Home Crystal structure of (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol, C15H20ClN3O
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Crystal structure of (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol, C15H20ClN3O

  • Xiong Wan-Ming , Kong Juan-Hua , Chen Jing , Chen Jin-Zhu and Nie Xu-Liang EMAIL logo
Published/Copyright: April 21, 2016

Abstract

C15H20ClN3O, monoclinic, C2/c (no. 15), a = 19.300(2) Å, b = 10.8262(11) Å, c = 15.4282(16) Å, β = 100.457(4)°, V = 3170.0(6) Å3, Z = 8, Rgt(F) = 0.0409, wRref(F2) = 0.1150, T = 296(2) K.

CCDC no.:: 831500

Tables 13 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Colorless, block, size 0.12×0.18×0.22 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:2.41 cm−1
Diffractometer, scan mode:Bruker APEX-II, φ and ω scans
2θmax:51°
N(hkl)measured, N(hkl)unique:10442, 2954
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2370
N(param)refined:193
Programs:Bruker programs [13], SHELX [14]
Table 2

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

AtomSitexyzUiso
H(1A)*8f0.732(2)1.040(3)0.228(2)0.059(7)
H(1B)*8f0.735(2)0.991(3)0.343(2)0.059(7)
H(2)8f0.97060.60860.07790.095
H(3)8f0.88710.64810.16390.080
H(5)8f0.93441.00600.16660.081
H(6)8f1.01920.96700.08260.093
H(7A)8f0.85580.93640.25830.068
H(7B)8f0.85390.79510.27970.068
H(8)8f0.76400.76380.15780.053
H(11)8f0.73300.81320.29340.059
H(13A)8f0.65890.65650.19380.121
H(13B)8f0.64870.72770.10390.121
H(13C)8f0.58320.69610.14690.121
H(14A)8f0.55590.81590.27140.140
H(14B)8f0.61100.90990.32110.140
H(14C)8f0.62670.76780.32740.140
H(15A)8f0.62460.94510.09420.120
H(15B)8f0.61131.02100.17620.120
H(15C)8f0.55500.92540.13140.120
H(3N)*8f0.74221.0094−0.08540.087
H(5N)*8f0.76821.10000.16020.066
H(2N)*8f0.75100.81990.00150.074
H(4N)*8f0.75281.18290.01610.076

*Disordered, occupancy factor: 0.5.

Table 3

Fractional coordinates and atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
Cl(1)8f1.06723(4)0.75489(9)0.01038(5)0.0850(5)0.2055(9)0.0980(5)0.0338(5)0.0474(4)0.0180(5)
O(1)8f0.72761(7)0.9905(1)0.27931(8)0.0803(9)0.0594(8)0.0460(7)−0.0025(6)0.0202(6)−0.0079(6)
N(1)8f0.76164(7)0.9333(1)0.10703(8)0.0559(8)0.0340(7)0.0414(7)0.0008(5)0.0073(6)0.0002(5)
C(1)8f1.0026(1)0.7849(3)0.0729(1)0.052(1)0.117(2)0.056(1)0.016(1)0.0116(9)0.014(1)
C(2)8f0.9636(1)0.6887(2)0.0963(2)0.073(1)0.081(1)0.085(2)0.027(1)0.020(1)0.006(1)
C(3)8f0.9136(1)0.7129(2)0.1477(1)0.063(1)0.062(1)0.079(1)0.0104(9)0.019(1)0.014(1)
C(4)8f0.90202(8)0.8310(2)0.1755(1)0.0460(9)0.059(1)0.0494(9)0.0036(8)0.0018(7)0.0066(8)
C(5)8f0.9418(1)0.9254(2)0.1495(1)0.068(1)0.067(1)0.067(1)−0.0075(9)0.011(1)0.001(1)
C(6)8f0.9924(1)0.9026(2)0.0989(1)0.067(1)0.099(2)0.069(1)−0.015(1)0.015(1)0.016(1)
C(7)8f0.84778(9)0.8550(2)0.2322(1)0.0528(9)0.066(1)0.0479(9)0.0039(8)0.0031(8)0.0023(8)
C(8)8f0.77168(8)0.8477(1)0.1816(1)0.0515(9)0.0384(8)0.0423(8)0.0024(7)0.0053(7)0.0041(7)
C(11)8f0.71888(9)0.8695(2)0.2436(1)0.0536(9)0.0478(9)0.0451(9)0.0028(7)0.0089(7)0.0077(7)
C(12)8f0.64056(9)0.8415(2)0.2079(1)0.0487(9)0.058(1)0.069(1)0.0055(8)0.0077(8)0.0114(9)
C(13)8f0.6321(1)0.7192(2)0.1586(2)0.060(1)0.064(1)0.111(2)−0.008(1)−0.005(1)0.004(1)
C(14)8f0.6052(1)0.8330(3)0.2897(2)0.060(1)0.124(2)0.100(2)0.001(1)0.030(1)0.023(2)
C(15)8f0.6045(1)0.9427(2)0.1467(2)0.063(1)0.076(1)0.094(2)0.019(1)−0.001(1)0.018(1)
N(2N)*8f0.7532(1)0.9002(2)0.0232(1)0.090(1)0.0489(9)0.0458(9)0.0038(8)0.0106(8)−0.0107(7)
C(3N)*8f0.7485(1)1.0043(2)−0.0243(1)0.109(2)0.058(1)0.053(1)0.004(1)0.017(1)−0.0012(9)
N(4N)*8f0.7544(1)1.0998(1)0.0318(1)0.099(1)0.0425(9)0.0502(9)0.0012(8)0.0200(9)0.0105(7)
N(5N)*8f0.76289(9)1.0570(1)0.1126(1)0.088(1)0.0361(8)0.0426(8)−0.0036(7)0.0143(8)−0.0022(6)
C(2N)*8f0.7532(1)0.9002(2)0.0232(1)0.090(1)0.0489(9)0.0458(9)0.0038(8)0.0106(8)−0.0107(7)
N(3N)*8f0.7485(1)1.0043(2)−0.0243(1)0.109(2)0.058(1)0.053(1)0.004(1)0.017(1)−0.0012(9)
C(4N)*8f0.7544(1)1.0998(1)0.0318(1)0.099(1)0.0425(9)0.0502(9)0.0012(8)0.0200(9)0.0105(7)
C(5N)*8f0.76289(9)1.0570(1)0.1126(1)0.088(1)0.0361(8)0.0426(8)−0.0036(7)0.0143(8)−0.0022(6)

*Disordered, occupancy factor: 0.5.

Source of material

All chemicals were obtained from commercial sources and used without further purification. The synthesis of paclobutrazol was carried out using a modified Liao reaction [9]. A 50 mL flask was charged with (2RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-one (6.24 g, 1 mmol), polyethylene glycol (0.01 g, 0.05 mmol) and methanol (10 mL). KBH4 (0.1 g, 1.8 mmol) was added to the solution in batches under stirring. The mixture were then heated to reflux for 1 h. The resulting solution was concentrated to dryness under reduced pressure. The dark-brown crude product was then treated with hydrochloric acid (1 mol/L). A white product was obtained. Paclobutrazol was recrystallized from ethanol, and crystals were obtained by slow concentration of a water/ethanol solution. M.P.: 162–163°C. Anal. Calcd. for C15H20ClN3O (%) (Mr = 326.22): C, 62.32; H, 6.86; N, 14.30. Found (%): C, 62.28; H, 6.91; N, 14.28.

Experimental details

All carbon and nitrogen bonded H atoms were included in calculated positions and refined as riding atoms, with C—H = 0.93–0.96 Å and N—H = 0.86–0.89 Å, with Uiso(H) = 1.5 Ueq(C) for methyl H atoms and 1.2 Ueq(C) for all other H atoms. The structure shows a disorder: Four positions of the triazol moiety are occupied with carbon and nitrogen in a 1:1 ratio. Consequently also the neighboring oxygen bonded hydrogen atom is disordered over two positions (cf. the figure).

Discussion

Paclobutrazol [PP333, (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol] is a triazole pesticide. Paclobutrazol is type plant growth regulator which inhibits biosynthesis of gibberellin and is involved in reducing abscisic acid, ethylene and indole-3-acetic acid while increasing cytokinin levels [1]. Thereby it can slowing vegetative growth inducing formation of flower buds, increasing flower tolerance to frost and producing better fruit quality in different crops [27]. It can be absorbed through the stem, the leaves, or the roots, which means it can be applied by spraying, or as a soil treatment. It is also known that it protects plants against abiotic stresses. Because of its strong biological activities and its wide applications, the synthesis of paclobutrazol and its derivatives have attracted much attentions [810]. Recently, our group focused on the construction of coordination polymers with triazole pesticide and its antimicrobial activitity [112]. In this paper, we report the crystal structure of paclobutrazol. The molecular structure of the title compound is shown in the figure, the dihedral angle between the plane of the ring defined by atoms N1/N2N/C3N/N4N/C5N and the C1-C6 phenyl ring is 53.91(9)°. In the crystal, an intermolecular O—H⋯N hydrogen bonds between the O atom of hydroxy and the N atom of triazole ring link the molecules into one-dimensional chains. In the figure both parts of the disordered motif is shown. The disorder can be understood a superimposition of two triazolyl groups rotated by 180° about the N1—C8 bond.

Award Identifier / Grant number: No.51306081

Funding statement: This work was supported by the Research Foundation of Educational Department of Jiangxi Province [GJJ13261] and the National Natural Science Foundation of China (No.51306081). X-ray data were collected at Instrumental Analysis Center Nanchang Hangkong University, Nanchang, 330063, People’s Republic of China. The authors thank the responsible editor for supplying the figure and the help with the refinement of the disorder.

Acknowledgements:

This work was supported by the Research Foundation of Educational Department of Jiangxi Province [GJJ13261] and the National Natural Science Foundation of China (No.51306081). X-ray data were collected at Instrumental Analysis Center Nanchang Hangkong University, Nanchang, 330063, People’s Republic of China. The authors thank the responsible editor for supplying the figure and the help with the refinement of the disorder.

References

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Received: 2016-3-13
Accepted: 2016-3-31
Published Online: 2016-4-21
Published in Print: 2016-9-1

©2016 Xiong Wan-Ming et al., published by De Gruyter.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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  54. Crystal structure of N′-(4-nitrobenzylidene)-5-phenyl-1H-pyrazole-3-carbohydrazide, C17H13N5O3
  55. Crystal structure of 5-((4-bromophenyl)(2-hydroxy-6-oxocyclohex-1-en-1-yl)methyl)-6-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C19H19BrN2O5
  56. Crystal structure of 3-(((cyclohexyl(phenyl)methylidene)amino)oxy)-2-hydroxy-N-(propan-2-yl)propan-1-aminium chloride, C19H31ClN2O2
  57. Crystal structure of 6-hydroxy-5-((2-hydroxy-6-oxocyclohex-1-en-1-yl)(phenyl)methyl)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C19H20N2O5
  58. Crystal structure of 2-(4-(4-bromophenyl)thiazol-2-yl)isoindoline-1,3-dione, C17H9BrN2O2S
  59. Crystal structure of 2-(4-methylbenzoyl)pyrene, C24H16O
  60. Crystal structure of N-(5-bromo-4-(p-tolyl)thiazol-2-yl)-4-chlorobutanamide, C14H14BrClN2OS
  61. Crystal structure of 4,5-diphenylthiazol-2-amine, C15H12N2S
  62. Crystal structure of poly[bis(μ2-4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoato-κ3N:O,O′)-lead(II)], C28H18O4N8Pb
  63. Crystal structure of (Z)-4-(4-oxopent-2-en-2-ylamino)benzenesulfonamide, C11H14N2O3S
  64. Crystal structure of poly[(μ2-2-methyl-1-(4-(2-methyl-2H-benzo[d] imidazol-1(7aH)-yl)butyl)-1H-benzo[d]imidazole-κ2N:N′)bis(μ3-5-tert-butylbenzene-1,3-dicarboxylato-κ4O:O,O′:O′′,O′′′)dicadmium(II)] tetrahydrate, C44H54Cd2N4O12
  65. Crystal structure of catena-poly-[aqua(μ2-4,4′-bipyridine-κ2N:N′)bis(3′,5,5′-tricarboxybiphenyl-2-carboxylato-κ2O,O′)cadmium(II)], C42H28N2O17Cd
  66. Crystal structure of (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol, C15H20ClN3O
  67. Crystal structure of N′-(4-(dimethylamino)benzylidene)-5-phenyl-1H-pyrazole-3-carbohydrazide, C19H19N5O
  68. Crystal structure of 3-(benzofuran-2-yl)-5-(4-fluorophenyl)-4,5-dihydro-1Hpyrazole-1-carbothioamide, C18H14FN3OS
  69. Crystal structure of ent-1β-acetoxy-7α,14α-di-hydroxy-7β,20-epoxykaur-16-en-15-one, C22H30O6
  70. Crystal structure of 1α,7β-dihydroxy-11β-acetoxy-ent-7β,20-epoxykaur-16-en-15-one, C22H30O6
  71. Crystal structure of 7β,14β,15β-trihydroxy-1α-acetoxy-7α,20-epoxy-ent-kaurane, C22H32O6
  72. Crystal structure of ent-1β,7α,11α-trihydroxy-7β,20-epoxykaur-16-en-15-one, C20H28O5
  73. Crystal structure of poly-[tetraaquabis(μ8-benzene-1,2,4,5-tetracarboxylato-1κ3O4:O6:O8:2κ4O2:O2:O5:O5:3κ4O1:O3:O5:O7)(di-μ3-hydroxido)-pentazinc(II)] decahydrate, C20H34O32Zn5
  74. Crystal structure of 1-(4-methylthiazol-2-yl)-3-propylthiourea, C8H13N3S2
  75. Crystal structure of 2-((dimethylamino)methylene)-5,5-Dimethylcyclohexane-1,3-dione, C11H17NO2
  76. Crystal structure of poly[1,4-bis(2-methylbenzimidazol)butane-κ2N:N′)bis(4,4′-oxybis(benzoato-κ4O,O′:O′′,O′′′)dicadmium] monohydrate, C48H38Cd2N4O10
  77. Crystal structure of 2-(3-(benzofuran-2-yl)-5-(4-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-(4-chlorophenyl)thiazole, C26H17ClFN3OS
  78. Crystal structure of bis(μ3-isophthalato-κ3O:O′:O′′)(μ2-1,4-\ bis((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)benzene-κ2N:N′)dizinc(II), C22H19N2O4Zn
  79. Crystal structure of poly[bis(adipate-κ4O,O′:O′′, O′′′)(1,4-bis(2-methyl-1H-benzo[d]imidazol-1-yl)benzene-κ2N:N′)dizinc(II), C36H38N4O8Zn2
  80. Crystal structure of N-(2-(2-oxoindolin-4-yl)ethyl)-N-propylpropan-1-aminium tetraphenylborate, C40H45BN2O
  81. Crystal structure of 1-(2,3-dihydro-4-methyl-3-phenyl-2-thioxothiazol-5-yl)-1-ethanone, C12H11NOS2
  82. Crystal structure of 3-(adamantan-1-yl)-1-[(4-benzylpiperazin-1-yl)methyl]-4-[(E)-(2,6-difluorobenzylidene)amino]-1H-1,2,4-triazole-5(4H)-thione, C31H36F2N6S
  83. Crystal structure of 6-(4-chlorophenyl)-3-(thiophen-2-yl)-[1,2,4]triazolo[3,4-b][1,3,4]-thiadiazole, C13H7ClN4S2
  84. Crystal structure of bis(ethanaminium) poly[bis(hexaselenido-κ2Se1,Se6)palladate(II)], C4H16N2PdSe12
  85. Crystal structure of 2-(3-(benzofuran-2-yl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-phenylthiazole, C26H19N3OS
  86. Crystal structure of poly-[bis(μ3-5-hydroxyisophtalato-κ3O:O′:O′′)(μ2-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)dizinc(II)], C40H30N4O5Zn2
  87. Crystal structure of poly-[(μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ4-2,2′-(1,3-phenylene)diacetate-κ4O:O′:O′′:O′′′)dizinc(II)], C44H38N4O8Zn2
  88. Crystal structure of 5,17-bis-cyano-25,26,27,28-tetrapropyloxy-calix[4]arene, C42H46N2O4
  89. Crystal structure of poly-[μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ3-5-hydroxyisophthalate(2–)-κ3O,O′:O′′)dicadmium(II)] monohydrate, C64H54N8O11Cd2
  90. Crystal structure of poly-[μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ4-4,4′-sulfonyldibenzoato-κ4O:O′:O′′:O′′′)dicadmium(II)] monohydrate, C52H42N4O14Cd2
  91. Crystal structure of poly-[bis(μ4-adipato-κ4O:O′:O′′:O′′′)(μ2-1,4-bis((2-ethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene-κ2N:N′)dizinc(II)], C38H42N4O8Zn2
  92. Crystal structure of (2-(2-chlorophenyl)-5-methyl-1,3-dioxan-5-yl)methanol, C12H15ClO3
  93. Crystal structure of 2-(4-Bromophenyl)-5-ethyl-1,3-dioxane-5-carboxylic acid, C13H15BrO4
  94. Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C13H17BrO3
  95. Crystal structure of 3-((1,3,5,7-tetraoxo-6-(pyridin-3-ylmethyl)-3,3a,4,4a,5,6,7,7a,8,8a-decahydro-4,8-ethenopyrrolo[3,4-f]isoindol-2(1H)-yl)methyl)pyridin-1-ium-κN-trichloridocobalt(II) hemihydrate, C24H22Cl3CoN4O4.5
  96. Crystal structure of 4-chloro-4′,6′-dichloro-2,2′-[propane-1,3-diyldioxybis(nitrilomethylidyne)]-diphenol, C17H14Cl3N2O4
  97. Crystal structure of 2-amino-4-(3-trifluoromethylphenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C17H13F3N2O2
  98. Crystal structure of bis(benzoato-κO)bis(4,4′-((1H-1,2,4-triazol-1-yl)methylene)dibenzonitrile-κN)zinc(II), C48H32N10O4Zn
  99. Crystal structure of 3-methyl-2H-chromen-2-one, C10H8O2
  100. Crystal structure of catena-poly-[aqua-(2-carboxy-5-(3-carboxy-5-carboxylatophenoxy)benzoato-κO)(μ2-4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl-κ2N:N′)cobalt(II)], C34H24N4O10Co
  101. Crystal structure of 4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl, C36H28N8
  102. Crystal structure of 1-(3-chloropropyl)piperidin-1-ium tetraphenylborate, C32H37BClN
  103. Crystal structure of dimethyl 5-(benzylamino)isophthalate, C17H17NO4
  104. Crystal structure of dimethyl 5-(dibenzylamino)isophthalate, C24H23NO4
  105. Crystal structure of N-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioamide, C21H29N3S
  106. Crystal structure of (2,2′(cyclohexane-1,2-diylbis(nitrilo(E)methylylidene))diphenolato-κ4O,O′,N,N′)dimethanolmanganese(III) bromide, C22H28BrMnN2O4
  107. Crystal structure of 3,5,7-tris(morpholinomethyl)tropolone·0.67 hydrate, C22H33N3O5·0.67H2O
  108. Crystal structure of biphenyl-2,3′,5,5′-tetracarboxylic acid – 4,4′-biphenyl-4,4′-diyldipyridine (3/2), C49H34N3O8
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