—C25 | 0.6 (3) |
C17—C11—C12—C13 | 53.8 (3) | C22—N1—C26—C27 | −177.24 (19) |
C16—C11—C12—C13 | −41.6 (3) | C24—C25—C26—N1 | −0.9 (4) |
C11—C12—C13—C14 | −8.2 (4) | C24—C25—C26—C27 | 176.8 (3) |
C20—C12—C13—C14 | −137.1 (3) | C20—N3—C27—O2 | −6.1 (4) |
C12—C13—C14—C15 | 5.6 (5) | C20—N3—C27—C26 | 171.8 (2) |
C13—C14—C15—C17 | −48.7 (4) | N1—C26—C27—O2 | 179.6 (2) |
C13—C14—C15—C16 | 46.6 (4) | C25—C26—C27—O2 | 1.8 (3) |
C14—C15—C16—C19 | 41.7 (3) | N1—C26—C27—N3 | 1.6 (3) |
C17—C15—C16—C19 | 151.2 (3) | C25—C26—C27—N3 | −176.2 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O3 | 0.82 (2) | 2.16 (2) | 2.941 (3) | 160 (2) |
N3—H3···O3 | 0.86 (3) | 2.19 (3) | 3.017 (3) | 159 (2) |
O3—H31···O2i | 0.87 (5) | 1.90 (5) | 2.756 (3) | 167 (4) |
O3—H32···O1ii | 0.90 (4) | 1.86 (5) | 2.754 (3) | 171 (3) |
Symmetry codes: (i) −x+2, y+1/2, −z+2; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C27H39N3O2·H2O |
Mr | 455.63 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 298 |
a, b, c (Å) | 6.8476 (11), 12.1101 (14), 16.012 (2) |
β (°) | 91.173 (15) |
V (Å3) | 1327.5 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.07 |
Crystal size (mm) | 0.6 × 0.6 × 0.2 |
Data collection | |
Diffractometer | Bruker P4 diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6391, 3180, 2580 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.107, 1.04 |
No. of reflections | 3180 |
No. of parameters | 319 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.14, −0.13 |
Computer programs: XSCANS (Siemens, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and POV-RAY (Cason, 2004).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O3 | 0.82 (2) | 2.16 (2) | 2.941 (3) | 160 (2) |
N3—H3···O3 | 0.86 (3) | 2.19 (3) | 3.017 (3) | 159 (2) |
O3—H31···O2i | 0.87 (5) | 1.90 (5) | 2.756 (3) | 167 (4) |
O3—H32···O1ii | 0.90 (4) | 1.86 (5) | 2.754 (3) | 171 (3) |
Symmetry codes: (i) −x+2, y+1/2, −z+2; (ii) x+1, y, z. |
Acknowledgements
Partial support from VIEP–UAP (14/G/NAT/05) is acknowledged.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Nowadays, reactions conducted in the absence of solvents under mild reaction conditions are becoming an important method in laboratories worldwide as an environment–friendly technique for the efficient syntheses of organic molecules. The main advantages of solvent-free organic synthesis are shorter reaction times, minimum waste and generally higher yields, operational simplicity as well as reduction of thermal degradative byproducts along with cleaner work–up (Tanaka & Toda, 2000). As part of an ongoing program aiming to develop simpler and eco–friendly methods for organic transformations under solvent–free conditions (Tovar et al., 2007; Vázquez et al., 2004), we engaged the preparation of chiral pincer ligands (Pérez-Flores & Gutiérrez, 2008). The title compound resulted from this research, by introducing chiral cis–myrtanyl groups as amine substituents.
The X–ray characterized monohydrate has the expected molecular geometry (Fig. 1). The pyridine–2,6–dicarboxamide core approximates a C2 point symmetry, with the pseudo 2–fold axis passing through N1 and C24. The guest water molecule O3 is placed on the pseudo 2–fold axis and is involved in two N—H···O hydrogen bonds within the asymmetric unit (Fig. 1 and Table 1, lines 1 and 2). The same water molecule is a donor group for two C═O···H intermolecular hydrogen bonds of relatively strong strength (Table 1, lines 3 and 4). As a consequence, a three–dimensional supramolecular structure is formed in the crystal structure, with water molecules being bonded in a tetrahedral arrangement (Fig. 2) to three symmetry–related molecules. Such a feature seems to be common for symmetrically substituted pyridine–2,6–dicarboxamide derivatives. These compounds are generally crystallized as hydrates, and, at least for X–ray characterized compounds, water molecules form hydrogen bonds similar to those observed in the title molecule (e.g. Yu et al., 1999; Qi et al., 2002; Jain et al., 2004; Odriozola et al., 2004).