metal-organic compounds
{1,5,9-Tris[(2S)-2-hydroxypropyl]-1,5,9-triazacyclododecane}zinc(II) dinitrate monohydrate
aDepartment of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
*Correspondence e-mail: rcluckay@sun.ac.za
In the title compound, [Zn(C18H39N3O3)](NO3)2·H2O, the coordination geometry around the central ZnII atom is distorted octahedral. The hydroxyl groups in the macrocyclic ligand and water molecules are engaged in O—H⋯O hydrogen bonding, which forms two-dimensional corrugated sheets comprising 34-membered rings. Neighbouring sheets are connected by C—H⋯O interactions.
Related literature
For the synthesis, see: Richman & Atkins (1974); Sabatini & Fabrizzi (1979). For background to azamacrocycles, see: Skerlj et al. (2002). For the use of functionalised macrocycles in the synthesis of metal-chelating agents for medical applications, see: Sheng et al. (2007).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Atwood & Barbour, 2003; Barbour, 2001); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536810006410/ci5025sup1.cif
contains datablocks I, Global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810006410/ci5025Isup2.hkl
The chiral macrocyclic ligand 1,5,9-tris[(2S)-2-hydroxypropyl]-1,5,9-triazacyclododecane was prepared by treating three equivalents and a slight excess of (S)-methyloxirane with 1,5,9-triazacyclododecane in absolute ethanol. This solution was stirred at room temperature for 3 days. 1,5,9-Triazacyclododecane was prepared using a modified method of Richman & Atkins (1974) and Sabatini & Fabrizzi (1979).
One equivalent of Zn(NO3)2.6H2O was dissolved in ethanol at 333 K with stirring. The ligand was added to the solution and it was stirred overnight. The powder which formed was filtered off and dissolved in a small quantity of N,N-dimethylformamide whereupon diethyl ether vapour was slowly diffused into the solution in a sealed container. Single crystals were obtained the next day.
Alkyl H atoms were positioned geometrically (C–H = 1.00, 0.99 and 0.98 Å for CH, CH2 and CH3 groups, respectively) and allowed to ride on their parent atoms. Hydroxyl and water O–H distances were restrained to 0.85 (1) Å and additional restraint H4···H5 distance restraint of 1.37 (1) Å was applied to the water molecule. Uiso(H) values were set at 1.2 times Ueq(C,O) except for methyl groups where Uiso(H) was set at 1.5 times Ueq(C).
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Atwood & Barbour, 2003; Barbour, 2001); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The asymmetric unit of the title compound. Displacement ellipsoids are drawn at the 50% probability level. | |
Fig. 2. Part of the infinite sheet formed by hydrogen bonds (dashed lines). |
[Zn(C18H39N3O3)](NO3)2·H2O | F(000) = 1176 |
Mr = 552.93 | Dx = 1.482 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2897 reflections |
a = 10.1558 (10) Å | θ = 2.4–21.4° |
b = 15.4883 (15) Å | µ = 1.05 mm−1 |
c = 15.7498 (15) Å | T = 100 K |
V = 2477.4 (4) Å3 | Block, colourless |
Z = 4 | 0.16 × 0.15 × 0.11 mm |
Bruker APEX CCD area-detector diffractometer | 5102 independent reflections |
Radiation source: fine-focus sealed tube | 4378 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.042 |
ω–scans | θmax = 26.4°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −12→10 |
Tmin = 0.497, Tmax = 0.890 | k = −19→12 |
14715 measured reflections | l = −18→19 |
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)] = 0.048 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.113 | w = 1/[σ2(Fo2) + (0.0571P)2 + 0.2902P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max = 0.001 |
5102 reflections | Δρmax = 0.83 e Å−3 |
325 parameters | Δρmin = −0.47 e Å−3 |
6 restraints | Absolute structure: Flack (1983), 2219 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.003 (15) |
[Zn(C18H39N3O3)](NO3)2·H2O | V = 2477.4 (4) Å3 |
Mr = 552.93 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 10.1558 (10) Å | µ = 1.05 mm−1 |
b = 15.4883 (15) Å | T = 100 K |
c = 15.7498 (15) Å | 0.16 × 0.15 × 0.11 mm |
Bruker APEX CCD area-detector diffractometer | 5102 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 4378 reflections with I > 2σ(I) |
Tmin = 0.497, Tmax = 0.890 | Rint = 0.042 |
14715 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.113 | Δρmax = 0.83 e Å−3 |
S = 1.05 | Δρmin = −0.47 e Å−3 |
5102 reflections | Absolute structure: Flack (1983), 2219 Friedel pairs |
325 parameters | Absolute structure parameter: −0.003 (15) |
6 restraints |
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 > 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 | ||
Zn1 | 0.36584 (4) | 0.27731 (2) | 0.26347 (3) | 0.02956 (13) | |
O1 | 0.5352 (2) | 0.20359 (16) | 0.24231 (17) | 0.0361 (6) | |
H1 | 0.579 (4) | 0.180 (3) | 0.282 (2) | 0.054* | |
O2 | 0.3145 (3) | 0.17597 (18) | 0.34919 (18) | 0.0384 (7) | |
H2 | 0.253 (4) | 0.141 (3) | 0.337 (3) | 0.058* | |
O3 | 0.2876 (3) | 0.18319 (16) | 0.16470 (18) | 0.0335 (6) | |
H3 | 0.333 (4) | 0.163 (3) | 0.124 (2) | 0.050* | |
N1 | 0.4853 (3) | 0.3643 (2) | 0.1868 (2) | 0.0351 (8) | |
N2 | 0.4049 (4) | 0.3366 (2) | 0.3861 (2) | 0.0445 (9) | |
N3 | 0.1732 (3) | 0.32353 (18) | 0.2361 (2) | 0.0350 (7) | |
C1 | 0.5873 (4) | 0.4178 (3) | 0.2327 (3) | 0.0461 (11) | |
H1A | 0.6652 | 0.3811 | 0.2441 | 0.055* | |
H1B | 0.6158 | 0.4654 | 0.1949 | 0.055* | |
C2 | 0.5404 (5) | 0.4553 (3) | 0.3145 (4) | 0.0617 (15) | |
H2A | 0.6020 | 0.5013 | 0.3325 | 0.074* | |
H2B | 0.4530 | 0.4820 | 0.3055 | 0.074* | |
C3 | 0.5301 (6) | 0.3898 (3) | 0.3834 (4) | 0.0608 (14) | |
H3A | 0.5391 | 0.4200 | 0.4385 | 0.073* | |
H3B | 0.6056 | 0.3498 | 0.3781 | 0.073* | |
C4 | 0.2927 (6) | 0.3893 (3) | 0.4213 (3) | 0.0554 (13) | |
H4A | 0.3306 | 0.4377 | 0.4543 | 0.067* | |
H4B | 0.2431 | 0.3526 | 0.4616 | 0.067* | |
C5 | 0.1959 (5) | 0.4264 (3) | 0.3581 (3) | 0.0497 (12) | |
H5A | 0.1377 | 0.4675 | 0.3883 | 0.060* | |
H5B | 0.2457 | 0.4595 | 0.3150 | 0.060* | |
C6 | 0.1110 (4) | 0.3611 (3) | 0.3131 (3) | 0.0459 (11) | |
H6A | 0.0897 | 0.3138 | 0.3531 | 0.055* | |
H6B | 0.0272 | 0.3891 | 0.2965 | 0.055* | |
C7 | 0.1678 (4) | 0.3901 (3) | 0.1664 (3) | 0.0421 (11) | |
H7A | 0.0837 | 0.3826 | 0.1354 | 0.051* | |
H7B | 0.1656 | 0.4480 | 0.1931 | 0.051* | |
C8 | 0.2779 (5) | 0.3893 (3) | 0.1023 (3) | 0.0446 (11) | |
H8A | 0.2503 | 0.4233 | 0.0522 | 0.054* | |
H8B | 0.2923 | 0.3291 | 0.0834 | 0.054* | |
C9 | 0.4068 (4) | 0.4252 (3) | 0.1350 (3) | 0.0454 (12) | |
H9A | 0.4606 | 0.4437 | 0.0858 | 0.054* | |
H9B | 0.3880 | 0.4771 | 0.1696 | 0.054* | |
C10 | 0.5550 (4) | 0.3027 (2) | 0.1298 (3) | 0.0341 (9) | |
H10A | 0.6191 | 0.3348 | 0.0945 | 0.041* | |
H10B | 0.4903 | 0.2753 | 0.0913 | 0.041* | |
C11 | 0.6259 (4) | 0.2340 (2) | 0.1788 (3) | 0.0376 (9) | |
H11 | 0.7049 | 0.2597 | 0.2072 | 0.045* | |
C12 | 0.6688 (4) | 0.1599 (3) | 0.1224 (3) | 0.0455 (11) | |
H12A | 0.7148 | 0.1165 | 0.1566 | 0.068* | |
H12B | 0.7281 | 0.1816 | 0.0781 | 0.068* | |
H12C | 0.5912 | 0.1336 | 0.0959 | 0.068* | |
C13 | 0.4320 (5) | 0.2628 (3) | 0.4426 (3) | 0.0487 (12) | |
H13A | 0.4376 | 0.2839 | 0.5018 | 0.058* | |
H13B | 0.5185 | 0.2377 | 0.4274 | 0.058* | |
C14 | 0.3291 (5) | 0.1933 (3) | 0.4378 (3) | 0.0445 (12) | |
H14 | 0.2441 | 0.2158 | 0.4609 | 0.053* | |
C15 | 0.3691 (6) | 0.1138 (3) | 0.4862 (3) | 0.0534 (12) | |
H15A | 0.3016 | 0.0691 | 0.4794 | 0.080* | |
H15B | 0.3783 | 0.1280 | 0.5466 | 0.080* | |
H15C | 0.4533 | 0.0924 | 0.4643 | 0.080* | |
C16 | 0.0934 (4) | 0.2471 (3) | 0.2103 (3) | 0.0402 (11) | |
H16A | 0.0049 | 0.2669 | 0.1925 | 0.048* | |
H16B | 0.0821 | 0.2087 | 0.2600 | 0.048* | |
C17 | 0.1541 (4) | 0.1966 (2) | 0.1393 (3) | 0.0379 (10) | |
H17 | 0.1519 | 0.2316 | 0.0860 | 0.046* | |
C18 | 0.0816 (5) | 0.1124 (3) | 0.1254 (3) | 0.0467 (11) | |
H18A | 0.1221 | 0.0810 | 0.0781 | 0.070* | |
H18B | −0.0109 | 0.1245 | 0.1120 | 0.070* | |
H18C | 0.0865 | 0.0773 | 0.1771 | 0.070* | |
O4 | 0.1292 (4) | 0.0583 (3) | 0.3391 (3) | 0.0907 (15) | |
H4C | 0.048 (2) | 0.071 (4) | 0.335 (5) | 0.136* | |
H4D | 0.136 (7) | 0.009 (2) | 0.360 (5) | 0.136* | |
N4 | 0.3691 (4) | 0.1325 (2) | −0.0369 (2) | 0.0342 (7) | |
O5 | 0.3483 (3) | 0.10720 (19) | −0.11152 (19) | 0.0468 (7) | |
O6 | 0.3717 (4) | 0.08361 (19) | 0.0223 (2) | 0.0583 (9) | |
O7 | 0.3868 (4) | 0.21105 (19) | −0.0261 (2) | 0.0575 (9) | |
N5 | 0.7946 (4) | 0.1494 (2) | 0.3579 (2) | 0.0411 (9) | |
O8 | 0.8856 (6) | 0.1023 (4) | 0.3790 (4) | 0.143 (3) | |
O9 | 0.8147 (4) | 0.2251 (3) | 0.3530 (2) | 0.0804 (13) | |
O10 | 0.6844 (5) | 0.1216 (3) | 0.3546 (3) | 0.1017 (19) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.0250 (2) | 0.0255 (2) | 0.0382 (2) | −0.00091 (18) | 0.00286 (18) | −0.00223 (18) |
O1 | 0.0246 (13) | 0.0392 (15) | 0.0447 (16) | 0.0011 (11) | 0.0036 (12) | 0.0023 (13) |
O2 | 0.0355 (18) | 0.0408 (17) | 0.0388 (16) | −0.0051 (13) | 0.0048 (13) | 0.0042 (13) |
O3 | 0.0261 (15) | 0.0302 (15) | 0.0442 (17) | −0.0022 (11) | 0.0004 (12) | −0.0033 (12) |
N1 | 0.0268 (18) | 0.0218 (15) | 0.057 (2) | −0.0059 (13) | 0.0024 (16) | −0.0041 (15) |
N2 | 0.049 (2) | 0.0370 (19) | 0.048 (2) | 0.0009 (16) | 0.0025 (17) | −0.0158 (17) |
N3 | 0.0273 (17) | 0.0231 (15) | 0.055 (2) | 0.0008 (12) | 0.0035 (15) | 0.0006 (15) |
C1 | 0.033 (2) | 0.031 (2) | 0.075 (3) | −0.0117 (16) | 0.005 (2) | −0.015 (2) |
C2 | 0.048 (3) | 0.053 (3) | 0.084 (4) | −0.015 (2) | 0.005 (3) | −0.029 (3) |
C3 | 0.064 (4) | 0.051 (3) | 0.068 (3) | −0.014 (3) | −0.010 (3) | −0.021 (3) |
C4 | 0.057 (3) | 0.046 (3) | 0.062 (3) | 0.006 (2) | 0.009 (3) | −0.019 (2) |
C5 | 0.051 (3) | 0.035 (2) | 0.063 (3) | 0.010 (2) | 0.011 (2) | −0.011 (2) |
C6 | 0.033 (3) | 0.037 (2) | 0.068 (3) | 0.0029 (19) | 0.015 (2) | −0.001 (2) |
C7 | 0.032 (3) | 0.028 (2) | 0.067 (3) | 0.0011 (17) | −0.001 (2) | 0.004 (2) |
C8 | 0.045 (3) | 0.032 (2) | 0.057 (3) | 0.003 (2) | −0.001 (2) | 0.013 (2) |
C9 | 0.039 (3) | 0.028 (2) | 0.069 (3) | −0.0013 (18) | 0.011 (2) | 0.009 (2) |
C10 | 0.024 (2) | 0.028 (2) | 0.050 (2) | −0.0027 (15) | 0.0077 (18) | −0.0040 (17) |
C11 | 0.0243 (19) | 0.033 (2) | 0.055 (2) | −0.0011 (19) | 0.0043 (19) | −0.0034 (18) |
C12 | 0.037 (3) | 0.034 (2) | 0.065 (3) | 0.0043 (18) | 0.018 (2) | 0.000 (2) |
C13 | 0.049 (3) | 0.058 (3) | 0.040 (2) | 0.010 (2) | 0.000 (2) | −0.004 (2) |
C14 | 0.049 (3) | 0.046 (3) | 0.038 (2) | 0.015 (2) | 0.0092 (19) | 0.0030 (19) |
C15 | 0.060 (3) | 0.059 (3) | 0.041 (2) | 0.021 (3) | 0.006 (3) | 0.007 (2) |
C16 | 0.024 (2) | 0.033 (2) | 0.063 (3) | −0.0032 (15) | 0.0017 (18) | 0.0051 (18) |
C17 | 0.030 (2) | 0.032 (2) | 0.051 (2) | −0.0083 (17) | −0.0076 (19) | 0.0090 (17) |
C18 | 0.032 (2) | 0.039 (2) | 0.069 (3) | −0.0074 (19) | −0.008 (2) | −0.007 (2) |
O4 | 0.035 (2) | 0.079 (3) | 0.158 (4) | −0.013 (2) | −0.012 (3) | 0.078 (3) |
N4 | 0.0195 (16) | 0.0394 (18) | 0.044 (2) | 0.0012 (16) | 0.0005 (16) | −0.0069 (15) |
O5 | 0.0343 (18) | 0.0569 (19) | 0.0492 (18) | −0.0012 (15) | −0.0107 (14) | −0.0112 (14) |
O6 | 0.066 (2) | 0.0463 (18) | 0.063 (2) | −0.003 (2) | 0.002 (2) | 0.0054 (16) |
O7 | 0.065 (2) | 0.0386 (18) | 0.069 (2) | 0.0065 (18) | −0.0138 (17) | −0.0132 (15) |
N5 | 0.030 (2) | 0.043 (2) | 0.050 (2) | 0.0103 (17) | 0.0000 (17) | −0.0067 (17) |
O8 | 0.106 (5) | 0.204 (6) | 0.119 (4) | 0.114 (5) | −0.005 (3) | −0.032 (4) |
O9 | 0.099 (3) | 0.074 (3) | 0.068 (2) | −0.049 (2) | −0.020 (2) | 0.013 (2) |
O10 | 0.085 (4) | 0.063 (3) | 0.157 (5) | −0.021 (2) | −0.065 (3) | 0.043 (3) |
Zn1—O1 | 2.091 (3) | C7—H7B | 0.99 |
Zn1—N3 | 2.128 (3) | C8—C9 | 1.512 (7) |
Zn1—O2 | 2.135 (3) | C8—H8A | 0.99 |
Zn1—N2 | 2.174 (3) | C8—H8B | 0.99 |
Zn1—N1 | 2.179 (3) | C9—H9A | 0.99 |
Zn1—O3 | 2.275 (3) | C9—H9B | 0.99 |
O1—C11 | 1.439 (5) | C10—C11 | 1.500 (5) |
O1—H1 | 0.855 (10) | C10—H10A | 0.99 |
O2—C14 | 1.428 (5) | C10—H10B | 0.99 |
O2—H2 | 0.844 (10) | C11—C12 | 1.516 (6) |
O3—C17 | 1.429 (5) | C11—H11 | 1.00 |
O3—H3 | 0.849 (10) | C12—H12A | 0.98 |
N1—C9 | 1.480 (5) | C12—H12B | 0.98 |
N1—C10 | 1.489 (5) | C12—H12C | 0.98 |
N1—C1 | 1.510 (5) | C13—C14 | 1.502 (7) |
N2—C13 | 1.474 (6) | C13—H13A | 0.99 |
N2—C4 | 1.508 (6) | C13—H13B | 0.99 |
N2—C3 | 1.516 (6) | C14—C15 | 1.505 (5) |
N3—C6 | 1.485 (5) | C14—H14 | 1.00 |
N3—C16 | 1.491 (5) | C15—H15A | 0.98 |
N3—C7 | 1.508 (5) | C15—H15B | 0.98 |
C1—C2 | 1.492 (7) | C15—H15C | 0.98 |
C1—H1A | 0.99 | C16—C17 | 1.497 (6) |
C1—H1B | 0.99 | C16—H16A | 0.99 |
C2—C3 | 1.488 (8) | C16—H16B | 0.99 |
C2—H2A | 0.99 | C17—C18 | 1.513 (5) |
C2—H2B | 0.99 | C17—H17 | 1.00 |
C3—H3A | 0.99 | C18—H18A | 0.98 |
C3—H3B | 0.99 | C18—H18B | 0.98 |
C4—C5 | 1.513 (7) | C18—H18C | 0.98 |
C4—H4A | 0.99 | O4—H4C | 0.848 (10) |
C4—H4B | 0.99 | O4—H4D | 0.842 (10) |
C5—C6 | 1.506 (7) | N4—O6 | 1.201 (4) |
C5—H5A | 0.99 | N4—O7 | 1.242 (4) |
C5—H5B | 0.99 | N4—O5 | 1.257 (4) |
C6—H6A | 0.99 | N5—O9 | 1.193 (5) |
C6—H6B | 0.99 | N5—O10 | 1.200 (5) |
C7—C8 | 1.505 (7) | N5—O8 | 1.224 (6) |
C7—H7A | 0.99 | ||
O1—Zn1—N3 | 155.21 (12) | C8—C7—H7A | 108.0 |
O1—Zn1—O2 | 84.28 (11) | N3—C7—H7A | 108.0 |
N3—Zn1—O2 | 98.67 (12) | C8—C7—H7B | 108.0 |
O1—Zn1—N2 | 102.81 (12) | N3—C7—H7B | 108.0 |
N3—Zn1—N2 | 101.87 (14) | H7A—C7—H7B | 107.3 |
O2—Zn1—N2 | 78.08 (13) | C7—C8—C9 | 114.3 (4) |
O1—Zn1—N1 | 77.96 (11) | C7—C8—H8A | 108.7 |
N3—Zn1—N1 | 101.06 (13) | C9—C8—H8A | 108.7 |
O2—Zn1—N1 | 160.27 (12) | C7—C8—H8B | 108.7 |
N2—Zn1—N1 | 97.44 (14) | C9—C8—H8B | 108.7 |
O1—Zn1—O3 | 80.11 (10) | H8A—C8—H8B | 107.6 |
N3—Zn1—O3 | 75.89 (11) | N1—C9—C8 | 114.8 (3) |
O2—Zn1—O3 | 82.88 (10) | N1—C9—H9A | 108.6 |
N2—Zn1—O3 | 160.28 (12) | C8—C9—H9A | 108.6 |
N1—Zn1—O3 | 102.22 (12) | N1—C9—H9B | 108.6 |
C11—O1—Zn1 | 117.3 (2) | C8—C9—H9B | 108.6 |
C11—O1—H1 | 109 (3) | H9A—C9—H9B | 107.5 |
Zn1—O1—H1 | 123 (3) | N1—C10—C11 | 111.9 (3) |
C14—O2—Zn1 | 117.0 (2) | N1—C10—H10A | 109.2 |
C14—O2—H2 | 114 (3) | C11—C10—H10A | 109.2 |
Zn1—O2—H2 | 121 (3) | N1—C10—H10B | 109.2 |
C17—O3—Zn1 | 115.4 (2) | C11—C10—H10B | 109.2 |
C17—O3—H3 | 111 (3) | H10A—C10—H10B | 107.9 |
Zn1—O3—H3 | 124 (3) | O1—C11—C10 | 106.4 (3) |
C9—N1—C10 | 109.4 (3) | O1—C11—C12 | 110.1 (3) |
C9—N1—C1 | 106.5 (3) | C10—C11—C12 | 111.9 (3) |
C10—N1—C1 | 108.3 (3) | O1—C11—H11 | 109.5 |
C9—N1—Zn1 | 113.5 (2) | C10—C11—H11 | 109.5 |
C10—N1—Zn1 | 101.7 (2) | C12—C11—H11 | 109.5 |
C1—N1—Zn1 | 117.1 (3) | C11—C12—H12A | 109.5 |
C13—N2—C4 | 109.8 (4) | C11—C12—H12B | 109.5 |
C13—N2—C3 | 106.4 (4) | H12A—C12—H12B | 109.5 |
C4—N2—C3 | 110.4 (4) | C11—C12—H12C | 109.5 |
C13—N2—Zn1 | 104.1 (2) | H12A—C12—H12C | 109.5 |
C4—N2—Zn1 | 114.7 (3) | H12B—C12—H12C | 109.5 |
C3—N2—Zn1 | 111.0 (3) | N2—C13—C14 | 113.3 (4) |
C6—N3—C16 | 107.6 (3) | N2—C13—H13A | 108.9 |
C6—N3—C7 | 108.1 (3) | C14—C13—H13A | 108.9 |
C16—N3—C7 | 108.9 (3) | N2—C13—H13B | 108.9 |
C6—N3—Zn1 | 111.0 (3) | C14—C13—H13B | 108.9 |
C16—N3—Zn1 | 106.7 (2) | H13A—C13—H13B | 107.7 |
C7—N3—Zn1 | 114.3 (2) | O2—C14—C13 | 104.8 (3) |
C2—C1—N1 | 114.0 (4) | O2—C14—C15 | 111.7 (3) |
C2—C1—H1A | 108.7 | C13—C14—C15 | 111.9 (4) |
N1—C1—H1A | 108.7 | O2—C14—H14 | 109.4 |
C2—C1—H1B | 108.7 | C13—C14—H14 | 109.4 |
N1—C1—H1B | 108.7 | C15—C14—H14 | 109.4 |
H1A—C1—H1B | 107.6 | C14—C15—H15A | 109.5 |
C3—C2—C1 | 112.8 (4) | C14—C15—H15B | 109.5 |
C3—C2—H2A | 109.0 | H15A—C15—H15B | 109.5 |
C1—C2—H2A | 109.0 | C14—C15—H15C | 109.5 |
C3—C2—H2B | 109.0 | H15A—C15—H15C | 109.5 |
C1—C2—H2B | 109.0 | H15B—C15—H15C | 109.5 |
H2A—C2—H2B | 107.8 | N3—C16—C17 | 113.3 (3) |
C2—C3—N2 | 116.7 (4) | N3—C16—H16A | 108.9 |
C2—C3—H3A | 108.1 | C17—C16—H16A | 108.9 |
N2—C3—H3A | 108.1 | N3—C16—H16B | 108.9 |
C2—C3—H3B | 108.1 | C17—C16—H16B | 108.9 |
N2—C3—H3B | 108.1 | H16A—C16—H16B | 107.7 |
H3A—C3—H3B | 107.3 | O3—C17—C16 | 104.9 (3) |
N2—C4—C5 | 117.0 (4) | O3—C17—C18 | 112.2 (3) |
N2—C4—H4A | 108.0 | C16—C17—C18 | 111.0 (4) |
C5—C4—H4A | 108.0 | O3—C17—H17 | 109.6 |
N2—C4—H4B | 108.0 | C16—C17—H17 | 109.6 |
C5—C4—H4B | 108.0 | C18—C17—H17 | 109.6 |
H4A—C4—H4B | 107.3 | C17—C18—H18A | 109.5 |
C6—C5—C4 | 115.3 (4) | C17—C18—H18B | 109.5 |
C6—C5—H5A | 108.5 | H18A—C18—H18B | 109.5 |
C4—C5—H5A | 108.5 | C17—C18—H18C | 109.5 |
C6—C5—H5B | 108.5 | H18A—C18—H18C | 109.5 |
C4—C5—H5B | 108.5 | H18B—C18—H18C | 109.5 |
H5A—C5—H5B | 107.5 | H4C—O4—H4D | 108.6 (18) |
N3—C6—C5 | 113.8 (4) | O6—N4—O7 | 120.6 (3) |
N3—C6—H6A | 108.8 | O6—N4—O5 | 122.2 (3) |
C5—C6—H6A | 108.8 | O7—N4—O5 | 117.2 (3) |
N3—C6—H6B | 108.8 | O9—N5—O10 | 120.6 (4) |
C5—C6—H6B | 108.8 | O9—N5—O8 | 118.4 (5) |
H6A—C6—H6B | 107.7 | O10—N5—O8 | 120.2 (5) |
C8—C7—N3 | 117.1 (3) | ||
N3—Zn1—O1—C11 | 77.9 (4) | N1—Zn1—N3—C16 | 128.7 (3) |
O2—Zn1—O1—C11 | 176.2 (3) | O3—Zn1—N3—C16 | 28.7 (2) |
N2—Zn1—O1—C11 | −107.5 (3) | O1—Zn1—N3—C7 | −77.0 (4) |
N1—Zn1—O1—C11 | −12.5 (3) | O2—Zn1—N3—C7 | −172.1 (3) |
O3—Zn1—O1—C11 | 92.4 (3) | N2—Zn1—N3—C7 | 108.3 (3) |
O1—Zn1—O2—C14 | 104.3 (3) | N1—Zn1—N3—C7 | 8.2 (3) |
N3—Zn1—O2—C14 | −100.6 (3) | O3—Zn1—N3—C7 | −91.8 (3) |
N2—Zn1—O2—C14 | −0.2 (3) | C9—N1—C1—C2 | 86.1 (5) |
N1—Zn1—O2—C14 | 78.5 (5) | C10—N1—C1—C2 | −156.4 (4) |
O3—Zn1—O2—C14 | −175.0 (3) | Zn1—N1—C1—C2 | −42.3 (5) |
O1—Zn1—O3—C17 | −177.9 (3) | N1—C1—C2—C3 | 74.1 (5) |
N3—Zn1—O3—C17 | −4.1 (2) | C1—C2—C3—N2 | −83.4 (5) |
O2—Zn1—O3—C17 | 96.7 (3) | C13—N2—C3—C2 | 165.0 (4) |
N2—Zn1—O3—C17 | 81.7 (4) | C4—N2—C3—C2 | −75.9 (5) |
N1—Zn1—O3—C17 | −102.6 (3) | Zn1—N2—C3—C2 | 52.4 (5) |
O1—Zn1—N1—C9 | 151.3 (3) | C13—N2—C4—C5 | −141.8 (4) |
N3—Zn1—N1—C9 | −3.4 (3) | C3—N2—C4—C5 | 101.2 (5) |
O2—Zn1—N1—C9 | 177.6 (3) | Zn1—N2—C4—C5 | −25.1 (5) |
N2—Zn1—N1—C9 | −107.1 (3) | N2—C4—C5—C6 | 68.2 (6) |
O3—Zn1—N1—C9 | 74.4 (3) | C16—N3—C6—C5 | 167.2 (4) |
O1—Zn1—N1—C10 | 33.9 (2) | C7—N3—C6—C5 | −75.3 (5) |
N3—Zn1—N1—C10 | −120.8 (2) | Zn1—N3—C6—C5 | 50.8 (4) |
O2—Zn1—N1—C10 | 60.2 (5) | C4—C5—C6—N3 | −85.8 (5) |
N2—Zn1—N1—C10 | 135.5 (2) | C6—N3—C7—C8 | 148.8 (4) |
O3—Zn1—N1—C10 | −43.0 (3) | C16—N3—C7—C8 | −94.5 (4) |
O1—Zn1—N1—C1 | −83.8 (3) | Zn1—N3—C7—C8 | 24.7 (5) |
N3—Zn1—N1—C1 | 121.5 (3) | N3—C7—C8—C9 | −74.6 (5) |
O2—Zn1—N1—C1 | −57.6 (5) | C10—N1—C9—C8 | 78.7 (4) |
N2—Zn1—N1—C1 | 17.8 (3) | C1—N1—C9—C8 | −164.5 (4) |
O3—Zn1—N1—C1 | −160.8 (3) | Zn1—N1—C9—C8 | −34.1 (5) |
O1—Zn1—N2—C13 | −55.6 (3) | C7—C8—C9—N1 | 80.5 (5) |
N3—Zn1—N2—C13 | 122.1 (3) | C9—N1—C10—C11 | −174.5 (3) |
O2—Zn1—N2—C13 | 25.6 (3) | C1—N1—C10—C11 | 69.8 (4) |
N1—Zn1—N2—C13 | −134.9 (3) | Zn1—N1—C10—C11 | −54.1 (3) |
O3—Zn1—N2—C13 | 40.8 (5) | Zn1—O1—C11—C10 | −13.1 (4) |
O1—Zn1—N2—C4 | −175.5 (3) | Zn1—O1—C11—C12 | −134.6 (3) |
N3—Zn1—N2—C4 | 2.2 (3) | N1—C10—C11—O1 | 46.0 (4) |
O2—Zn1—N2—C4 | −94.3 (3) | N1—C10—C11—C12 | 166.3 (3) |
N1—Zn1—N2—C4 | 105.2 (3) | C4—N2—C13—C14 | 73.0 (4) |
O3—Zn1—N2—C4 | −79.1 (5) | C3—N2—C13—C14 | −167.5 (4) |
O1—Zn1—N2—C3 | 58.5 (3) | Zn1—N2—C13—C14 | −50.2 (4) |
N3—Zn1—N2—C3 | −123.8 (3) | Zn1—O2—C14—C13 | −24.9 (4) |
O2—Zn1—N2—C3 | 139.7 (3) | Zn1—O2—C14—C15 | −146.3 (3) |
N1—Zn1—N2—C3 | −20.8 (3) | N2—C13—C14—O2 | 50.5 (5) |
O3—Zn1—N2—C3 | 154.9 (3) | N2—C13—C14—C15 | 171.8 (3) |
O1—Zn1—N3—C6 | 160.4 (3) | C6—N3—C16—C17 | −173.2 (3) |
O2—Zn1—N3—C6 | 65.3 (3) | C7—N3—C16—C17 | 69.8 (4) |
N2—Zn1—N3—C6 | −14.2 (3) | Zn1—N3—C16—C17 | −54.0 (4) |
N1—Zn1—N3—C6 | −114.4 (3) | Zn1—O3—C17—C16 | −21.4 (3) |
O3—Zn1—N3—C6 | 145.7 (3) | Zn1—O3—C17—C18 | −142.0 (3) |
O1—Zn1—N3—C16 | 43.5 (4) | N3—C16—C17—O3 | 49.3 (4) |
O2—Zn1—N3—C16 | −51.7 (3) | N3—C16—C17—C18 | 170.7 (3) |
N2—Zn1—N3—C16 | −131.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O10 | 0.86 (1) | 1.80 (1) | 2.652 (5) | 171 (5) |
O2—H2···O4 | 0.84 (1) | 1.80 (2) | 2.624 (5) | 166 (5) |
O3—H3···O6 | 0.85 (1) | 2.06 (2) | 2.853 (4) | 156 (5) |
O3—H3···O7 | 0.85 (1) | 2.54 (3) | 3.199 (4) | 135 (4) |
O4—H4C···O8i | 0.85 (1) | 1.86 (4) | 2.641 (7) | 153 (8) |
O4—H4D···O5ii | 0.84 (1) | 1.86 (2) | 2.689 (5) | 170 (8) |
C9—H9B···O10iii | 0.99 | 2.39 | 3.184 (6) | 137 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1/2, −y, z+1/2; (iii) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Zn(C18H39N3O3)](NO3)2·H2O |
Mr | 552.93 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 100 |
a, b, c (Å) | 10.1558 (10), 15.4883 (15), 15.7498 (15) |
V (Å3) | 2477.4 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.05 |
Crystal size (mm) | 0.16 × 0.15 × 0.11 |
Data collection | |
Diffractometer | Bruker APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.497, 0.890 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14715, 5102, 4378 |
Rint | 0.042 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.113, 1.05 |
No. of reflections | 5102 |
No. of parameters | 325 |
No. of restraints | 6 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.83, −0.47 |
Absolute structure | Flack (1983), 2219 Friedel pairs |
Absolute structure parameter | −0.003 (15) |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Atwood & Barbour, 2003; Barbour, 2001).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O10 | 0.86 (1) | 1.80 (1) | 2.652 (5) | 171 (5) |
O2—H2···O4 | 0.84 (1) | 1.80 (2) | 2.624 (5) | 166 (5) |
O3—H3···O6 | 0.85 (1) | 2.06 (2) | 2.853 (4) | 156 (5) |
O3—H3···O7 | 0.85 (1) | 2.54 (3) | 3.199 (4) | 135 (4) |
O4—H4C···O8i | 0.85 (1) | 1.86 (4) | 2.641 (7) | 153 (8) |
O4—H4D···O5ii | 0.84 (1) | 1.86 (2) | 2.689 (5) | 170 (8) |
C9—H9B···O10iii | 0.99 | 2.39 | 3.184 (6) | 137 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1/2, −y, z+1/2; (iii) −x+1, y+1/2, −z+1/2. |
Acknowledgements
The authors thank the National Research Foundation (NRF) of South Africa for financial support and Dr Catharine Esterhuysen for useful comments.
References
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Azamacrocycles and some of their N-substituted derivatives are of synthetic interest due to their unique binding properties with metal ions. The addition of different pendant arms can enhance the selectivity of the azamacrocycle for a metal cation, depending on the cavity size and on the nature of the substitutents (Skerlj et al., 2002). The design and synthesis of polyazamacrocycles bearing flexible pendant arms from the cyclic framework provides chemists with an opportunity to design macrocycles tailored for a specific function. This is especially the case because the pendant arms provide additional coordination sites for metal ions.
Functionalised macrocycles have been successfully employed in the synthesis of metal-chelating agents for medical applications owing to the kinetic inertness of the complexes which makes them resistant to decomplexation (Sheng et al., 2007).
In the title compound (Fig. 1), the ZnII atom is octahedrally coordinated. Small distortions cause the N—Zn—N angles to exceed 90° while the O—Zn—O angles measure less than 90°. The dicationic complex exhibits near C3-symmetry with exception of the propylene groups in which the central CH2 group adopts a different conformation in each sector.
The three hydroxyl groups are all engaged in hydrogen bonds. The O1—H1 and O3—H3 groups form hydrogen bonds (Table 1) with the two asymmetric nitrate counter anions and the O2—H2 group with the water molecule. This water molecule itself forms two hydrogen bonds with two other complexes. The hydrogen bonding results in the formation of two-dimensional corrugated sheets parallel to the ac plane. Three adjacent complex units are linked to form 34-membered rings which include ten hydrogen bonds (Fig. 2). Neighbouring sheets are loosely connected by C—H···O interactions involving one of the CH2 groups of the triazacyclododecane.
The configuration at C11, C14 and C17 is (S), resulting from utilisation of enantiopure (S)-methyloxirane in the synthetic process which is supported by anomalous scattering.