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N,N'-Bis(6-methyl-2-pyrid-yl)oxamide.

ABSTRACT: In the crystal structure of the title compound, C(14)H(14)N(4)O(2), the mol-ecules are almost planar (mean deviation 0.028 Å) and a weak intra-molecular N-H⋯O hydrogen bond between the H atom bound to an oxamide N atom and a carbonyl O atom is found. The asymmetric unit consits of one half-mol-ecule which is located on a centre of inversion.

SUBMITTER: Cheng PC

PROVIDER: S-EPMC2971095 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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N,N'-Bis(6-methyl-2-pyrid-yl)oxamide.

Cheng Pei-Chi PC Wu Chia-Jun CJ Chen Jhy-Der JD

Acta crystallographica. Section E, Structure reports online 20091017 Pt 11

In the crystal structure of the title compound, C(14)H(14)N(4)O(2), the mol-ecules are almost planar (mean deviation 0.028 Å) and a weak intra-molecular N-H⋯O hydrogen bond between the H atom bound to an oxamide N atom and a carbonyl O atom is found. The asymmetric unit consits of one half-mol-ecule which is located on a centre of inversion. ...[more]

PMID: 21578329

Similar Datasets

A triclinic polymorph with Z = 3 of N,N'-bis-(2-pyrid-yl)oxamide.

Project description:The asymmetric unit of the title compound, C(12)H(10)N(4)O(2), contains three half-mol-ecules. Each half-mol-ecule is completed by crystallographic inversion symmetry. The title compound, (I), is a polymorph of the structure, (II), reported by Hsu & Chen [Eur. J. Inorg. Chem. (2004), 1488-1493]. In the original report, the compound crystallized in the tetra-gonal space group P[Formula: see text]2(1)c (Z = 8), whereas the structure reported here is triclinic (P[Formula: see text], Z = 3). In both forms, each oxamide mol-ecule is almost planar (with maximum deviations are 0.266 and 0.166 Å) and the O atoms are trans oriented. The principal difference between the two forms lies in the different hydrogen-bonding patterns. In (I), two N-H⋯O and one N-H⋯N hydrogen bonds link the mol-ecules, forming a two-dimensional network, whereas in (II) there are no classical hydrogen bonds to O atoms and only weak C-H⋯O inter-actions are found along with rings of N-H⋯N bonds.

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1,3-Bis[(6-methyl-2-pyrid-yl)meth-yl]imidazolium bromide.

Project description:The title compound, C(17)H(19)N(4) (+)·Br(-), is built up from 1,3-bis-[(6-methyl-2-pyridin-yl)meth-yl]imidazolium cations and bromide anions. Each of two 6-methyl-2-pyridyl rings is rotated out of the imidazole plane, making dihedral angles of 79.90 (9) and 86.40 (9)°. The packing is consolidated by aromatic π-π inter-actions between the pyridine rings of neighbouring mol-ecules [centroid-centroid distance = 3.554 (2) Å] and by weak C-H⋯N and C-H⋯Br hydrogen bonds.

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N,N-Bis(6-methyl-2-pyrid-yl)formamidine.

Project description:In the crystal structure of the title mol-ecule, C(13)H(14)N(4), the two pyridyl rings are not coplanar but twisted about the C-N bond with an inter-planar angle of 71.1 (1)°. In the crystal, the mol-ecules form dimers, situated on crystallographic centres of inversion, which are connected via a pair of N-H⋯N hydrogen bonds. C-H⋯π-electron ring inter-actions are also present in the crystal structure. The title mol-ecule adopts an s-cis-anti-s-cis conformation in the solid state.

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Crystal structure of N,N'-bis-(4-methyl-phen-yl)di-thio-oxamide.

Project description:Two half mol-ecules of the title compound, C16H16N2S2, are present in the asymmetric unit and both mol-ecules are completed by crystallographic inversion centers at the mid-points of the central C-C bonds: the lengths of these bonds [1.538 (5) and 1.533 (5) Å] indicate negligible electronic delocalization. The trans-di-thio-oxamide fragment in each mol-ecule is characterized by a pair of intra-molecular N-H⋯S hydrogen bonds. In the crystal, mol-ecules are linked by weak C-H..π inter-actions, generating a three-dimensional network.

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[Oxalylbis(aza-nedi-yl)]bis-{[amino-(2-pyrid-yl)methyl-ene]ammonium}.

Project description:The title compound, C(14)H(16)N(8)O(2) (2+)·2ClO(4) (-), was prepared by reaction of bis-[amino-(2-pyrid-yl)methyl-ene]oxalohydrazide with perchloric acid. The mol-ecular symmetry is C(i) and thus the asymmetric unit comprises one half-mol-ecule. The dihedral angle between the aromatic ring and the plane of the oxamide group is 70.8 (3)°. The perchlorate anions and the cations are connected by inter-molecular N-H⋯O hydrogen bonds.

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Bis(3-meth-oxy-6-methyl-2-pyrid-yl) ether.

Project description:In the mol-ecule of the title compound, C(14)H(16)N(2)O(3), the dihedral angle between the pyridyl rings is 87.74 (3)°. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into infinite zigzag chains.

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N,N'-Bis(pyridin-3-yl)oxamide.

Project description:The title mol-ecule, C12H10N4O2, located about an inversion centre, is roughly planar, with an r.m.s. deviation from the least-squares plane of all non-H atoms of 0.019 Å. In the crystal, N-H⋯N hydrogen bonds between the amide N-H group and the pyridine N atom connect the mol-ecules into a corrugated layer parallel to (10-1).

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Bis{2-meth-oxy-6-[(3-pyrid-yl)methyl-imino-meth-yl]phenolato}copper(II).

Project description:In the mononuclear title complex, [Cu(C(14)H(13)N(2)O(2))(2)], the Cu(II) atom lies on an inversion centre and adopts a square-planar coordination geometry. The dihedral angle formed by the pyridine and benzene rings is 74.61 (5)°. Intra-molecular C-H⋯O hydrogen bonds are present. The crystal structure is stabilized by weak aromatic π-π stacking inter-actions involving neighbouring pyridine rings [centroid-centroid distance = 3.853 (2) Å].

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3,4-Bis(2-pyrid-yl)-5-(3-pyrid-yl)-4H-1,2,4-triazole.

Project description:In the title mol-ecule, C(17)H(12)N(6), the 2-pyridyl rings in the 3- and 4-positions and the 3-pyridyl ring in the 5-position make dihedral angles of 29.78 (16), 67.06 (16) and 32.97 (16)°, respectively, with the triazole group. The dihedral angle between the two 2-pyridyl rings is 65.72 (15)°. The dihedral angles between the 3-pyridyl ring and the two 2-pyridyl rings in the 3- and 4-positions are 61.28 (15) and 63.11 (15)°, respectively. In the crystal, C-H⋯π and π-π inter-actions [centroid-centroid distance = 3.6248 (19) Å] link the mol-ecules, forming a two-dimensional network.

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4-Amino-3-methyl-benzoic acid-1,2-bis-(4-pyrid-yl)ethane (1/1).

Project description:In the crystal structure of the title 1:1 adduct, C(12)H(12)N(2)·C(8)H(9)NO(2), the 4-amino-3-methyl-benzoic acid mol-ecules and 1,2-bis-(4-pyrid-yl)ethane mol-ecules are linked by inter-molecular O-H⋯N, N-H⋯O and N-H⋯N hydrogen bonds, forming a two-dimensional supra-molecular network parallel to (001). In the 1,2-bis-(4-pyrid-yl)ethane mol-ecule, the two pyridine rings are twisted to each other by a dihedral angle of 12.12 (8)°. The non-H atoms of the 4-amino-3-methyl-benzoic acid mol-ecule are almost coplanar, the maximum atomic deviation being 0.029 (1) Å. Weak C-H⋯π inter-actions are present in the crystal structure.

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