organic compounds
2-[(5-Chloro-2-hydroxybenzylidene)amino]-3′,6′-bis(diethylamino)spiro[isoindoline-1,9′-xanthen]-3-one
aCollege of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan Province 461000, People's Republic of China
*Correspondence e-mail: xuzhihong1980@yahoo.cn
The title compound, C35H35ClN4O3, resulted from a spirolactam ring closure of rhodamine B dye. The xanthene ring system is approximately planar [r.m.s. deviation = 0.050 (9) Å for the xanthene ring]. The dihedral angles formed by the spirolactam and 5-chloro-2-hydroxybenzene rings with the xanthene ring system are 87.9 (7) and 79.1 (7)°, respectively.
Related literature
For rhodamine derivatives bearing a lactam unit, see: Deng et al. (2009); Kwon et al., 2005; Tian & Peng (2008); Wu et al. (2007); Xu et al. (2009); Zhang et al. (2008).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810019549/cs2127sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810019549/cs2127Isup2.hkl
A portion of rhodamine B hydrazide (0.46 g, 1 mmol) and 2-hydroxy-5-chlorobenzaldehyde (0.17 g, 1.1 mmol) were mixed in 20 ml ethanol to which three drops acetic acid was added. The reaction solution was refluxed for 3 hours under N2 atmosphere, the precipatate was separated and washed by ethanol to give 0.30 g of the title compound in 50% yield. Single crystals suitable for X-ray measurements were obtained from the mother liquid by slow solvent evaporation at room temperatures.
The H atoms attached to C, N and O atoms were placed in geometrically calculated positions (C—H = 0.93–0.97 Å and O—H = 0.82 Å) and refined as riding, with Uiso(H) = 1.2Ueq(C, N) or 1.5Ueq(methyl C, O).
Among many fluorescent compounds,
are known to have excellent photophysical properties, and they are one of the most widely used fluorophores for labeling and sensing biomolecules. There are a few single-crystal reports on rhodamine derivatives bearing a lactam moiety (Xu et al., 2009; Kwon et al., 2005; Wu et al., 2007; Zhang et al., 2008; Tian et al., 2008; Deng et al., 2009). Detailed information on their molecular and crystal structures is necessary to understand their photophysical and photochemical properties.In agreement with other reported models, (Xu et al., 2009; Wu et al., 2007; Zhang et al., 2008; Tian et al., 2008) the main skeleton of the molecule is formed by the xanthene ring and the spirolactam-ring. As shown in Figure 1, the atoms of the xanthene ring or the spirolactam-ring are both nearly planar and are almost perpendicular to each other. The dihedral angle between the xanthene and the spirolactam ring fragment mean planes is 87.9 (7)°. The dihedral angle between the xanthene mean plane and the 2-hydroxy-5-cholorobenzene ring is 79.1 (7)°.
For rhodamine derivatives bearing a lactam unit, see: Deng et al. (2009); Kwon et al., 2005; Tian & Peng (2008); Wu et al. (2007); Xu et al. (2009); Zhang et al. (2008).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, with H atoms omitted and with displacement ellipsoids drawn at 50% probability level |
C35H35ClN4O3 | F(000) = 1256 |
Mr = 595.12 | Dx = 1.245 Mg m−3 |
Orthorhombic, Pca21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2c -2ac | Cell parameters from 1377 reflections |
a = 21.609 (9) Å | θ = 2.5–17.6° |
b = 11.892 (5) Å | µ = 0.16 mm−1 |
c = 12.355 (5) Å | T = 296 K |
V = 3175 (2) Å3 | Block, red |
Z = 4 | 0.35 × 0.32 × 0.29 mm |
Bruker APEXII CCD diffractometer | 5528 independent reflections |
Radiation source: fine-focus sealed tube | 2820 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.079 |
φ and ω scans | θmax = 25.2°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −21→25 |
Tmin = 0.946, Tmax = 0.955 | k = −14→14 |
16073 measured reflections | l = −14→14 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.049 | w = 1/[σ2(Fo2) + (0.020P)2 + 0.0114P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.088 | (Δ/σ)max = 0.001 |
S = 1.02 | Δρmax = 0.20 e Å−3 |
5528 reflections | Δρmin = −0.25 e Å−3 |
394 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
1 restraint | Extinction coefficient: 0.0018 (2) |
Primary atom site location: structure-invariant direct methods | Absolute structure: Flack (1983), 2521 Friedel pairs |
Secondary atom site location: difference Fourier map | Absolute structure parameter: −0.05 (8) |
C35H35ClN4O3 | V = 3175 (2) Å3 |
Mr = 595.12 | Z = 4 |
Orthorhombic, Pca21 | Mo Kα radiation |
a = 21.609 (9) Å | µ = 0.16 mm−1 |
b = 11.892 (5) Å | T = 296 K |
c = 12.355 (5) Å | 0.35 × 0.32 × 0.29 mm |
Bruker APEXII CCD diffractometer | 5528 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2820 reflections with I > 2σ(I) |
Tmin = 0.946, Tmax = 0.955 | Rint = 0.079 |
16073 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | H-atom parameters constrained |
wR(F2) = 0.088 | Δρmax = 0.20 e Å−3 |
S = 1.02 | Δρmin = −0.25 e Å−3 |
5528 reflections | Absolute structure: Flack (1983), 2521 Friedel pairs |
394 parameters | Absolute structure parameter: −0.05 (8) |
1 restraint |
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 | ||
C1 | 0.91042 (15) | 0.2527 (3) | 0.2707 (3) | 0.0444 (10) | |
C2 | 0.92493 (16) | 0.3631 (3) | 0.2392 (3) | 0.0556 (11) | |
H2 | 0.9307 | 0.4173 | 0.2926 | 0.067* | |
C3 | 0.93088 (18) | 0.3942 (3) | 0.1323 (3) | 0.0610 (12) | |
H3 | 0.9403 | 0.4684 | 0.1151 | 0.073* | |
C4 | 0.92276 (16) | 0.3146 (3) | 0.0482 (3) | 0.0514 (10) | |
C5 | 0.90881 (15) | 0.2049 (3) | 0.0793 (3) | 0.0498 (10) | |
H5 | 0.9034 | 0.1499 | 0.0265 | 0.060* | |
C6 | 0.90281 (15) | 0.1763 (3) | 0.1872 (3) | 0.0480 (10) | |
C7 | 0.88582 (16) | 0.0256 (3) | 0.3112 (3) | 0.0487 (10) | |
C8 | 0.87418 (16) | −0.0896 (3) | 0.3190 (3) | 0.0504 (11) | |
H8 | 0.8687 | −0.1325 | 0.2568 | 0.060* | |
C9 | 0.87086 (18) | −0.1398 (3) | 0.4202 (3) | 0.0581 (11) | |
C10 | 0.88058 (19) | −0.0710 (3) | 0.5111 (3) | 0.0709 (13) | |
H10 | 0.8796 | −0.1027 | 0.5799 | 0.085* | |
C11 | 0.89161 (17) | 0.0435 (3) | 0.4998 (3) | 0.0627 (12) | |
H11 | 0.8975 | 0.0870 | 0.5615 | 0.075* | |
C12 | 0.89403 (16) | 0.0949 (3) | 0.3985 (3) | 0.0435 (9) | |
C13 | 0.90153 (15) | 0.2201 (3) | 0.3879 (3) | 0.0433 (9) | |
C14 | 0.84695 (17) | 0.2814 (3) | 0.4418 (3) | 0.0469 (10) | |
C15 | 0.78553 (18) | 0.2786 (3) | 0.4104 (4) | 0.0660 (12) | |
H15 | 0.7734 | 0.2405 | 0.3482 | 0.079* | |
C16 | 0.7425 (2) | 0.3343 (4) | 0.4747 (4) | 0.0814 (15) | |
H16 | 0.7009 | 0.3328 | 0.4556 | 0.098* | |
C17 | 0.7606 (2) | 0.3919 (4) | 0.5666 (4) | 0.0858 (15) | |
H17 | 0.7311 | 0.4284 | 0.6085 | 0.103* | |
C18 | 0.8217 (2) | 0.3960 (3) | 0.5970 (4) | 0.0689 (12) | |
H18 | 0.8340 | 0.4341 | 0.6591 | 0.083* | |
C19 | 0.86485 (18) | 0.3410 (3) | 0.5316 (3) | 0.0489 (10) | |
C20 | 0.93194 (19) | 0.3317 (3) | 0.5431 (3) | 0.0514 (10) | |
C21 | 1.03453 (16) | 0.1615 (3) | 0.3910 (3) | 0.0563 (11) | |
H21 | 1.0103 | 0.1392 | 0.3326 | 0.068* | |
C22 | 1.09773 (17) | 0.1217 (3) | 0.4016 (3) | 0.0524 (10) | |
C23 | 1.12309 (18) | 0.0528 (3) | 0.3199 (3) | 0.0580 (11) | |
H23 | 1.0995 | 0.0352 | 0.2593 | 0.070* | |
C24 | 1.1822 (2) | 0.0114 (3) | 0.3287 (4) | 0.0641 (12) | |
C25 | 1.21808 (19) | 0.0326 (4) | 0.4194 (4) | 0.0769 (13) | |
H25 | 1.2574 | 0.0015 | 0.4259 | 0.092* | |
C26 | 1.1946 (2) | 0.1004 (4) | 0.4997 (4) | 0.0796 (15) | |
H26 | 1.2186 | 0.1161 | 0.5604 | 0.096* | |
C27 | 1.1352 (2) | 0.1458 (4) | 0.4911 (3) | 0.0609 (12) | |
C28 | 0.9453 (2) | 0.4583 (4) | −0.0927 (4) | 0.0861 (15) | |
H28A | 0.9664 | 0.4545 | −0.1619 | 0.103* | |
H28B | 0.9740 | 0.4894 | −0.0403 | 0.103* | |
C29 | 0.8901 (3) | 0.5355 (4) | −0.1026 (4) | 0.1127 (19) | |
H29A | 0.8574 | 0.4974 | −0.1404 | 0.169* | |
H29B | 0.9018 | 0.6018 | −0.1419 | 0.169* | |
H29C | 0.8760 | 0.5563 | −0.0317 | 0.169* | |
C30 | 0.91860 (19) | 0.2621 (4) | −0.1446 (3) | 0.0635 (12) | |
H30A | 0.9042 | 0.3014 | −0.2086 | 0.076* | |
H30B | 0.8863 | 0.2103 | −0.1227 | 0.076* | |
C31 | 0.9757 (2) | 0.1955 (4) | −0.1738 (4) | 0.1004 (17) | |
H31A | 1.0088 | 0.2461 | −0.1914 | 0.151* | |
H31B | 0.9669 | 0.1484 | −0.2350 | 0.151* | |
H31C | 0.9877 | 0.1495 | −0.1134 | 0.151* | |
C32 | 0.8484 (3) | −0.3280 (4) | 0.3399 (4) | 0.109 (2) | |
H32A | 0.8608 | −0.4034 | 0.3605 | 0.131* | |
H32B | 0.8748 | −0.3041 | 0.2807 | 0.131* | |
C33 | 0.7837 (3) | −0.3307 (5) | 0.3019 (5) | 0.177 (3) | |
H33A | 0.7571 | −0.3534 | 0.3603 | 0.266* | |
H33B | 0.7799 | −0.3834 | 0.2434 | 0.266* | |
H33C | 0.7718 | −0.2572 | 0.2774 | 0.266* | |
C34 | 0.8455 (3) | −0.3014 (4) | 0.5475 (6) | 0.125 (2) | |
H34A | 0.8259 | −0.2458 | 0.5935 | 0.150* | |
H34B | 0.8193 | −0.3676 | 0.5438 | 0.150* | |
C35 | 0.9045 (3) | −0.3290 (5) | 0.5864 (6) | 0.150 (3) | |
H35A | 0.9210 | −0.3904 | 0.5450 | 0.225* | |
H35B | 0.9017 | −0.3505 | 0.6611 | 0.225* | |
H35C | 0.9313 | −0.2650 | 0.5797 | 0.225* | |
Cl1 | 1.21296 (5) | −0.07129 (11) | 0.22454 (12) | 0.0958 (4) | |
N1 | 0.95241 (13) | 0.2637 (2) | 0.4589 (3) | 0.0472 (8) | |
N2 | 1.01262 (14) | 0.2276 (2) | 0.4631 (3) | 0.0489 (8) | |
N3 | 0.92790 (14) | 0.3435 (3) | −0.0588 (3) | 0.0665 (10) | |
N4 | 0.85785 (18) | −0.2527 (3) | 0.4319 (3) | 0.0830 (12) | |
O1 | 0.88834 (11) | 0.0645 (2) | 0.2056 (2) | 0.0611 (7) | |
O2 | 0.96649 (13) | 0.3715 (2) | 0.6133 (2) | 0.0667 (8) | |
O3 | 1.11542 (13) | 0.2139 (3) | 0.5725 (2) | 0.0799 (9) | |
H3A | 1.0809 | 0.2383 | 0.5579 | 0.120* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.046 (2) | 0.046 (2) | 0.040 (3) | −0.0038 (18) | −0.0038 (18) | 0.000 (2) |
C2 | 0.067 (3) | 0.050 (3) | 0.049 (3) | −0.015 (2) | −0.005 (2) | −0.009 (2) |
C3 | 0.075 (3) | 0.053 (3) | 0.055 (3) | −0.022 (2) | −0.003 (2) | 0.013 (2) |
C4 | 0.058 (3) | 0.057 (3) | 0.040 (3) | −0.011 (2) | −0.006 (2) | 0.003 (2) |
C5 | 0.067 (3) | 0.052 (3) | 0.030 (2) | −0.008 (2) | −0.001 (2) | 0.004 (2) |
C6 | 0.052 (2) | 0.046 (3) | 0.046 (3) | −0.0112 (19) | −0.004 (2) | 0.008 (2) |
C7 | 0.049 (2) | 0.049 (3) | 0.048 (3) | 0.000 (2) | 0.002 (2) | 0.006 (2) |
C8 | 0.063 (3) | 0.042 (3) | 0.046 (3) | −0.0063 (19) | 0.001 (2) | −0.004 (2) |
C9 | 0.087 (3) | 0.039 (2) | 0.048 (3) | −0.004 (2) | 0.002 (2) | 0.000 (2) |
C10 | 0.120 (4) | 0.052 (3) | 0.041 (3) | −0.009 (3) | 0.002 (3) | 0.009 (2) |
C11 | 0.094 (3) | 0.053 (3) | 0.041 (3) | −0.003 (2) | 0.001 (2) | −0.006 (2) |
C12 | 0.054 (2) | 0.046 (2) | 0.031 (2) | −0.0047 (19) | 0.0000 (19) | −0.001 (2) |
C13 | 0.044 (2) | 0.043 (2) | 0.043 (2) | −0.0087 (18) | −0.0043 (19) | −0.007 (2) |
C14 | 0.048 (2) | 0.042 (2) | 0.051 (3) | −0.0081 (19) | 0.001 (2) | −0.002 (2) |
C15 | 0.061 (3) | 0.065 (3) | 0.072 (3) | −0.002 (2) | 0.004 (3) | −0.019 (3) |
C16 | 0.054 (3) | 0.083 (3) | 0.108 (5) | 0.009 (3) | 0.004 (3) | −0.011 (4) |
C17 | 0.068 (4) | 0.080 (4) | 0.110 (5) | 0.011 (3) | 0.027 (3) | −0.015 (3) |
C18 | 0.085 (3) | 0.059 (3) | 0.063 (3) | 0.005 (3) | 0.008 (3) | −0.006 (2) |
C19 | 0.051 (3) | 0.048 (3) | 0.048 (3) | −0.003 (2) | 0.006 (2) | 0.003 (2) |
C20 | 0.069 (3) | 0.045 (3) | 0.040 (3) | −0.009 (2) | 0.005 (2) | 0.007 (2) |
C21 | 0.046 (3) | 0.069 (3) | 0.053 (3) | −0.008 (2) | −0.007 (2) | 0.012 (2) |
C22 | 0.043 (2) | 0.059 (3) | 0.055 (3) | −0.004 (2) | −0.002 (2) | 0.009 (2) |
C23 | 0.048 (3) | 0.075 (3) | 0.050 (3) | −0.001 (2) | −0.003 (2) | 0.021 (2) |
C24 | 0.054 (3) | 0.083 (3) | 0.055 (3) | 0.011 (2) | 0.006 (3) | 0.017 (2) |
C25 | 0.052 (3) | 0.093 (4) | 0.086 (4) | 0.008 (3) | −0.012 (3) | 0.020 (3) |
C26 | 0.052 (3) | 0.110 (4) | 0.077 (4) | −0.006 (3) | −0.023 (3) | 0.003 (3) |
C27 | 0.055 (3) | 0.073 (3) | 0.055 (3) | −0.005 (2) | −0.006 (3) | 0.009 (3) |
C28 | 0.121 (4) | 0.087 (4) | 0.050 (3) | −0.045 (3) | −0.001 (3) | 0.018 (3) |
C29 | 0.185 (6) | 0.057 (3) | 0.096 (4) | −0.014 (4) | −0.037 (4) | 0.013 (3) |
C30 | 0.081 (3) | 0.075 (3) | 0.034 (2) | 0.003 (3) | 0.000 (2) | 0.011 (2) |
C31 | 0.091 (4) | 0.115 (4) | 0.096 (4) | 0.013 (3) | 0.020 (3) | 0.013 (3) |
C32 | 0.186 (7) | 0.061 (3) | 0.081 (4) | −0.019 (4) | 0.003 (4) | 0.003 (3) |
C33 | 0.195 (8) | 0.181 (6) | 0.155 (7) | −0.090 (6) | −0.022 (6) | −0.032 (6) |
C34 | 0.137 (5) | 0.049 (3) | 0.190 (7) | −0.019 (3) | −0.056 (5) | 0.022 (4) |
C35 | 0.153 (6) | 0.115 (5) | 0.184 (8) | −0.001 (4) | 0.000 (5) | 0.034 (5) |
Cl1 | 0.0795 (8) | 0.1268 (10) | 0.0810 (9) | 0.0372 (7) | 0.0101 (8) | 0.0157 (9) |
N1 | 0.0449 (19) | 0.053 (2) | 0.044 (2) | −0.0050 (16) | 0.0026 (17) | −0.0028 (17) |
N2 | 0.046 (2) | 0.058 (2) | 0.043 (2) | −0.0033 (16) | −0.0016 (17) | 0.0066 (18) |
N3 | 0.088 (3) | 0.063 (2) | 0.048 (2) | −0.0181 (19) | −0.001 (2) | 0.013 (2) |
N4 | 0.155 (4) | 0.044 (2) | 0.050 (3) | −0.014 (2) | 0.013 (2) | 0.006 (2) |
O1 | 0.101 (2) | 0.0459 (16) | 0.0368 (17) | −0.0196 (15) | −0.0012 (16) | 0.0044 (14) |
O2 | 0.084 (2) | 0.0645 (19) | 0.0511 (19) | −0.0140 (15) | −0.0083 (16) | −0.0106 (16) |
O3 | 0.078 (2) | 0.092 (2) | 0.069 (2) | −0.0026 (18) | −0.0253 (19) | 0.000 (2) |
C1—C6 | 1.384 (4) | C22—C27 | 1.400 (5) |
C1—C2 | 1.405 (4) | C22—C23 | 1.411 (5) |
C1—C13 | 1.512 (5) | C23—C24 | 1.374 (5) |
C2—C3 | 1.377 (5) | C23—H23 | 0.9300 |
C2—H2 | 0.9300 | C24—C25 | 1.386 (5) |
C3—C4 | 1.416 (5) | C24—Cl1 | 1.751 (4) |
C3—H3 | 0.9300 | C25—C26 | 1.375 (5) |
C4—N3 | 1.372 (5) | C25—H25 | 0.9300 |
C4—C5 | 1.393 (5) | C26—C27 | 1.398 (5) |
C5—C6 | 1.382 (5) | C26—H26 | 0.9300 |
C5—H5 | 0.9300 | C27—O3 | 1.359 (4) |
C6—O1 | 1.384 (4) | C28—N3 | 1.477 (5) |
C7—C12 | 1.370 (5) | C28—C29 | 1.511 (5) |
C7—O1 | 1.385 (4) | C28—H28A | 0.9700 |
C7—C8 | 1.396 (5) | C28—H28B | 0.9700 |
C8—C9 | 1.387 (5) | C29—H29A | 0.9600 |
C8—H8 | 0.9300 | C29—H29B | 0.9600 |
C9—N4 | 1.379 (4) | C29—H29C | 0.9600 |
C9—C10 | 1.405 (5) | C30—N3 | 1.448 (5) |
C10—C11 | 1.390 (5) | C30—C31 | 1.510 (5) |
C10—H10 | 0.9300 | C30—H30A | 0.9700 |
C11—C12 | 1.394 (5) | C30—H30B | 0.9700 |
C11—H11 | 0.9300 | C31—H31A | 0.9600 |
C12—C13 | 1.503 (4) | C31—H31B | 0.9600 |
C13—N1 | 1.499 (4) | C31—H31C | 0.9600 |
C13—C14 | 1.539 (5) | C32—N4 | 1.461 (5) |
C14—C19 | 1.372 (5) | C32—C33 | 1.477 (6) |
C14—C15 | 1.383 (4) | C32—H32A | 0.9700 |
C15—C16 | 1.391 (5) | C32—H32B | 0.9700 |
C15—H15 | 0.9300 | C33—H33A | 0.9600 |
C16—C17 | 1.383 (6) | C33—H33B | 0.9600 |
C16—H16 | 0.9300 | C33—H33C | 0.9600 |
C17—C18 | 1.373 (5) | C34—C35 | 1.402 (6) |
C17—H17 | 0.9300 | C34—N4 | 1.565 (7) |
C18—C19 | 1.396 (5) | C34—H34A | 0.9700 |
C18—H18 | 0.9300 | C34—H34B | 0.9700 |
C19—C20 | 1.461 (5) | C35—H35A | 0.9600 |
C20—O2 | 1.239 (4) | C35—H35B | 0.9600 |
C20—N1 | 1.390 (4) | C35—H35C | 0.9600 |
C21—N2 | 1.279 (4) | N1—N2 | 1.371 (4) |
C21—C22 | 1.451 (5) | O3—H3A | 0.8200 |
C21—H21 | 0.9300 | ||
C6—C1—C2 | 115.7 (3) | C23—C24—C25 | 121.3 (4) |
C6—C1—C13 | 122.0 (3) | C23—C24—Cl1 | 119.7 (4) |
C2—C1—C13 | 122.2 (3) | C25—C24—Cl1 | 119.0 (4) |
C3—C2—C1 | 122.5 (4) | C26—C25—C24 | 119.0 (4) |
C3—C2—H2 | 118.8 | C26—C25—H25 | 120.5 |
C1—C2—H2 | 118.8 | C24—C25—H25 | 120.5 |
C2—C3—C4 | 120.8 (3) | C25—C26—C27 | 120.7 (4) |
C2—C3—H3 | 119.6 | C25—C26—H26 | 119.7 |
C4—C3—H3 | 119.6 | C27—C26—H26 | 119.7 |
N3—C4—C5 | 121.2 (4) | O3—C27—C26 | 117.5 (4) |
N3—C4—C3 | 122.0 (4) | O3—C27—C22 | 121.7 (4) |
C5—C4—C3 | 116.8 (4) | C26—C27—C22 | 120.8 (4) |
C6—C5—C4 | 121.1 (4) | N3—C28—C29 | 112.5 (4) |
C6—C5—H5 | 119.5 | N3—C28—H28A | 109.1 |
C4—C5—H5 | 119.5 | C29—C28—H28A | 109.1 |
C5—C6—C1 | 123.1 (3) | N3—C28—H28B | 109.1 |
C5—C6—O1 | 114.5 (3) | C29—C28—H28B | 109.1 |
C1—C6—O1 | 122.3 (3) | H28A—C28—H28B | 107.8 |
C12—C7—O1 | 122.4 (3) | C28—C29—H29A | 109.5 |
C12—C7—C8 | 124.0 (4) | C28—C29—H29B | 109.5 |
O1—C7—C8 | 113.7 (3) | H29A—C29—H29B | 109.5 |
C9—C8—C7 | 119.6 (4) | C28—C29—H29C | 109.5 |
C9—C8—H8 | 120.2 | H29A—C29—H29C | 109.5 |
C7—C8—H8 | 120.2 | H29B—C29—H29C | 109.5 |
N4—C9—C8 | 121.6 (4) | N3—C30—C31 | 114.3 (4) |
N4—C9—C10 | 120.9 (4) | N3—C30—H30A | 108.7 |
C8—C9—C10 | 117.5 (3) | C31—C30—H30A | 108.7 |
C11—C10—C9 | 121.1 (4) | N3—C30—H30B | 108.7 |
C11—C10—H10 | 119.5 | C31—C30—H30B | 108.7 |
C9—C10—H10 | 119.5 | H30A—C30—H30B | 107.6 |
C10—C11—C12 | 121.7 (4) | C30—C31—H31A | 109.5 |
C10—C11—H11 | 119.1 | C30—C31—H31B | 109.5 |
C12—C11—H11 | 119.1 | H31A—C31—H31B | 109.5 |
C7—C12—C11 | 116.0 (3) | C30—C31—H31C | 109.5 |
C7—C12—C13 | 122.8 (3) | H31A—C31—H31C | 109.5 |
C11—C12—C13 | 121.1 (3) | H31B—C31—H31C | 109.5 |
N1—C13—C12 | 111.8 (3) | N4—C32—C33 | 113.1 (5) |
N1—C13—C1 | 112.2 (3) | N4—C32—H32A | 109.0 |
C12—C13—C1 | 110.6 (3) | C33—C32—H32A | 109.0 |
N1—C13—C14 | 98.3 (3) | N4—C32—H32B | 109.0 |
C12—C13—C14 | 110.4 (3) | C33—C32—H32B | 109.0 |
C1—C13—C14 | 113.0 (3) | H32A—C32—H32B | 107.8 |
C19—C14—C15 | 120.7 (4) | C32—C33—H33A | 109.5 |
C19—C14—C13 | 112.3 (3) | C32—C33—H33B | 109.5 |
C15—C14—C13 | 127.0 (4) | H33A—C33—H33B | 109.5 |
C14—C15—C16 | 118.0 (4) | C32—C33—H33C | 109.5 |
C14—C15—H15 | 121.0 | H33A—C33—H33C | 109.5 |
C16—C15—H15 | 121.0 | H33B—C33—H33C | 109.5 |
C17—C16—C15 | 121.0 (4) | C35—C34—N4 | 104.2 (5) |
C17—C16—H16 | 119.5 | C35—C34—H34A | 110.9 |
C15—C16—H16 | 119.5 | N4—C34—H34A | 110.9 |
C18—C17—C16 | 121.0 (4) | C35—C34—H34B | 110.9 |
C18—C17—H17 | 119.5 | N4—C34—H34B | 110.9 |
C16—C17—H17 | 119.5 | H34A—C34—H34B | 108.9 |
C17—C18—C19 | 117.8 (4) | C34—C35—H35A | 109.5 |
C17—C18—H18 | 121.1 | C34—C35—H35B | 109.5 |
C19—C18—H18 | 121.1 | H35A—C35—H35B | 109.5 |
C14—C19—C18 | 121.5 (4) | C34—C35—H35C | 109.5 |
C14—C19—C20 | 108.6 (4) | H35A—C35—H35C | 109.5 |
C18—C19—C20 | 129.9 (4) | H35B—C35—H35C | 109.5 |
O2—C20—N1 | 123.7 (4) | N2—N1—C20 | 117.1 (3) |
O2—C20—C19 | 129.6 (4) | N2—N1—C13 | 127.6 (3) |
N1—C20—C19 | 106.7 (4) | C20—N1—C13 | 113.9 (3) |
N2—C21—C22 | 119.0 (4) | C21—N2—N1 | 121.1 (3) |
N2—C21—H21 | 120.5 | C4—N3—C30 | 121.8 (3) |
C22—C21—H21 | 120.5 | C4—N3—C28 | 121.7 (4) |
C27—C22—C23 | 117.4 (4) | C30—N3—C28 | 116.5 (3) |
C27—C22—C21 | 123.3 (4) | C9—N4—C32 | 122.9 (4) |
C23—C22—C21 | 119.3 (4) | C9—N4—C34 | 119.4 (4) |
C24—C23—C22 | 120.8 (4) | C32—N4—C34 | 117.3 (3) |
C24—C23—H23 | 119.6 | C6—O1—C7 | 119.0 (3) |
C22—C23—H23 | 119.6 | C27—O3—H3A | 109.5 |
C6—C1—C2—C3 | 0.4 (6) | C17—C18—C19—C20 | 179.6 (4) |
C13—C1—C2—C3 | −177.6 (4) | C14—C19—C20—O2 | −179.1 (4) |
C1—C2—C3—C4 | −0.3 (6) | C18—C19—C20—O2 | −0.7 (7) |
C2—C3—C4—N3 | 179.4 (4) | C14—C19—C20—N1 | −1.1 (4) |
C2—C3—C4—C5 | −0.2 (6) | C18—C19—C20—N1 | 177.4 (4) |
N3—C4—C5—C6 | −179.1 (3) | N2—C21—C22—C27 | 4.5 (5) |
C3—C4—C5—C6 | 0.5 (5) | N2—C21—C22—C23 | −177.2 (3) |
C4—C5—C6—C1 | −0.4 (6) | C27—C22—C23—C24 | 0.1 (6) |
C4—C5—C6—O1 | 179.5 (3) | C21—C22—C23—C24 | −178.3 (3) |
C2—C1—C6—C5 | 0.0 (5) | C22—C23—C24—C25 | 2.2 (6) |
C13—C1—C6—C5 | 178.0 (3) | C22—C23—C24—Cl1 | −178.6 (3) |
C2—C1—C6—O1 | −179.9 (3) | C23—C24—C25—C26 | −2.7 (7) |
C13—C1—C6—O1 | −1.9 (5) | Cl1—C24—C25—C26 | 178.1 (3) |
C12—C7—C8—C9 | −0.5 (6) | C24—C25—C26—C27 | 1.0 (7) |
O1—C7—C8—C9 | 179.6 (3) | C25—C26—C27—O3 | −178.7 (4) |
C7—C8—C9—N4 | 178.3 (4) | C25—C26—C27—C22 | 1.2 (6) |
C7—C8—C9—C10 | −1.0 (5) | C23—C22—C27—O3 | 178.2 (3) |
N4—C9—C10—C11 | −177.8 (4) | C21—C22—C27—O3 | −3.5 (6) |
C8—C9—C10—C11 | 1.5 (6) | C23—C22—C27—C26 | −1.7 (6) |
C9—C10—C11—C12 | −0.5 (6) | C21—C22—C27—C26 | 176.6 (4) |
O1—C7—C12—C11 | −178.6 (3) | O2—C20—N1—N2 | 8.8 (5) |
C8—C7—C12—C11 | 1.5 (5) | C19—C20—N1—N2 | −169.4 (3) |
O1—C7—C12—C13 | 4.9 (5) | O2—C20—N1—C13 | 176.5 (3) |
C8—C7—C12—C13 | −175.1 (3) | C19—C20—N1—C13 | −1.7 (4) |
C10—C11—C12—C7 | −0.9 (6) | C12—C13—N1—N2 | 53.6 (4) |
C10—C11—C12—C13 | 175.6 (3) | C1—C13—N1—N2 | −71.3 (4) |
C7—C12—C13—N1 | −136.2 (3) | C14—C13—N1—N2 | 169.6 (3) |
C11—C12—C13—N1 | 47.5 (5) | C12—C13—N1—C20 | −112.6 (3) |
C7—C12—C13—C1 | −10.4 (5) | C1—C13—N1—C20 | 122.5 (3) |
C11—C12—C13—C1 | 173.3 (3) | C14—C13—N1—C20 | 3.4 (3) |
C7—C12—C13—C14 | 115.4 (4) | C22—C21—N2—N1 | −177.3 (3) |
C11—C12—C13—C14 | −60.9 (4) | C20—N1—N2—C21 | 177.5 (3) |
C6—C1—C13—N1 | 134.4 (3) | C13—N1—N2—C21 | 11.7 (5) |
C2—C1—C13—N1 | −47.7 (4) | C5—C4—N3—C30 | 0.6 (6) |
C6—C1—C13—C12 | 8.9 (4) | C3—C4—N3—C30 | −179.0 (4) |
C2—C1—C13—C12 | −173.2 (3) | C5—C4—N3—C28 | −177.3 (4) |
C6—C1—C13—C14 | −115.5 (4) | C3—C4—N3—C28 | 3.1 (6) |
C2—C1—C13—C14 | 62.4 (4) | C31—C30—N3—C4 | −86.1 (4) |
N1—C13—C14—C19 | −4.0 (4) | C31—C30—N3—C28 | 91.8 (4) |
C12—C13—C14—C19 | 113.0 (3) | C29—C28—N3—C4 | −87.4 (5) |
C1—C13—C14—C19 | −122.6 (3) | C29—C28—N3—C30 | 94.6 (5) |
N1—C13—C14—C15 | 177.8 (4) | C8—C9—N4—C32 | 1.8 (7) |
C12—C13—C14—C15 | −65.2 (5) | C10—C9—N4—C32 | −178.9 (4) |
C1—C13—C14—C15 | 59.3 (5) | C8—C9—N4—C34 | −171.5 (4) |
C19—C14—C15—C16 | −2.3 (6) | C10—C9—N4—C34 | 7.8 (6) |
C13—C14—C15—C16 | 175.8 (3) | C33—C32—N4—C9 | −87.6 (6) |
C14—C15—C16—C17 | 0.7 (6) | C33—C32—N4—C34 | 85.8 (6) |
C15—C16—C17—C18 | 0.1 (7) | C35—C34—N4—C9 | −87.2 (6) |
C16—C17—C18—C19 | 0.6 (7) | C35—C34—N4—C32 | 99.2 (5) |
C15—C14—C19—C18 | 3.1 (6) | C5—C6—O1—C7 | 175.3 (3) |
C13—C14—C19—C18 | −175.2 (3) | C1—C6—O1—C7 | −4.9 (5) |
C15—C14—C19—C20 | −178.3 (3) | C12—C7—O1—C6 | 3.4 (5) |
C13—C14—C19—C20 | 3.4 (4) | C8—C7—O1—C6 | −176.7 (3) |
C17—C18—C19—C14 | −2.2 (6) |
Experimental details
Crystal data | |
Chemical formula | C35H35ClN4O3 |
Mr | 595.12 |
Crystal system, space group | Orthorhombic, Pca21 |
Temperature (K) | 296 |
a, b, c (Å) | 21.609 (9), 11.892 (5), 12.355 (5) |
V (Å3) | 3175 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.16 |
Crystal size (mm) | 0.35 × 0.32 × 0.29 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.946, 0.955 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16073, 5528, 2820 |
Rint | 0.079 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.088, 1.02 |
No. of reflections | 5528 |
No. of parameters | 394 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.25 |
Absolute structure | Flack (1983), 2521 Friedel pairs |
Absolute structure parameter | −0.05 (8) |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
The authors thank the Natural Science Foundation of the Education Department of Henan Province (2010B150029) and the Natural Science Foundation of Henan Province (082300420110) for support.
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.
Among many fluorescent compounds, rhodamine dyes are known to have excellent photophysical properties, and they are one of the most widely used fluorophores for labeling and sensing biomolecules. There are a few single-crystal reports on rhodamine derivatives bearing a lactam moiety (Xu et al., 2009; Kwon et al., 2005; Wu et al., 2007; Zhang et al., 2008; Tian et al., 2008; Deng et al., 2009). Detailed information on their molecular and crystal structures is necessary to understand their photophysical and photochemical properties.
In agreement with other reported models, (Xu et al., 2009; Wu et al., 2007; Zhang et al., 2008; Tian et al., 2008) the main skeleton of the molecule is formed by the xanthene ring and the spirolactam-ring. As shown in Figure 1, the atoms of the xanthene ring or the spirolactam-ring are both nearly planar and are almost perpendicular to each other. The dihedral angle between the xanthene and the spirolactam ring fragment mean planes is 87.9 (7)°. The dihedral angle between the xanthene mean plane and the 2-hydroxy-5-cholorobenzene ring is 79.1 (7)°.