metal-organic compounds
{2-[Bis(3-methyl-1H-indol-2-yl)methyl]phenolato-κO}dimethyl(tetrahydrofuran-κO)aluminium(III)
aDepartments of Chemistry & Biochemistry, Kenyon College, Gambier, OH 43214-9623, USA, and bDepartment of Chemistry, Vassar College, 124 Raymond Ave., Box 406, Poughkeepsie, NY 12604-0744, USA
*Correspondence e-mail: getzlery@kenyon.edu
The title compound, [Al(CH3)2(C25H21N2O)(C4H8O)], was isolated as a minor component from a reaction mixture of the parent indolyl ligand and trimethylaluminum in tetrahydrofuran. The ligands adopt a distorted tetrahedral geometry around aluminium. Obvious hydrogen-bonding interactions are not present.
Related literature
For general background to (indolyl)methanes, see, see: Mason (2003); Mason et al. (2003). For related structures, see: Ziemkowska et al. (2007); Haddad et al. (2009). For patterns in hydrogen bonding, see: Steiner (2002).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: enCIFer (Allen et al., 2004).
Supporting information
https://doi.org/10.1107/S1600536809040598/pk2190sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809040598/pk2190Isup2.hkl
The ligand was synthesized by mixing two equivalents of 3-methylindole with one equivalent of salicylaldehyde in EtOH in the presence of an acid catalyst. The product was isolated by vacuum filtration (66.6%; mp 230–240 °C (dec.)); 1H NMR (300 MHz, DMSO-d6), 2.01 (6H, s), 6.22 (1H, s), 6.76 (1H, dt, J=1.2 H, 8.5 Hz), 6.85 (1H, d, J=5.4 Hz), 6.91–7.03 (4H, m), 7.08 (2H, d, J=7.4 Hz), 7.30 (2H, d, J=7.2 H), 7.4 (2H, d, J=6.9 H), 9.58 (1H, s), 10.31 (2H, s); 13C NMR (75 MHz, DMSO-d6) 8.34, 34.79, 105.93, 111.07, 115.07, 117.57, 18.09, 119.06, 120.26, 127.22, 127.74, 128.85, 129.57, 134.72, 135.36, 154.69.
Using standard Schlenk techniques, the free ligand was dissolved in THF and AlMe3 (2.0 M in heptane, 1 equivalent) was added dropwise via syringe. Upon reaction completion, solvent was removed under high vacuum and the residue was dissolved in a minimum of hot toluene. Upon sitting, a few small, colorless crystals appeared.
Hydrogen atoms on carbon were added geometrically and refined using a riding model, whereas hydrogen atoms on nitrogen were located in the difference map and refined semi-freely with the help of a distance restraint. Uiso values for hydrogen atoms were assigned to be 1.20 times the Ueq value of the atom to which they are attached, except for hydrogen atoms on methyl carbon atoms, which were assigned a Uiso of 1.50 times the Ueq of the methyl carbon atom to which they are attached.
The molecule of the title complex (Fig. 1), has a distorted tetrahedral coordination geometry around aluminum with X—Al—X (X = C, O) angles ranging from 99.26 (5)° to 121.34 (8)°. The phenoxy(bisindolyl)methane ligand is coordinated to aluminum through a deprotonated phenol oxygen that is bent well out of the ideal sp3 to 140.50 (8)°, consistent with significant π-donation to Al(III) from the phenoxide O. In the (Fig. 2), weak intramolecular N—H···N interactions may stabilize the ligand conformations while weak intermolecular N—H···N interactions may stabilize crystal packing. The distances of these contacts [2.703 (15) Å and 2.734 (14) Å, respectively] are quite long (Steiner, 2002). However, they are slightly less then the sum of the relevant Van der Waals radii.
For general background to (indolyl)methanes see, see: Mason (2003); Mason et al. (2003). For related structures, see: Ziemkowska et al. (2007); Haddad et al. (2009). For patterns in hydrogen bonding, see: Steiner (2002).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: enCIFer (Allen et al., 2004).[Al(CH3)2(C25H21N2O)(C4H8O)] | F(000) = 1056 |
Mr = 494.59 | Dx = 1.216 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 6863 reflections |
a = 11.2045 (1) Å | θ = 2.6–31.6° |
b = 19.4191 (3) Å | µ = 0.11 mm−1 |
c = 12.5543 (2) Å | T = 115 K |
β = 98.537 (1)° | Block, colorless |
V = 2701.32 (6) Å3 | 0.30 × 0.25 × 0.20 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 9864 independent reflections |
Radiation source: fine-focus sealed tube | 7340 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
φ and ω scans | θmax = 32.7°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | h = −16→16 |
Tmin = 0.969, Tmax = 0.979 | k = −29→29 |
55902 measured reflections | l = −18→19 |
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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.146 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0719P)2 + 0.8449P] where P = (Fo2 + 2Fc2)/3 |
9864 reflections | (Δ/σ)max = 0.003 |
335 parameters | Δρmax = 0.50 e Å−3 |
2 restraints | Δρmin = −0.33 e Å−3 |
[Al(CH3)2(C25H21N2O)(C4H8O)] | V = 2701.32 (6) Å3 |
Mr = 494.59 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.2045 (1) Å | µ = 0.11 mm−1 |
b = 19.4191 (3) Å | T = 115 K |
c = 12.5543 (2) Å | 0.30 × 0.25 × 0.20 mm |
β = 98.537 (1)° |
Bruker SMART CCD area-detector diffractometer | 9864 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | 7340 reflections with I > 2σ(I) |
Tmin = 0.969, Tmax = 0.979 | Rint = 0.039 |
55902 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 2 restraints |
wR(F2) = 0.146 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.50 e Å−3 |
9864 reflections | Δρmin = −0.33 e Å−3 |
335 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 > 2σ(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. An extinction parameter (EXTI in SHELXL-97) refined to zero and was removed from the refinement. |
x | y | z | Uiso*/Ueq | ||
Al | 1.01187 (3) | 0.14505 (2) | 0.20418 (3) | 0.02200 (9) | |
N1 | 0.57741 (10) | 0.09740 (5) | 0.12462 (8) | 0.02006 (19) | |
H1 | 0.5904 (14) | 0.0533 (7) | 0.1342 (13) | 0.024* | |
N2 | 0.47850 (9) | 0.08185 (5) | −0.12975 (8) | 0.01998 (19) | |
H2 | 0.4441 (13) | 0.0848 (8) | −0.0723 (11) | 0.024* | |
O1 | 0.90038 (8) | 0.10626 (5) | 0.11103 (7) | 0.02398 (18) | |
C1 | 0.86433 (10) | 0.04405 (6) | 0.07380 (9) | 0.0192 (2) | |
C2 | 0.93110 (11) | −0.01616 (6) | 0.10154 (10) | 0.0228 (2) | |
H2B | 1.0040 | −0.0137 | 0.1509 | 0.027* | |
C3 | 0.89153 (12) | −0.07922 (7) | 0.05754 (10) | 0.0250 (2) | |
H3A | 0.9377 | −0.1196 | 0.0769 | 0.030* | |
C4 | 0.78513 (12) | −0.08382 (6) | −0.01458 (10) | 0.0247 (2) | |
H4A | 0.7578 | −0.1271 | −0.0441 | 0.030* | |
C5 | 0.71913 (11) | −0.02421 (6) | −0.04303 (9) | 0.0212 (2) | |
H5A | 0.6468 | −0.0271 | −0.0931 | 0.025* | |
C6 | 0.75665 (10) | 0.03961 (6) | 0.00020 (9) | 0.0178 (2) | |
C7 | 0.68922 (10) | 0.10618 (6) | −0.03436 (9) | 0.0177 (2) | |
H7A | 0.7507 | 0.1398 | −0.0526 | 0.021* | |
C8 | 1.11591 (13) | 0.08255 (8) | 0.29899 (12) | 0.0338 (3) | |
H8A | 1.0665 | 0.0467 | 0.3258 | 0.051* | |
H8B | 1.1586 | 0.1085 | 0.3599 | 0.051* | |
H8C | 1.1747 | 0.0612 | 0.2587 | 0.051* | |
C9 | 1.07672 (16) | 0.22760 (8) | 0.14422 (14) | 0.0394 (4) | |
H9A | 1.0100 | 0.2562 | 0.1095 | 0.059* | |
H9B | 1.1281 | 0.2141 | 0.0909 | 0.059* | |
H9C | 1.1246 | 0.2538 | 0.2022 | 0.059* | |
C11 | 0.63063 (10) | 0.13818 (6) | 0.05412 (9) | 0.0171 (2) | |
C12 | 0.61172 (11) | 0.20616 (6) | 0.07482 (9) | 0.0191 (2) | |
C13 | 0.65235 (14) | 0.26706 (7) | 0.01607 (11) | 0.0289 (3) | |
H13A | 0.6934 | 0.2511 | −0.0430 | 0.043* | |
H13B | 0.7081 | 0.2950 | 0.0660 | 0.043* | |
H13C | 0.5821 | 0.2949 | −0.0131 | 0.043* | |
C14 | 0.54458 (10) | 0.20819 (6) | 0.16404 (9) | 0.0190 (2) | |
C15 | 0.50018 (12) | 0.26175 (7) | 0.22256 (10) | 0.0254 (2) | |
H15A | 0.5110 | 0.3085 | 0.2039 | 0.030* | |
C16 | 0.44039 (12) | 0.24503 (7) | 0.30784 (11) | 0.0280 (3) | |
H16A | 0.4102 | 0.2809 | 0.3479 | 0.034* | |
C17 | 0.42337 (12) | 0.17622 (7) | 0.33649 (11) | 0.0271 (3) | |
H17A | 0.3821 | 0.1665 | 0.3956 | 0.033* | |
C18 | 0.46554 (12) | 0.12220 (7) | 0.28017 (10) | 0.0249 (2) | |
H18A | 0.4539 | 0.0756 | 0.2992 | 0.030* | |
C19 | 0.52584 (11) | 0.13945 (6) | 0.19429 (9) | 0.0192 (2) | |
C21 | 0.59924 (10) | 0.09616 (6) | −0.13497 (9) | 0.0182 (2) | |
C22 | 0.61934 (11) | 0.09319 (6) | −0.23992 (9) | 0.0188 (2) | |
C23 | 0.73747 (11) | 0.10156 (7) | −0.28045 (10) | 0.0241 (2) | |
H23A | 0.8034 | 0.0993 | −0.2198 | 0.036* | |
H23B | 0.7393 | 0.1463 | −0.3164 | 0.036* | |
H23C | 0.7471 | 0.0646 | −0.3317 | 0.036* | |
C24 | 0.50504 (11) | 0.07783 (6) | −0.30392 (9) | 0.0189 (2) | |
C25 | 0.46808 (12) | 0.06826 (7) | −0.41469 (10) | 0.0243 (2) | |
H25A | 0.5242 | 0.0723 | −0.4641 | 0.029* | |
C26 | 0.34840 (13) | 0.05292 (7) | −0.45055 (10) | 0.0287 (3) | |
H26A | 0.3228 | 0.0459 | −0.5253 | 0.034* | |
C27 | 0.26399 (12) | 0.04754 (7) | −0.37887 (11) | 0.0282 (3) | |
H27A | 0.1822 | 0.0374 | −0.4062 | 0.034* | |
C28 | 0.29754 (11) | 0.05678 (7) | −0.26873 (10) | 0.0239 (2) | |
H28A | 0.2405 | 0.0533 | −0.2200 | 0.029* | |
C29 | 0.41869 (11) | 0.07144 (6) | −0.23296 (9) | 0.0194 (2) | |
O2 | 0.91231 (9) | 0.18169 (5) | 0.30148 (8) | 0.0269 (2) | |
C31 | 0.83901 (18) | 0.13759 (9) | 0.35943 (18) | 0.0520 (5) | |
H31A | 0.8909 | 0.1064 | 0.4086 | 0.062* | |
H31B | 0.7834 | 0.1094 | 0.3084 | 0.062* | |
C32 | 0.76950 (18) | 0.18470 (12) | 0.42187 (15) | 0.0518 (5) | |
H32A | 0.7866 | 0.1739 | 0.4997 | 0.062* | |
H32B | 0.6818 | 0.1795 | 0.3977 | 0.062* | |
C33 | 0.80926 (15) | 0.25690 (10) | 0.40136 (14) | 0.0440 (4) | |
H33A | 0.7398 | 0.2889 | 0.3925 | 0.053* | |
H33B | 0.8701 | 0.2733 | 0.4613 | 0.053* | |
C34 | 0.86274 (15) | 0.25129 (8) | 0.29894 (13) | 0.0359 (3) | |
H34A | 0.8001 | 0.2577 | 0.2353 | 0.043* | |
H34B | 0.9270 | 0.2861 | 0.2969 | 0.043* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Al | 0.02055 (18) | 0.02033 (18) | 0.02432 (19) | −0.00075 (13) | 0.00067 (14) | −0.00421 (14) |
N1 | 0.0270 (5) | 0.0147 (4) | 0.0193 (4) | 0.0000 (4) | 0.0063 (4) | −0.0003 (3) |
N2 | 0.0208 (5) | 0.0241 (5) | 0.0153 (4) | −0.0012 (4) | 0.0038 (3) | −0.0005 (4) |
O1 | 0.0225 (4) | 0.0200 (4) | 0.0274 (4) | 0.0005 (3) | −0.0033 (3) | −0.0048 (3) |
C1 | 0.0203 (5) | 0.0190 (5) | 0.0188 (5) | 0.0007 (4) | 0.0044 (4) | −0.0010 (4) |
C2 | 0.0215 (5) | 0.0229 (6) | 0.0239 (5) | 0.0033 (4) | 0.0034 (4) | 0.0003 (4) |
C3 | 0.0291 (6) | 0.0202 (5) | 0.0268 (6) | 0.0054 (5) | 0.0079 (5) | 0.0013 (4) |
C4 | 0.0326 (6) | 0.0180 (5) | 0.0247 (6) | −0.0013 (5) | 0.0086 (5) | −0.0032 (4) |
C5 | 0.0238 (5) | 0.0206 (5) | 0.0192 (5) | −0.0028 (4) | 0.0039 (4) | −0.0014 (4) |
C6 | 0.0190 (5) | 0.0188 (5) | 0.0159 (5) | −0.0002 (4) | 0.0042 (4) | −0.0004 (4) |
C7 | 0.0194 (5) | 0.0185 (5) | 0.0149 (4) | −0.0009 (4) | 0.0021 (4) | −0.0007 (4) |
C8 | 0.0308 (7) | 0.0337 (7) | 0.0334 (7) | 0.0073 (6) | −0.0068 (5) | −0.0077 (6) |
C9 | 0.0462 (9) | 0.0279 (7) | 0.0473 (9) | −0.0103 (6) | 0.0172 (7) | −0.0066 (6) |
C11 | 0.0184 (5) | 0.0177 (5) | 0.0148 (4) | −0.0006 (4) | 0.0011 (4) | 0.0001 (4) |
C12 | 0.0215 (5) | 0.0170 (5) | 0.0183 (5) | 0.0006 (4) | 0.0014 (4) | 0.0009 (4) |
C13 | 0.0397 (7) | 0.0203 (6) | 0.0283 (6) | −0.0012 (5) | 0.0104 (5) | 0.0036 (5) |
C14 | 0.0200 (5) | 0.0180 (5) | 0.0184 (5) | 0.0018 (4) | 0.0009 (4) | −0.0004 (4) |
C15 | 0.0299 (6) | 0.0197 (6) | 0.0268 (6) | 0.0055 (5) | 0.0052 (5) | −0.0012 (4) |
C16 | 0.0296 (6) | 0.0270 (6) | 0.0288 (6) | 0.0063 (5) | 0.0085 (5) | −0.0047 (5) |
C17 | 0.0281 (6) | 0.0302 (7) | 0.0250 (6) | 0.0012 (5) | 0.0100 (5) | −0.0019 (5) |
C18 | 0.0294 (6) | 0.0232 (6) | 0.0236 (6) | −0.0012 (5) | 0.0087 (5) | 0.0000 (4) |
C19 | 0.0205 (5) | 0.0194 (5) | 0.0176 (5) | 0.0001 (4) | 0.0024 (4) | −0.0021 (4) |
C21 | 0.0193 (5) | 0.0182 (5) | 0.0169 (5) | 0.0000 (4) | 0.0026 (4) | 0.0003 (4) |
C22 | 0.0218 (5) | 0.0186 (5) | 0.0165 (5) | 0.0016 (4) | 0.0039 (4) | 0.0011 (4) |
C23 | 0.0241 (6) | 0.0278 (6) | 0.0217 (5) | 0.0013 (5) | 0.0073 (4) | 0.0002 (4) |
C24 | 0.0231 (5) | 0.0169 (5) | 0.0164 (5) | 0.0019 (4) | 0.0021 (4) | 0.0007 (4) |
C25 | 0.0316 (6) | 0.0238 (6) | 0.0169 (5) | 0.0033 (5) | 0.0019 (4) | 0.0003 (4) |
C26 | 0.0370 (7) | 0.0274 (6) | 0.0192 (5) | 0.0014 (5) | −0.0044 (5) | −0.0009 (5) |
C27 | 0.0267 (6) | 0.0261 (6) | 0.0288 (6) | −0.0021 (5) | −0.0053 (5) | 0.0004 (5) |
C28 | 0.0230 (6) | 0.0229 (6) | 0.0251 (6) | −0.0019 (4) | 0.0011 (4) | 0.0008 (4) |
C29 | 0.0232 (5) | 0.0171 (5) | 0.0172 (5) | 0.0004 (4) | 0.0009 (4) | 0.0003 (4) |
O2 | 0.0309 (5) | 0.0226 (4) | 0.0278 (5) | 0.0018 (4) | 0.0059 (4) | −0.0036 (3) |
C31 | 0.0533 (11) | 0.0370 (9) | 0.0742 (13) | 0.0016 (8) | 0.0375 (10) | 0.0087 (8) |
C32 | 0.0499 (10) | 0.0722 (13) | 0.0371 (9) | −0.0054 (9) | 0.0191 (8) | −0.0110 (9) |
C33 | 0.0340 (8) | 0.0532 (10) | 0.0432 (9) | 0.0115 (7) | 0.0006 (7) | −0.0234 (8) |
C34 | 0.0371 (8) | 0.0257 (7) | 0.0451 (8) | 0.0077 (6) | 0.0065 (6) | −0.0065 (6) |
Al—O1 | 1.7498 (9) | C14—C19 | 1.4120 (16) |
Al—O2 | 1.9097 (10) | C15—C16 | 1.3833 (19) |
Al—C9 | 1.9562 (16) | C15—H15A | 0.9500 |
Al—C8 | 1.9588 (15) | C16—C17 | 1.404 (2) |
N1—C19 | 1.3841 (15) | C16—H16A | 0.9500 |
N1—C11 | 1.3866 (15) | C17—C18 | 1.3866 (18) |
N1—H1 | 0.874 (13) | C17—H17A | 0.9500 |
N2—C29 | 1.3824 (15) | C18—C19 | 1.3955 (16) |
N2—C21 | 1.3922 (15) | C18—H18A | 0.9500 |
N2—H2 | 0.869 (13) | C21—C22 | 1.3705 (15) |
O1—C1 | 1.3361 (14) | C22—C24 | 1.4384 (16) |
C1—C2 | 1.4038 (17) | C22—C23 | 1.4958 (16) |
C1—C6 | 1.4092 (16) | C23—H23A | 0.9800 |
C2—C3 | 1.3887 (18) | C23—H23B | 0.9800 |
C2—H2B | 0.9500 | C23—H23C | 0.9800 |
C3—C4 | 1.3888 (19) | C24—C25 | 1.4032 (16) |
C3—H3A | 0.9500 | C24—C29 | 1.4146 (16) |
C4—C5 | 1.3914 (18) | C25—C26 | 1.3822 (19) |
C4—H4A | 0.9500 | C25—H25A | 0.9500 |
C5—C6 | 1.3928 (16) | C26—C27 | 1.403 (2) |
C5—H5A | 0.9500 | C26—H26A | 0.9500 |
C6—C7 | 1.5273 (16) | C27—C28 | 1.3896 (18) |
C7—C11 | 1.5058 (15) | C27—H27A | 0.9500 |
C7—C21 | 1.5072 (16) | C28—C29 | 1.3944 (17) |
C7—H7A | 1.0000 | C28—H28A | 0.9500 |
C8—H8A | 0.9800 | O2—C31 | 1.4541 (19) |
C8—H8B | 0.9800 | O2—C34 | 1.4598 (17) |
C8—H8C | 0.9800 | C31—C32 | 1.496 (3) |
C9—H9A | 0.9800 | C31—H31A | 0.9900 |
C9—H9B | 0.9800 | C31—H31B | 0.9900 |
C9—H9C | 0.9800 | C32—C33 | 1.505 (3) |
C11—C12 | 1.3680 (16) | C32—H32A | 0.9900 |
C12—C14 | 1.4396 (16) | C32—H32B | 0.9900 |
C12—C13 | 1.4999 (17) | C33—C34 | 1.501 (2) |
C13—H13A | 0.9800 | C33—H33A | 0.9900 |
C13—H13B | 0.9800 | C33—H33B | 0.9900 |
C13—H13C | 0.9800 | C34—H34A | 0.9900 |
C14—C15 | 1.4063 (17) | C34—H34B | 0.9900 |
O1—Al—O2 | 99.27 (5) | C15—C16—H16A | 119.3 |
O1—Al—C9 | 111.39 (7) | C17—C16—H16A | 119.3 |
O2—Al—C9 | 103.09 (6) | C18—C17—C16 | 121.32 (12) |
O1—Al—C8 | 116.16 (6) | C18—C17—H17A | 119.3 |
O2—Al—C8 | 101.16 (6) | C16—C17—H17A | 119.3 |
C9—Al—C8 | 121.34 (8) | C17—C18—C19 | 116.94 (12) |
C19—N1—C11 | 109.02 (10) | C17—C18—H18A | 121.5 |
C19—N1—H1 | 124.6 (10) | C19—C18—H18A | 121.5 |
C11—N1—H1 | 124.7 (10) | N1—C19—C18 | 129.94 (11) |
C29—N2—C21 | 108.92 (9) | N1—C19—C14 | 107.16 (10) |
C29—N2—H2 | 125.1 (10) | C18—C19—C14 | 122.90 (11) |
C21—N2—H2 | 125.4 (10) | C22—C21—N2 | 109.66 (10) |
C1—O1—Al | 140.52 (8) | C22—C21—C7 | 128.77 (11) |
O1—C1—C2 | 122.96 (11) | N2—C21—C7 | 121.34 (10) |
O1—C1—C6 | 118.01 (10) | C21—C22—C24 | 106.62 (10) |
C2—C1—C6 | 118.99 (11) | C21—C22—C23 | 127.05 (11) |
C3—C2—C1 | 120.59 (12) | C24—C22—C23 | 126.30 (10) |
C3—C2—H2B | 119.7 | C22—C23—H23A | 109.5 |
C1—C2—H2B | 119.7 | C22—C23—H23B | 109.5 |
C2—C3—C4 | 120.57 (12) | H23A—C23—H23B | 109.5 |
C2—C3—H3A | 119.7 | C22—C23—H23C | 109.5 |
C4—C3—H3A | 119.7 | H23A—C23—H23C | 109.5 |
C3—C4—C5 | 119.07 (12) | H23B—C23—H23C | 109.5 |
C3—C4—H4A | 120.5 | C25—C24—C29 | 118.93 (11) |
C5—C4—H4A | 120.5 | C25—C24—C22 | 133.50 (11) |
C4—C5—C6 | 121.48 (11) | C29—C24—C22 | 107.57 (10) |
C4—C5—H5A | 119.3 | C26—C25—C24 | 118.73 (12) |
C6—C5—H5A | 119.3 | C26—C25—H25A | 120.6 |
C5—C6—C1 | 119.30 (11) | C24—C25—H25A | 120.6 |
C5—C6—C7 | 122.31 (10) | C25—C26—C27 | 121.40 (12) |
C1—C6—C7 | 118.28 (10) | C25—C26—H26A | 119.3 |
C11—C7—C21 | 111.15 (9) | C27—C26—H26A | 119.3 |
C11—C7—C6 | 113.02 (9) | C28—C27—C26 | 121.34 (12) |
C21—C7—C6 | 111.72 (9) | C28—C27—H27A | 119.3 |
C11—C7—H7A | 106.8 | C26—C27—H27A | 119.3 |
C21—C7—H7A | 106.8 | C27—C28—C29 | 116.96 (12) |
C6—C7—H7A | 106.8 | C27—C28—H28A | 121.5 |
Al—C8—H8A | 109.5 | C29—C28—H28A | 121.5 |
Al—C8—H8B | 109.5 | N2—C29—C28 | 130.16 (11) |
H8A—C8—H8B | 109.5 | N2—C29—C24 | 107.20 (10) |
Al—C8—H8C | 109.5 | C28—C29—C24 | 122.64 (11) |
H8A—C8—H8C | 109.5 | C31—O2—C34 | 108.35 (11) |
H8B—C8—H8C | 109.5 | C31—O2—Al | 121.84 (9) |
Al—C9—H9A | 109.5 | C34—O2—Al | 125.98 (9) |
Al—C9—H9B | 109.5 | O2—C31—C32 | 106.18 (15) |
H9A—C9—H9B | 109.5 | O2—C31—H31A | 110.5 |
Al—C9—H9C | 109.5 | C32—C31—H31A | 110.5 |
H9A—C9—H9C | 109.5 | O2—C31—H31B | 110.5 |
H9B—C9—H9C | 109.5 | C32—C31—H31B | 110.5 |
C12—C11—N1 | 109.66 (10) | H31A—C31—H31B | 108.7 |
C12—C11—C7 | 129.43 (10) | C31—C32—C33 | 106.83 (14) |
N1—C11—C7 | 120.74 (10) | C31—C32—H32A | 110.4 |
C11—C12—C14 | 106.73 (10) | C33—C32—H32A | 110.4 |
C11—C12—C13 | 126.92 (11) | C31—C32—H32B | 110.4 |
C14—C12—C13 | 126.36 (11) | C33—C32—H32B | 110.4 |
C12—C13—H13A | 109.5 | H32A—C32—H32B | 108.6 |
C12—C13—H13B | 109.5 | C34—C33—C32 | 104.18 (13) |
H13A—C13—H13B | 109.5 | C34—C33—H33A | 110.9 |
C12—C13—H13C | 109.5 | C32—C33—H33A | 110.9 |
H13A—C13—H13C | 109.5 | C34—C33—H33B | 110.9 |
H13B—C13—H13C | 109.5 | C32—C33—H33B | 110.9 |
C15—C14—C19 | 118.71 (11) | H33A—C33—H33B | 108.9 |
C15—C14—C12 | 133.87 (11) | O2—C34—C33 | 104.33 (13) |
C19—C14—C12 | 107.40 (10) | O2—C34—H34A | 110.9 |
C16—C15—C14 | 118.70 (12) | C33—C34—H34A | 110.9 |
C16—C15—H15A | 120.6 | O2—C34—H34B | 110.9 |
C14—C15—H15A | 120.6 | C33—C34—H34B | 110.9 |
C15—C16—C17 | 121.43 (12) | H34A—C34—H34B | 108.9 |
O2—Al—O1—C1 | −114.62 (13) | C12—C14—C19—N1 | −1.19 (13) |
C9—Al—O1—C1 | 137.30 (13) | C15—C14—C19—C18 | −0.29 (18) |
C8—Al—O1—C1 | −7.24 (15) | C12—C14—C19—C18 | 178.64 (11) |
Al—O1—C1—C2 | −7.9 (2) | C29—N2—C21—C22 | −1.74 (14) |
Al—O1—C1—C6 | 174.60 (10) | C29—N2—C21—C7 | −176.69 (10) |
O1—C1—C2—C3 | −177.73 (11) | C11—C7—C21—C22 | 153.80 (12) |
C6—C1—C2—C3 | −0.25 (18) | C6—C7—C21—C22 | −78.94 (15) |
C1—C2—C3—C4 | −0.09 (19) | C11—C7—C21—N2 | −32.31 (15) |
C2—C3—C4—C5 | 0.61 (19) | C6—C7—C21—N2 | 94.95 (13) |
C3—C4—C5—C6 | −0.81 (18) | N2—C21—C22—C24 | 1.35 (13) |
C4—C5—C6—C1 | 0.48 (17) | C7—C21—C22—C24 | 175.81 (11) |
C4—C5—C6—C7 | 176.69 (11) | N2—C21—C22—C23 | −176.55 (11) |
O1—C1—C6—C5 | 177.66 (10) | C7—C21—C22—C23 | −2.1 (2) |
C2—C1—C6—C5 | 0.05 (16) | C21—C22—C24—C25 | −179.78 (13) |
O1—C1—C6—C7 | 1.30 (15) | C23—C22—C24—C25 | −1.9 (2) |
C2—C1—C6—C7 | −176.31 (10) | C21—C22—C24—C29 | −0.48 (13) |
C5—C6—C7—C11 | 113.18 (12) | C23—C22—C24—C29 | 177.43 (11) |
C1—C6—C7—C11 | −70.57 (13) | C29—C24—C25—C26 | 0.00 (18) |
C5—C6—C7—C21 | −13.06 (15) | C22—C24—C25—C26 | 179.24 (13) |
C1—C6—C7—C21 | 163.18 (10) | C24—C25—C26—C27 | 0.7 (2) |
C19—N1—C11—C12 | −1.64 (13) | C25—C26—C27—C28 | −0.6 (2) |
C19—N1—C11—C7 | −177.26 (10) | C26—C27—C28—C29 | −0.1 (2) |
C21—C7—C11—C12 | −86.14 (15) | C21—N2—C29—C28 | −179.01 (12) |
C6—C7—C11—C12 | 147.32 (12) | C21—N2—C29—C24 | 1.39 (13) |
C21—C7—C11—N1 | 88.52 (12) | C27—C28—C29—N2 | −178.71 (12) |
C6—C7—C11—N1 | −38.02 (14) | C27—C28—C29—C24 | 0.83 (18) |
N1—C11—C12—C14 | 0.85 (13) | C25—C24—C29—N2 | 178.86 (11) |
C7—C11—C12—C14 | 175.98 (11) | C22—C24—C29—N2 | −0.56 (13) |
N1—C11—C12—C13 | −178.94 (12) | C25—C24—C29—C28 | −0.78 (18) |
C7—C11—C12—C13 | −3.8 (2) | C22—C24—C29—C28 | 179.80 (11) |
C11—C12—C14—C15 | 178.93 (13) | O1—Al—O2—C31 | 61.17 (14) |
C13—C12—C14—C15 | −1.3 (2) | C9—Al—O2—C31 | 175.83 (14) |
C11—C12—C14—C19 | 0.22 (13) | C8—Al—O2—C31 | −58.00 (14) |
C13—C12—C14—C19 | −179.99 (12) | O1—Al—O2—C34 | −94.15 (11) |
C19—C14—C15—C16 | 0.32 (18) | C9—Al—O2—C34 | 20.51 (13) |
C12—C14—C15—C16 | −178.27 (13) | C8—Al—O2—C34 | 146.67 (11) |
C14—C15—C16—C17 | −0.1 (2) | C34—O2—C31—C32 | −17.7 (2) |
C15—C16—C17—C18 | −0.2 (2) | Al—O2—C31—C32 | −176.89 (12) |
C16—C17—C18—C19 | 0.2 (2) | O2—C31—C32—C33 | −2.3 (2) |
C11—N1—C19—C18 | −178.09 (12) | C31—C32—C33—C34 | 20.5 (2) |
C11—N1—C19—C14 | 1.73 (13) | C31—O2—C34—C33 | 30.70 (17) |
C17—C18—C19—N1 | 179.81 (12) | Al—O2—C34—C33 | −171.24 (9) |
C17—C18—C19—C14 | 0.01 (19) | C32—C33—C34—O2 | −30.95 (17) |
C15—C14—C19—N1 | 179.87 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···N1 | 0.87 (1) | 2.70 (2) | 3.2353 (14) | 121 (1) |
N1—H1···N2i | 0.87 (1) | 2.73 (1) | 3.5391 (15) | 154 (1) |
Symmetry code: (i) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [Al(CH3)2(C25H21N2O)(C4H8O)] |
Mr | 494.59 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 115 |
a, b, c (Å) | 11.2045 (1), 19.4191 (3), 12.5543 (2) |
β (°) | 98.537 (1) |
V (Å3) | 2701.32 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 1999) |
Tmin, Tmax | 0.969, 0.979 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 55902, 9864, 7340 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.759 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.146, 1.04 |
No. of reflections | 9864 |
No. of parameters | 335 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.50, −0.33 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), Mercury (Macrae et al., 2006), enCIFer (Allen et al., 2004).
Al—O1 | 1.7498 (9) | Al—C9 | 1.9562 (16) |
Al—O2 | 1.9097 (10) | Al—C8 | 1.9588 (15) |
O1—Al—O2 | 99.27 (5) | C9—Al—C8 | 121.34 (8) |
O2—Al—C8 | 101.16 (6) | C1—O1—Al | 140.52 (8) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···N1 | 0.869 (13) | 2.703 (15) | 3.2353 (14) | 120.8 (12) |
N1—H1···N2i | 0.874 (13) | 2.734 (14) | 3.5391 (15) | 153.8 (14) |
Symmetry code: (i) −x+1, −y, −z. |
Acknowledgements
This work was generously supported by Kenyon College Startup Funds, Kenyon College Summer Science Scholars Program (ACE), the American Chemical Society's Petroleum Research Fund (42880-GB 7) (YDYLG) and the National Science Foundation (CHE-0521237) (JMT).
References
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The molecule of the title complex (Fig. 1), has a distorted tetrahedral coordination geometry around aluminum with X—Al—X (X = C, O) angles ranging from 99.26 (5)° to 121.34 (8)°. The phenoxy(bisindolyl)methane ligand is coordinated to aluminum through a deprotonated phenol oxygen that is bent well out of the ideal sp3 to 140.50 (8)°, consistent with significant π-donation to Al(III) from the phenoxide O. In the crystal structure (Fig. 2), weak intramolecular N—H···N interactions may stabilize the ligand conformations while weak intermolecular N—H···N interactions may stabilize crystal packing. The distances of these contacts [2.703 (15) Å and 2.734 (14) Å, respectively] are quite long (Steiner, 2002). However, they are slightly less then the sum of the relevant Van der Waals radii.