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Crystal structure of (E)-2-(((6-bromopyridin-2-yl)methylene)amino)-3′,6′-bis(ethylamino)-2′,7′-dimethylspiro[isoindoline-1,9′-xanthen]-3-one—methanol (1:1), C32H30N5O2Br ⋅ CH4O

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Published/Copyright: March 28, 2019

Abstract

C33H34N5O3Br, triclinic, P1̄ (no. 2), a = 9.1179(2) Å, b = 9.3291(3) Å, c = 18.4706(6) Å, α = 91.187(3)°, β = 95.764(2)°, γ = 102.256(2)°, Z = 2, V = 1526.15(8) Å3, Rgt(F) = 0.0357, wRref(F2) = 0.0954, T = 105.7(5) K.

CCDC no.: 1892532

The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Yellow plate
Size:0.20 × 0.10 × 0.05 mm
Wavelength:Cu Kα radiation (1.54184 Å)
μ:2.17 mm−1
Diffractometer, scan mode:SuperNova, ω
θmax, completeness:71.4°, >99%
N(hkl)measured, N(hkl)unique, Rint:10106, 5746, 0.019
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 5452
N(param)refined:389
Programs:CrysAlisPRO [1], Olex2 [2], SHELX [3], [4]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
Br10.78841(3)0.30993(3)0.45262(2)0.03812(9)
O10.5079(2)0.92439(15)0.75648(9)0.0403(4)
O20.48305(14)0.23414(13)0.78652(7)0.0214(3)
O30.65957(15)1.03774(16)0.64014(9)0.0317(3)
H3A0.62670.98730.67320.047*
N10.67401(16)0.46551(17)0.55366(8)0.0192(3)
N20.55231(16)0.68183(16)0.68502(8)0.0165(3)
N30.49759(15)0.67403(15)0.75108(8)0.0146(3)
N40.99018(18)0.32581(18)0.89547(8)0.0205(3)
H41.066(3)0.378(3)0.8949(14)0.030(7)*
N5−0.01397(18)0.08987(18)0.66897(10)0.0279(4)
H5−0.09630.11370.65180.034*
C10.7342(2)0.4802(2)0.49153(10)0.0236(4)
C20.7627(2)0.6074(2)0.45338(10)0.0282(4)
H20.80610.61040.40980.034*
C30.7239(2)0.7297(2)0.48292(10)0.0269(4)
H30.74030.81770.45910.032*
C40.6602(2)0.7205(2)0.54830(10)0.0220(4)
H4A0.63330.80150.56910.026*
C50.63772(18)0.58638(19)0.58200(9)0.0171(3)
C60.57475(18)0.56734(18)0.65250(9)0.0160(3)
H60.55220.47560.67250.019*
C70.4831(2)0.80476(19)0.78312(11)0.0223(4)
C80.43612(19)0.76900(19)0.85567(10)0.0190(3)
C90.4092(2)0.8627(2)0.91038(11)0.0245(4)
H90.41480.96190.90300.029*
C100.3740(2)0.8026(2)0.97593(10)0.0249(4)
H100.35630.86231.01360.030*
C110.36478(19)0.6531(2)0.98620(10)0.0215(4)
H110.34090.61471.03060.026*
C120.39081(18)0.56050(19)0.93086(9)0.0169(3)
H120.38420.46090.93770.020*
C130.42680(17)0.62134(18)0.86546(9)0.0141(3)
C140.46751(18)0.54505(17)0.79891(8)0.0127(3)
C150.33898(18)0.42390(17)0.76589(8)0.0132(3)
C160.19806(18)0.45211(18)0.73991(9)0.0147(3)
H160.18470.54800.74330.018*
C170.07825(18)0.34380(19)0.70950(9)0.0156(3)
C180.0989(2)0.19716(19)0.70335(9)0.0189(3)
C190.2375(2)0.16709(19)0.73041(10)0.0196(4)
H190.25190.07150.72790.024*
C200.35380(19)0.27985(18)0.76104(9)0.0160(3)
C210.60718(18)0.33800(18)0.81394(9)0.0149(3)
C220.73331(19)0.28247(19)0.83740(9)0.0164(3)
H220.72890.18210.83350.020*
C230.86612(19)0.37787(19)0.86671(9)0.0166(3)
C240.87216(19)0.53128(19)0.87018(9)0.0172(3)
C250.74419(18)0.58040(18)0.84643(9)0.0156(3)
H250.74820.68080.84910.019*
C260.60813(18)0.48628(18)0.81841(8)0.0132(3)
C271.01381(19)0.6371(2)0.90126(11)0.0235(4)
H27A0.99780.73550.89960.035*
H27B1.09480.62860.87320.035*
H27C1.03930.61490.95080.035*
C28−0.06798(19)0.3804(2)0.67836(10)0.0212(4)
H28A−0.06400.48280.68770.032*
H28B−0.15010.32280.70080.032*
H28C−0.08290.35870.62680.032*
C290.9925(2)0.1710(2)0.89142(11)0.0259(4)
H29A0.97800.13610.84080.031*
H29B0.91030.11600.91580.031*
C301.1420(2)0.1454(3)0.92711(13)0.0354(5)
H30A1.22240.19280.90030.053*
H30B1.13900.04190.92720.053*
H30C1.15910.18530.97630.053*
C31−0.0024(3)−0.0619(2)0.65998(14)0.0384(5)
H31A0.0972−0.06450.64660.046*
H31B−0.0757−0.10890.62030.046*
C32−0.0286(3)−0.1485(3)0.72768(19)0.0579(8)
H32A−0.0159−0.24660.71890.087*
H32B−0.1292−0.15150.73960.087*
H32C0.0428−0.10210.76750.087*
C330.5438(2)1.0981(2)0.60476(12)0.0307(4)
H33A0.58531.16770.57070.046*
H33B0.49881.14660.64020.046*
H33C0.46831.02110.57930.046*

Source of material

All the solvents were of analytic grade. All starting materials were commercially available. The title compound was synthesized starting from rhodamine 6G hydrazide, which was obtained by following the synthetic procedure described in reference [5].

Rhodamine-6G hydrazide powder (2 mmol, 0.856 g) was dispersed in 20 mL absolute ethanol. 15 mL of an ethanol solution of 6-bromo-2-pyridinecarbaldehyde (2 mmol, 0.372 g) were added to the above dispersion. The reaction occurred immediately at the liquid-solid interface. After refluxing for 5 h under stirring, a light yellow precipitate appeared. The precipitate was filtered, washed 3 times with ethanol/water (1:1). Yield: ca 80%. The light yellow powder (0.05 mmol, 29.8 mg) was dissolved in methanol (15 mL) to give a light yellow solution which was left to evaporate slowly at room temperature. Light yellow crystals of the title compound were obtained after one week.

Experimental details

H atoms were added geometrically using riding models and refined isotropically. Their Uiso values were set to 1.2Ueq or 1.5Ueq of the parent atoms, as appropriate. The amine hydrogen atoms were initially freely refined. In a second step, after checking the geometry, one of them was treated as riding using the SHELXL AFIX 43 command.

Comment

Rhodamine derivatives have been widely studied as fluorescent probe and chemosensors [5], [6], [7] for their excellent spectroscopic properties [8], [9]. The title compound not only contains the xanthene fluorophore, but also has the ability to coordinate transition and rare-earth metals. So, it is in theory possible to obtain magnetic-fluorescent bifunctional complexes using this compound as a ligand. Multi-functional materials have attracted considerable attention in a variety of research fields [10], [11].

The asymmetric unit of the title compound consists of a rhodamine-based molecule and a methanol solvent molecule. The bond length of C6—N2 is 1.278(2) Å, which shows that the existence of Schiff base C=N. All bond lengths are within the expected range. Molecules of the rhodamine derivative are bridged via hydrogen bonding to methanol to form a one dimensional hydrogen-bonded chain, with methanol acting as a single hydrogen-bond donor and as a double acceptor. C—H⋯π and π–π contacts further stabilise the crystal structure.

Acknowledgements

This work was supported by the Doctoral Research Fund of Henan University of Chinese Medicine (No. BSJJ2015–26) and the key scientific research project of colleges and universities in Henan Province (19B350004).

References

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Received: 2018-11-13
Accepted: 2019-01-22
Published Online: 2019-03-28
Published in Print: 2019-06-26

© 2019 Ai-Ping Xing et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 Public License.

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  68. Crystal structure of (E)-N-((3R,5S,10S, 13S,14S,17S)-17-((S)-1-(dimethylamino)ethyl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl)-2-methylbut-2-enamide – water – methanol (1/1/1), C29H54N2O3
  69. Crystal structure of methyl 2-(4-(3-(2,4-difluorophenyl)pyrazolo[1,5-a]pyrimidin-6-yl)phenyl)acetate, C21H15F2N3O2
  70. Crystal structure of poly[triaqua-(μ4-benzene-1,3,5-tricarboxylato-κ5O1,O2:O3:O4:O5)-(μ2-5-(3-pyridyl)tetrazolato-κ2N1:N3)dizinc(II)], C15H13N5O9Zn2
  71. Crystal structure of N-(3-methylphenyl)(propan-2-yloxy)carbothioamide, C11H15NOS
  72. Crystal structure of poly[(μ2-1,3-bis(imidazol-1-ylmethyl)benzene-κ2N:N′)(nitrato-κ1O)cadmium(II)] — water (2/1), C28H32CdN10O7
  73. Crystal structure of 4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, C8H7N3S
  74. Crystal structure of benzyltrichloridobis(1H-pyrazole-κ2N)tin(IV), C13H15Cl3N4Sn
  75. Crystal structure of chlorido-4-fluorobenzyl-bis(2-methylquinolin-8-olato-κ2N,O)tin(IV), C27H22ClFN2O2Sn
  76. Crystal structure of tetrakis(O,O′-diisopropyldithiophosphato-κ2S,S′)-(μ2-1,2-bis(4-pyridylmethylene)hydrazine-κ2N:N′)zinc(II), C36H66N4O8P4S8Zn2
  77. Crystal structure of tetrabutylammonium 4,4-oxydibenzoate – boric acid – water (1/2/6) C46H98B2N2O17
  78. Redetermination of the crystal structure of catena-poly[[tribenzyltin(IV)]-(μ2-pyridine-4-carboxylato-κ2N:O)], C27H25NO2Sn
  79. The synthysis and crystal structure of cyclohexyl 5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-((trifluoromethyl)sulfinyl)-1H-pyrazole-3-carboxylate, C18H15N3Cl2F6O3S
  80. The crystal structure of 5,7-bis(2-hydroxyethoxy)-2-phenyl-4H-chromen-4-one, C19H18O6
  81. Synthesis and crystal structure of (±)-Ethyl 5′-(difluoromethyl)-2-oxo-4′,5′-dihydrospiro[indoline-3,3′-pyrazole]-4′-carboxylate, C14H13F2N3O3
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