Home Crystal structure of 3,6-di-2-pyridinyl-4-pyridazine carbonitrile, C15H9N5
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Crystal structure of 3,6-di-2-pyridinyl-4-pyridazine carbonitrile, C15H9N5

  • Joel M. Gichumbi , Holger B. Friedrich EMAIL logo and Bernard Omondi
Published/Copyright: May 16, 2016

Abstract

C15H9N5, monoclinic, P21/c (no. 14), a = 8.9817(4) Å, b = 11.5791(19) Å, c = 12.065(2) Å, β = 102.289(4)°, V = 1226.03(3) Å3, Z = 4, Rgt(F) = 0.0533, wRref(F2) = 0.1512, T = 173(2) K.

CCDC no.:: 1453551

The crystal structure is shown in the figure. 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:Yellow, rod, size 0.11×0.13×0.14 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.90 cm−1
Diffractometer, scan mode:Bruker Kappa Duo Apex II, φ and ω scans
2θmax:56.77°
N(hkl)measured, N(hkl)unique:9747, 3043
N(param)refined:181
Programs:SHELX [1], X-Seed [2], Bruker programs [3]
Table 2

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

AtomSitexyzUiso
H(1)4e0.38050.9085−0.02860.050
H(2)4e0.30320.92580.14230.050
H(3)4e0.38910.79060.28610.047
H(4)4e0.55130.64180.25300.042
H(7)4e0.64080.6412−0.10530.038
H(12)4e0.92490.25420.17060.049
H(13)4e1.08130.09650.15600.060
H(14)4e1.17040.0703−0.01180.053
H(15)4e1.09740.2009−0.15820.052
Table 3

Fractional atomic coordinate and displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
N(1)4e0.5055(2)0.7679(1)0.0078(1)0.0393(9)0.0412(9)0.0291(8)0.0050(7)0.0061(7)−0.0003(6)
N(2)4e0.7960(2)0.4876(2)−0.2766(1)0.068(1)0.052(1)0.0323(9)0.0076(9)0.0201(9)0.0039(8)
N(3)4e0.7971(2)0.4361(1)0.1249(1)0.044(1)0.0385(9)0.0271(8)0.0029(7)0.0100(7)0.0001(6)
N(4)4e0.7095(2)0.5236(1)0.1452(1)0.0419(9)0.0368(8)0.0262(8)0.0011(7)0.0113(7)0.0013(6)
N(5)4e0.9748(2)0.3041(1)−0.0821(1)0.044(1)0.044(1)0.0337(9)−0.0018(8)0.0112(7)0.0021(7)
C(1)4e0.4149(2)0.8530(2)0.0291(2)0.044(1)0.045(1)0.036(1)0.0094(9)0.0053(9)−0.0004(9)
C(2)4e0.3685(2)0.8644(2)0.1310(2)0.039(1)0.048(1)0.037(1)0.0075(9)0.0061(8)−0.0108(9)
C(3)4e0.4191(2)0.7851(2)0.2154(2)0.038(1)0.050(1)0.031(1)−0.0022(9)0.0110(8)−0.0110(8)
C(4)4e0.5142(2)0.6973(2)0.1958(2)0.039(1)0.040(1)0.0272(9)−0.0009(8)0.0092(8)−0.0024(7)
C(5)4e0.5546(2)0.6914(2)0.0909(1)0.0291(9)0.0329(9)0.0271(9)−0.0053(7)0.0065(7)−0.0064(7)
C(6)4e0.6524(2)0.5974(2)0.0628(1)0.030(1)0.0340(9)0.0232(8)−0.0058(7)0.0067(7)−0.0021(7)
C(7)4e0.6809(2)0.5871(2)−0.0475(1)0.037(1)0.0337(9)0.0244(8)−0.0020(8)0.0081(7)0.0000(7)
C(8)4e0.7703(2)0.4944(1)−0.0683(1)0.0301(9)0.0324(9)0.0247(8)−0.0084(7)0.0080(7)−0.0020(7)
C(9)4e0.7925(2)0.4834(2)−0.1824(2)0.041(1)0.034(1)0.0316(9)−0.0005(8)0.0124(8)−0.0001(7)
C(10)4e0.8286(2)0.4190(2)0.0218(1)0.030(1)0.0302(9)0.0289(9)−0.0058(7)0.0053(7)−0.0007(7)
C(11)4e0.9257(2)0.3175(1)0.0142(1)0.033(1)0.0301(9)0.0284(9)−0.0068(7)0.0055(7)−0.0044(7)
C(12)4e0.9624(2)0.2422(2)0.1036(2)0.047(1)0.049(1)0.0274(9)0.0089(9)0.0103(9)0.0014(8)
C(13)4e1.0541(3)0.1494(2)0.0949(2)0.059(2)0.053(1)0.038(1)0.012(1)0.009(1)0.0141(9)
C(14)4e1.1063(2)0.1337(2)−0.0038(2)0.046(1)0.039(1)0.049(1)0.0057(9)0.013(1)−0.0037(9)
C(15)4e1.0631(2)0.2122(2)−0.0897(2)0.045(1)0.052(1)0.036(1)−0.003(1)0.0148(9)−0.0043(9)

Source of material

The ligand was prepared using the method of Butte and Case [4, 5]. 3,6-di(2-pyridyl)tetrazine (1.0 g, 6.8 mmoles) and (1.1 g, 20.73 mmoles) of acrylonitrile were dissolved in 25 mL of toluene. The resulting mixture was refluxed overnight until the red color of the tetrazine disappeared. The solid residue which remained after removal of the solvent was recrystallized from ethanol to give the title compound as yellow needles. Crystals suitable for X-ray diffraction studies were grown by the solvent diffusion method, where solutions of the compound in dry dichloromethane were layered with a four fold excess of hexane and allowed to stand undisturbed in the dark at ambient temperature for 2 days.

Experimental details

All hydrogen atoms were placed in idealised positions and refined in riding models with Uiso assigned the values of 1.2 times those of their parent atoms and the distances of C—H were constrained to 0.95 Å for all the aromatic hydrogens.

Discussion

Pyridazines are heterocyclic compounds with an aromatic ring system containing two adjacent nitrogen atoms. These nitrogen atoms offer a unique chemistry as the nitrogen atoms interact with suitable substrates with acidic functionalities to generate novel supramolecular assemblies with exotic structures [69]. They also act as building blocks in several bioinorganic compounds and as ligands in the preparation of novel coordination complexes [7, 10]. Pyridazines are also known to exhibit versatile biological activities. The 3,6-di(2-pyridyl)pyridazines represent one of the most interesting ligand systems among the pyridazines. These compounds can act as metal coordinating ligands for copper, silver and nickel ions resulting in grid-like metal complexes [11, 12]. In addition, many binuclear metal complexes of these ligands with nickel, copper and platinum have been reported [4, 13].

Highly functionalized pyridazine are easily accessible via an inverse Diels-Alder reaction between the 1, 2, 4, 5-tetrazine and a wide variety of acetylenes, whereby the tetrazine acts as the electron deficient diene [4, 14]. The synthesis of 3,6-di(2-pyridyl)tetrazine and its utilization in inverse-type Diels-Alder reactions was first described by Butte and Case [5]. In continuation of that work other groups have reported similar cycloadditions to the 3,6-di(2-pyridyl)tetrazine, resulting in monosubstituted octyl, carboxy ethyl or tetrahydropyranyl diethyl ethers of methanol, hexanol and fullerenes [4, 15, 16].

The title compound was first reported by Butte and Case [7] but its crystal structure has not been elucidated until now. It crystallizes with one molecule in the asymmetric unit. The N4—N3 bond length is 1.337(2) Å, C5—N1 = 1.341(2) Å and C11—N5 = 1.336(2) Å and these are comparable to the bond lengths of similar reported molecules [10, 17]. The dihedral angles between the planes defined by N1, C1—C5 and N5, C11—C15 are of 5.47 (0.11)° and 6.96 (0.11)° showing that the planes are coplanar.

Acknowledgements:

We wish to extend our sincere thanks to the NRF, THRIP (Grant no. Tp 1208035643) and UKZN (URF) for financial support. J. G. thanks Prof. E. N. Njoka for his support. The authors also wish to thank Dr. Hung Su of the University of Cape Town for the assistance with the data collection and refinement. The authors thank the responsible editor for supplying the figure.

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Received: 2015-11-9
Accepted: 2016-2-16
Published Online: 2016-5-16
Published in Print: 2016-9-1

©2016 Joel M. Gichumbi et al., published by De Gruyter.

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

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  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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