organic compounds
10,21-Dimethyl-2,7,13,18-tetraphenyl-3,6,14,17-tetraazatricyclo[17.3.1.18,12]tetracosa-1(23),2,6,8(24),9,11,13,17,19,21-decaene-23,24-diol cyclohexane 0.33-solvate
aDepartment of Chemistry, Dish Institute of Management and Technology, Raipur 492101(C.G.), India, bDirectorate of ER & IPR, Defence Research and Development Organisation, New Delhi 110105, India, cSchool of Studies in Chemistry, Jiwaji University, Gwalior 474011, India, and dDepartment of Chemistry, Howard University, Washington DC 20059, USA
*Correspondence e-mail: rbutcher@howard.edu
The title compound, C46H40N4O2·0.33C6H12, was obtained unintentionally as a product of an attempted synthesis of a cadmium(II) complex of the [2,6-{PhSe(CH2)2N=CPh}2C6H2(4-Me)(OH)] ligand. The full tetraiminodiphenol macrocyclic ligand is generated by the application of an inversion centre. The macrocyclic ligand features strong intramolecular O—H⋯N hydrogen bonds. The dihedral angles formed between the phenyl ring incorporated within the macrocycle and the peripheral phenyl rings are 82.99 (8) and 88.20 (8)°. The cyclohexane solvent molecule lies about a site of symmetry. Other solvent within the lattice was disordered and was treated with the SQUEEZE routine [Spek (2009). Acta Cryst. D65, 148–155].
Related literature
For information on phenol-based Schiff base ligands, complexes and their applications, see: Vigato et al. (2007); Fenton et al. (2010); Avaji et al. (2009); Na et al. (2006); Dutta et al. (2004); Mandal et al. (1989); Gupta et al. (2002, 2010).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536811036622/tk2788sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811036622/tk2788Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811036622/tk2788Isup3.cml
A methanolic solution of ethylenediamine (0.13 ml, 1.94 mmol) was added drop wise to a suspension of CdCl2.H2O (0.194 g, 0.97 mmol) in methanol and stirred for 5 min. A methanolic solution of [2,6-{PhSe(CH2)2N═ CPh}2C6H2(4-Me)(OH)] (0.66 g, 0.97 mmol) was added drop wise to the above reaction mixture with constant stirring under Ar atmosphere. The reaction was carried out at room temperature while stirring vigorously. After stirring the reaction mixture for 12 h, the precipitate thus obtained was filtered, dried under vacuum and isolated as the mixture of solid compounds. The macrocycle from the mixture was separated by dissolving it in warm chloroform. Crystals suitable were grown by slow evaporation of its solution in chloroform-cyclohexane mixture (9:1 v/v), giving rise to yellow regular cubic crystals in 45% yield. Anal. Calcd. for C48H44N4O2: C, 81.30; H, 6.21; N, 7.90%. Found: C, 81.61; H, 6.41; N, 8.02.
C-bound H atoms were located at their idealized positions and were included in the final structural model in riding-motion approximation with d(C—H) = 0.93 Å for aromatic CH, 0.97 Å for CH2 groups, 0.96 Å for CH3 groups, and d(O—H) = 0.82 Å, and with Uiso(H) = 1.2Ueq(C) or Uiso(H) = 1.5Ueq(methyl-C and O). The structure contained disordered solvent molecules located near symmetry elements. These were not able to be resolved and so were removed using the SQUEEZE routine in PLATON (Spek, 2009).
Schiff bases have played an important role in the development of coordination chemistry related to catalysis and enzymatic reactions, magnetism and supramolecular architectures (Vigato et al., 2007; Fenton et al., 2010; Avaji et al., 2009; Na et al., 2006; Dutta et al., 2004; Mandal et al., 1989). Very recently we have reported a dinuclear copper (II) complex with a neutral tetraiminodiphenol macrocycle with a C2 lateral chain (Gupta et al., 2010). We herein report the synthesis and 3 symmetry and thus only one atom is unique and a chair conformation is imposed.
of its Schiff base ligand, Fig. 1. The phenolic hydrogen forms an intramolecular hydrogen bond with N1 of the imino group, Table 1. The C1—O1 bond [1.342 (2) Å] appears to be shorter than the equivalent bond in the related structure, (PhCO)2C6H2(OH)(4-Me) [1.360 (4) Å] (Gupta et al., 2002). The imino groups are coplanar with the phenyl ring to which they are attached. The dihedral angles between the phenyl moiety which is part of the macrocycle and the peripheral phenyl rings are 82.99 (8) and 88.20 (8) °. The crystals contain cyclohexane solvent molecules which lie on a site ofFor information on phenol-based Schiff base ligands, complexes and their applications, see: Vigato et al. (2007); Fenton et al. (2010); Avaji et al. (2009); Na et al. (2006); Dutta et al. (2004); Mandal et al. (1989); Gupta et al. (2002, 2010).
Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell
CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound with atom numbering scheme. Displacement ellipsoids are drawn at 30% probability level. The cyclohexane ring has 3 symmetry. |
3C46H40N4O2·C6H12 | F(000) = 3384 |
Mr = 2126.62 | Dx = 0.967 Mg m−3 |
Rhombohedral, R3 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -R 3 | Cell parameters from 3689 reflections |
a = 28.0966 (2) Å | θ = 4.2–77.4° |
c = 16.0265 (2) Å | µ = 0.06 mm−1 |
α = 90° | T = 295 K |
γ = 120° | Block, yellow |
V = 10956.6 (2) Å3 | 0.44 × 0.41 × 0.32 mm |
Z = 3 |
Oxford Diffraction Gemini R diffractometer | 5016 independent reflections |
Radiation source: fine-focus sealed tube | 3022 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.020 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 26.8°, θmin = 2.1° |
φ and ω scans | h = −34→33 |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2009) | k = −35→31 |
Tmin = 0.173, Tmax = 1.000 | l = −17→19 |
10270 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) = 0.222 | H-atom parameters constrained |
S = 0.93 | w = 1/[σ2(Fo2) + (0.1584P)2] where P = (Fo2 + 2Fc2)/3 |
5016 reflections | (Δ/σ)max < 0.001 |
246 parameters | Δρmax = 0.85 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
3C46H40N4O2·C6H12 | V = 10956.6 (2) Å3 |
Mr = 2126.62 | Z = 3 |
Rhombohedral, R3 | Mo Kα radiation |
a = 28.0966 (2) Å | µ = 0.06 mm−1 |
c = 16.0265 (2) Å | T = 295 K |
α = 90° | 0.44 × 0.41 × 0.32 mm |
γ = 120° |
Oxford Diffraction Gemini R diffractometer | 5016 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2009) | 3022 reflections with I > 2σ(I) |
Tmin = 0.173, Tmax = 1.000 | Rint = 0.020 |
10270 measured reflections |
R[F2 > 2σ(F2)] = 0.063 | 0 restraints |
wR(F2) = 0.222 | H-atom parameters constrained |
S = 0.93 | Δρmax = 0.85 e Å−3 |
5016 reflections | Δρmin = −0.27 e Å−3 |
246 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 | ||
O1 | 0.00757 (6) | 0.45286 (6) | 0.94763 (8) | 0.0730 (4) | |
H1O | −0.0035 | 0.4423 | 0.9952 | 0.088* | |
N1A | 0.01498 (8) | 0.43270 (7) | 1.09956 (10) | 0.0711 (4) | |
N1B | 0.04471 (7) | 0.53952 (7) | 0.76712 (10) | 0.0743 (5) | |
C1 | 0.06233 (8) | 0.48575 (8) | 0.94867 (12) | 0.0624 (4) | |
C2 | 0.09343 (8) | 0.49450 (8) | 1.02149 (12) | 0.0645 (5) | |
C3 | 0.15063 (9) | 0.52866 (9) | 1.01686 (13) | 0.0724 (5) | |
H3A | 0.1714 | 0.5343 | 1.0648 | 0.087* | |
C4 | 0.17723 (9) | 0.55424 (9) | 0.94371 (14) | 0.0757 (5) | |
C5 | 0.14523 (9) | 0.54553 (9) | 0.87394 (13) | 0.0752 (5) | |
H5A | 0.1624 | 0.5629 | 0.8244 | 0.090* | |
C6 | 0.08866 (8) | 0.51206 (8) | 0.87453 (12) | 0.0669 (5) | |
C7 | 0.23917 (11) | 0.59108 (13) | 0.9403 (2) | 0.1046 (9) | |
H7A | 0.2548 | 0.5740 | 0.9068 | 0.157* | |
H7B | 0.2539 | 0.5968 | 0.9958 | 0.157* | |
H7C | 0.2480 | 0.6258 | 0.9161 | 0.157* | |
C1A | −0.01466 (10) | 0.40063 (10) | 1.17263 (14) | 0.0781 (6) | |
H1AA | 0.0100 | 0.4121 | 1.2202 | 0.094* | |
H1AB | −0.0275 | 0.3620 | 1.1624 | 0.094* | |
C2A | 0.06650 (9) | 0.46672 (8) | 1.10066 (12) | 0.0663 (5) | |
C3A | 0.10126 (9) | 0.48103 (9) | 1.17789 (12) | 0.0694 (5) | |
C4A | 0.11904 (9) | 0.44689 (10) | 1.20864 (14) | 0.0775 (6) | |
H4AA | 0.1107 | 0.4147 | 1.1806 | 0.093* | |
C5A | 0.14966 (11) | 0.46100 (12) | 1.28222 (16) | 0.0909 (7) | |
H5AA | 0.1621 | 0.4382 | 1.3030 | 0.109* | |
C6A | 0.16148 (12) | 0.50778 (13) | 1.32378 (18) | 0.0991 (8) | |
H6AA | 0.1817 | 0.5168 | 1.3730 | 0.119* | |
C7A | 0.14353 (14) | 0.54175 (13) | 1.29287 (19) | 0.1052 (9) | |
H7AA | 0.1517 | 0.5738 | 1.3214 | 0.126* | |
C8A | 0.11359 (12) | 0.52882 (11) | 1.22012 (15) | 0.0878 (7) | |
H8AA | 0.1017 | 0.5521 | 1.1995 | 0.105* | |
C1B | 0.06337 (9) | 0.59170 (9) | 0.80786 (13) | 0.0762 (6) | |
H1BA | 0.0890 | 0.6212 | 0.7719 | 0.091* | |
H1BB | 0.0824 | 0.5931 | 0.8591 | 0.091* | |
C2B | 0.05487 (8) | 0.50364 (8) | 0.79799 (12) | 0.0689 (5) | |
C3B | 0.03317 (10) | 0.45037 (9) | 0.75241 (13) | 0.0770 (6) | |
C4B | −0.00983 (11) | 0.43386 (12) | 0.69686 (16) | 0.0958 (8) | |
H4BA | −0.0262 | 0.4553 | 0.6892 | 0.115* | |
C5B | −0.02877 (14) | 0.38494 (14) | 0.6522 (2) | 0.1131 (10) | |
H5BA | −0.0584 | 0.3736 | 0.6161 | 0.136* | |
C6B | −0.00516 (16) | 0.35455 (13) | 0.6604 (2) | 0.1179 (12) | |
H6BA | −0.0172 | 0.3230 | 0.6283 | 0.141* | |
C7B | 0.03724 (17) | 0.36951 (12) | 0.7163 (2) | 0.1160 (11) | |
H7BA | 0.0533 | 0.3477 | 0.7229 | 0.139* | |
C8B | 0.05599 (13) | 0.41755 (11) | 0.76307 (17) | 0.0957 (8) | |
H8BA | 0.0841 | 0.4274 | 0.8016 | 0.115* | |
C1S | 0.2722 (4) | 0.6162 (8) | 1.1813 (4) | 0.244 (6) | |
H1SA | 0.2686 | 0.6132 | 1.2416 | 0.293* | |
H1SB | 0.2379 | 0.5879 | 1.1573 | 0.293* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0741 (8) | 0.0811 (9) | 0.0525 (7) | 0.0303 (7) | 0.0009 (6) | 0.0076 (6) |
N1A | 0.0838 (11) | 0.0741 (10) | 0.0554 (9) | 0.0395 (9) | 0.0047 (8) | 0.0089 (7) |
N1B | 0.0852 (11) | 0.0795 (10) | 0.0536 (9) | 0.0378 (9) | 0.0032 (8) | 0.0041 (7) |
C1 | 0.0697 (11) | 0.0624 (9) | 0.0551 (10) | 0.0330 (9) | 0.0014 (8) | 0.0006 (7) |
C2 | 0.0766 (11) | 0.0649 (10) | 0.0563 (10) | 0.0387 (9) | 0.0002 (8) | 0.0008 (8) |
C3 | 0.0747 (12) | 0.0779 (12) | 0.0679 (12) | 0.0407 (10) | −0.0049 (9) | −0.0011 (9) |
C4 | 0.0710 (12) | 0.0788 (12) | 0.0751 (13) | 0.0358 (10) | 0.0028 (10) | 0.0010 (10) |
C5 | 0.0795 (13) | 0.0786 (12) | 0.0645 (12) | 0.0372 (10) | 0.0110 (9) | 0.0067 (10) |
C6 | 0.0750 (11) | 0.0684 (10) | 0.0557 (10) | 0.0347 (9) | 0.0045 (8) | 0.0023 (8) |
C7 | 0.0771 (15) | 0.119 (2) | 0.1015 (19) | 0.0369 (14) | 0.0056 (13) | 0.0134 (16) |
C1A | 0.0922 (14) | 0.0802 (13) | 0.0623 (12) | 0.0433 (11) | 0.0065 (10) | 0.0161 (9) |
C2A | 0.0833 (13) | 0.0694 (11) | 0.0554 (10) | 0.0452 (10) | −0.0006 (8) | 0.0010 (8) |
C3A | 0.0833 (12) | 0.0795 (12) | 0.0524 (9) | 0.0460 (10) | 0.0008 (8) | 0.0044 (8) |
C4A | 0.0883 (14) | 0.0843 (13) | 0.0722 (13) | 0.0523 (12) | −0.0018 (10) | 0.0034 (10) |
C5A | 0.0928 (15) | 0.1126 (19) | 0.0818 (15) | 0.0622 (14) | −0.0079 (12) | 0.0121 (14) |
C6A | 0.1021 (18) | 0.120 (2) | 0.0752 (15) | 0.0557 (17) | −0.0221 (13) | −0.0040 (14) |
C7A | 0.133 (2) | 0.1024 (18) | 0.0819 (16) | 0.0597 (18) | −0.0228 (16) | −0.0222 (14) |
C8A | 0.1165 (18) | 0.0890 (15) | 0.0726 (13) | 0.0622 (14) | −0.0160 (13) | −0.0088 (11) |
C1B | 0.0842 (13) | 0.0747 (12) | 0.0632 (11) | 0.0349 (10) | 0.0047 (10) | 0.0084 (9) |
C2B | 0.0748 (11) | 0.0757 (11) | 0.0480 (9) | 0.0315 (9) | 0.0094 (8) | 0.0048 (8) |
C3B | 0.0891 (14) | 0.0745 (12) | 0.0540 (10) | 0.0309 (11) | 0.0141 (9) | 0.0006 (9) |
C4B | 0.0947 (16) | 0.1020 (17) | 0.0703 (14) | 0.0340 (14) | 0.0022 (12) | −0.0152 (12) |
C5B | 0.107 (2) | 0.109 (2) | 0.0857 (18) | 0.0260 (17) | 0.0073 (15) | −0.0288 (16) |
C6B | 0.124 (2) | 0.0865 (18) | 0.098 (2) | 0.0187 (17) | 0.0379 (19) | −0.0227 (15) |
C7B | 0.156 (3) | 0.0860 (17) | 0.099 (2) | 0.0557 (19) | 0.036 (2) | 0.0008 (15) |
C8B | 0.125 (2) | 0.0843 (15) | 0.0737 (15) | 0.0490 (15) | 0.0074 (14) | −0.0013 (12) |
C1S | 0.195 (7) | 0.318 (16) | 0.099 (4) | 0.037 (6) | −0.012 (4) | −0.054 (8) |
O1—C1 | 1.342 (2) | C4A—H4AA | 0.9300 |
O1—H1O | 0.8200 | C5A—C6A | 1.358 (4) |
N1A—C2A | 1.275 (3) | C5A—H5AA | 0.9300 |
N1A—C1A | 1.458 (2) | C6A—C7A | 1.375 (4) |
N1B—C2B | 1.277 (3) | C6A—H6AA | 0.9300 |
N1B—C1B | 1.443 (3) | C7A—C8A | 1.376 (4) |
C1—C6 | 1.400 (3) | C7A—H7AA | 0.9300 |
C1—C2 | 1.404 (3) | C8A—H8AA | 0.9300 |
C2—C3 | 1.402 (3) | C1B—C1Ai | 1.521 (3) |
C2—C2A | 1.484 (3) | C1B—H1BA | 0.9700 |
C3—C4 | 1.383 (3) | C1B—H1BB | 0.9700 |
C3—H3A | 0.9300 | C2B—C3B | 1.494 (3) |
C4—C5 | 1.378 (3) | C3B—C8B | 1.372 (4) |
C4—C7 | 1.517 (3) | C3B—C4B | 1.381 (4) |
C5—C6 | 1.384 (3) | C4B—C5B | 1.398 (4) |
C5—H5A | 0.9300 | C4B—H4BA | 0.9300 |
C6—C2B | 1.496 (3) | C5B—C6B | 1.324 (5) |
C7—H7A | 0.9600 | C5B—H5BA | 0.9300 |
C7—H7B | 0.9600 | C6B—C7B | 1.378 (5) |
C7—H7C | 0.9600 | C6B—H6BA | 0.9300 |
C1A—C1Bi | 1.520 (3) | C7B—C8B | 1.396 (4) |
C1A—H1AA | 0.9700 | C7B—H7BA | 0.9300 |
C1A—H1AB | 0.9700 | C8B—H8BA | 0.9300 |
C2A—C3A | 1.502 (3) | C1S—C1Sii | 1.657 (7) |
C3A—C4A | 1.375 (3) | C1S—C1Siii | 1.658 (7) |
C3A—C8A | 1.384 (3) | C1S—H1SA | 0.9700 |
C4A—C5A | 1.395 (3) | C1S—H1SB | 0.9700 |
C1—O1—H1O | 109.5 | C4A—C5A—H5AA | 119.8 |
C2A—N1A—C1A | 122.38 (18) | C5A—C6A—C7A | 119.9 (2) |
C2B—N1B—C1B | 121.06 (18) | C5A—C6A—H6AA | 120.1 |
O1—C1—C6 | 118.32 (17) | C7A—C6A—H6AA | 120.1 |
O1—C1—C2 | 122.01 (17) | C6A—C7A—C8A | 120.7 (3) |
C6—C1—C2 | 119.67 (18) | C6A—C7A—H7AA | 119.7 |
C3—C2—C1 | 118.41 (18) | C8A—C7A—H7AA | 119.7 |
C3—C2—C2A | 120.92 (18) | C7A—C8A—C3A | 119.6 (2) |
C1—C2—C2A | 120.65 (18) | C7A—C8A—H8AA | 120.2 |
C4—C3—C2 | 122.5 (2) | C3A—C8A—H8AA | 120.2 |
C4—C3—H3A | 118.8 | N1B—C1B—C1Ai | 109.98 (19) |
C2—C3—H3A | 118.8 | N1B—C1B—H1BA | 109.7 |
C5—C4—C3 | 117.41 (19) | C1Ai—C1B—H1BA | 109.7 |
C5—C4—C7 | 121.1 (2) | N1B—C1B—H1BB | 109.7 |
C3—C4—C7 | 121.5 (2) | C1Ai—C1B—H1BB | 109.7 |
C4—C5—C6 | 122.7 (2) | H1BA—C1B—H1BB | 108.2 |
C4—C5—H5A | 118.6 | N1B—C2B—C3B | 117.44 (19) |
C6—C5—H5A | 118.6 | N1B—C2B—C6 | 124.58 (19) |
C5—C6—C1 | 119.25 (19) | C3B—C2B—C6 | 117.94 (19) |
C5—C6—C2B | 121.62 (18) | C8B—C3B—C4B | 118.6 (2) |
C1—C6—C2B | 119.13 (17) | C8B—C3B—C2B | 121.2 (2) |
C4—C7—H7A | 109.5 | C4B—C3B—C2B | 120.1 (2) |
C4—C7—H7B | 109.5 | C3B—C4B—C5B | 120.0 (3) |
H7A—C7—H7B | 109.5 | C3B—C4B—H4BA | 120.0 |
C4—C7—H7C | 109.5 | C5B—C4B—H4BA | 120.0 |
H7A—C7—H7C | 109.5 | C6B—C5B—C4B | 121.1 (3) |
H7B—C7—H7C | 109.5 | C6B—C5B—H5BA | 119.5 |
N1A—C1A—C1Bi | 110.73 (17) | C4B—C5B—H5BA | 119.5 |
N1A—C1A—H1AA | 109.5 | C5B—C6B—C7B | 120.2 (3) |
C1Bi—C1A—H1AA | 109.5 | C5B—C6B—H6BA | 119.9 |
N1A—C1A—H1AB | 109.5 | C7B—C6B—H6BA | 119.9 |
C1Bi—C1A—H1AB | 109.5 | C6B—C7B—C8B | 119.6 (3) |
H1AA—C1A—H1AB | 108.1 | C6B—C7B—H7BA | 120.2 |
N1A—C2A—C2 | 118.15 (18) | C8B—C7B—H7BA | 120.2 |
N1A—C2A—C3A | 123.70 (18) | C3B—C8B—C7B | 120.4 (3) |
C2—C2A—C3A | 118.15 (18) | C3B—C8B—H8BA | 119.8 |
C4A—C3A—C8A | 119.9 (2) | C7B—C8B—H8BA | 119.8 |
C4A—C3A—C2A | 121.5 (2) | C1Sii—C1S—C1Siii | 112.3 (4) |
C8A—C3A—C2A | 118.47 (18) | C1Sii—C1S—H1SA | 109.1 |
C3A—C4A—C5A | 119.5 (2) | C1Siii—C1S—H1SA | 109.1 |
C3A—C4A—H4AA | 120.3 | C1Sii—C1S—H1SB | 109.1 |
C5A—C4A—H4AA | 120.3 | C1Siii—C1S—H1SB | 109.1 |
C6A—C5A—C4A | 120.5 (2) | H1SA—C1S—H1SB | 107.9 |
C6A—C5A—H5AA | 119.8 | ||
O1—C1—C2—C3 | 178.78 (18) | C8A—C3A—C4A—C5A | −0.3 (4) |
C6—C1—C2—C3 | −1.5 (3) | C2A—C3A—C4A—C5A | −177.8 (2) |
O1—C1—C2—C2A | 0.8 (3) | C3A—C4A—C5A—C6A | 0.6 (4) |
C6—C1—C2—C2A | −179.53 (17) | C4A—C5A—C6A—C7A | −0.5 (4) |
C1—C2—C3—C4 | 0.6 (3) | C5A—C6A—C7A—C8A | 0.1 (5) |
C2A—C2—C3—C4 | 178.54 (19) | C6A—C7A—C8A—C3A | 0.3 (5) |
C2—C3—C4—C5 | 0.7 (3) | C4A—C3A—C8A—C7A | −0.2 (4) |
C2—C3—C4—C7 | 179.9 (2) | C2A—C3A—C8A—C7A | 177.4 (2) |
C3—C4—C5—C6 | −1.0 (3) | C2B—N1B—C1B—C1Ai | −122.1 (2) |
C7—C4—C5—C6 | 179.8 (2) | C1B—N1B—C2B—C3B | 178.98 (18) |
C4—C5—C6—C1 | 0.0 (3) | C1B—N1B—C2B—C6 | −3.4 (3) |
C4—C5—C6—C2B | 179.6 (2) | C5—C6—C2B—N1B | −73.2 (3) |
O1—C1—C6—C5 | −179.04 (18) | C1—C6—C2B—N1B | 106.3 (2) |
C2—C1—C6—C5 | 1.3 (3) | C5—C6—C2B—C3B | 104.3 (2) |
O1—C1—C6—C2B | 1.4 (3) | C1—C6—C2B—C3B | −76.1 (2) |
C2—C1—C6—C2B | −178.29 (18) | N1B—C2B—C3B—C8B | 158.1 (2) |
C2A—N1A—C1A—C1Bi | 126.2 (2) | C6—C2B—C3B—C8B | −19.6 (3) |
C1A—N1A—C2A—C2 | 175.90 (17) | N1B—C2B—C3B—C4B | −20.4 (3) |
C1A—N1A—C2A—C3A | −5.3 (3) | C6—C2B—C3B—C4B | 161.9 (2) |
C3—C2—C2A—N1A | −174.41 (18) | C8B—C3B—C4B—C5B | −0.8 (4) |
C1—C2—C2A—N1A | 3.5 (3) | C2B—C3B—C4B—C5B | 177.8 (2) |
C3—C2—C2A—C3A | 6.7 (3) | C3B—C4B—C5B—C6B | −1.9 (4) |
C1—C2—C2A—C3A | −175.39 (17) | C4B—C5B—C6B—C7B | 2.9 (5) |
N1A—C2A—C3A—C4A | 78.9 (3) | C5B—C6B—C7B—C8B | −1.4 (5) |
C2—C2A—C3A—C4A | −102.2 (2) | C4B—C3B—C8B—C7B | 2.3 (4) |
N1A—C2A—C3A—C8A | −98.6 (3) | C2B—C3B—C8B—C7B | −176.3 (2) |
C2—C2A—C3A—C8A | 80.2 (3) | C6B—C7B—C8B—C3B | −1.3 (4) |
Symmetry codes: (i) −x, −y+1, −z+2; (ii) x−y+2/3, x+1/3, −z+7/3; (iii) y−1/3, −x+y+1/3, −z+7/3. |
Experimental details
Crystal data | |
Chemical formula | 3C46H40N4O2·C6H12 |
Mr | 2126.62 |
Crystal system, space group | Rhombohedral, R3 |
Temperature (K) | 295 |
a, c (Å) | 28.0966 (2), 16.0265 (2) |
V (Å3) | 10956.6 (2) |
Z | 3 |
Radiation type | Mo Kα |
µ (mm−1) | 0.06 |
Crystal size (mm) | 0.44 × 0.41 × 0.32 |
Data collection | |
Diffractometer | Oxford Diffraction Gemini R |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2009) |
Tmin, Tmax | 0.173, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10270, 5016, 3022 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.633 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.063, 0.222, 0.93 |
No. of reflections | 5016 |
No. of parameters | 246 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.85, −0.27 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2009), CrysAlis RED (Oxford Diffraction, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009), SHELXTL (Sheldrick, 2008).
Acknowledgements
RJB wishes to acknowledge the NSF–MRI program (grant CHE-0619278) for funds to purchase the diffractometer. The authors are grateful to Defence Research and Development Organization (DRDO), New Delhi, for financial assistance and for the award of a fellowship to AKA. They thank Professor B. L. Khandelwal, DIMAT, Raipur, for helpful discussions.
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.
Schiff bases have played an important role in the development of coordination chemistry related to catalysis and enzymatic reactions, magnetism and supramolecular architectures (Vigato et al., 2007; Fenton et al., 2010; Avaji et al., 2009; Na et al., 2006; Dutta et al., 2004; Mandal et al., 1989). Very recently we have reported a dinuclear copper (II) complex with a neutral tetraiminodiphenol macrocycle with a C2 lateral chain (Gupta et al., 2010). We herein report the synthesis and crystal structure of its Schiff base ligand, Fig. 1. The phenolic hydrogen forms an intramolecular hydrogen bond with N1 of the imino group, Table 1. The C1—O1 bond [1.342 (2) Å] appears to be shorter than the equivalent bond in the related structure, (PhCO)2C6H2(OH)(4-Me) [1.360 (4) Å] (Gupta et al., 2002). The imino groups are coplanar with the phenyl ring to which they are attached. The dihedral angles between the phenyl moiety which is part of the macrocycle and the peripheral phenyl rings are 82.99 (8) and 88.20 (8) °. The crystals contain cyclohexane solvent molecules which lie on a site of 3 symmetry and thus only one atom is unique and a chair conformation is imposed.