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Crystal structure of 4,4'-dimeth-oxy-2,2'-bi-pyridine.

ABSTRACT: In the title compound, C12H12N2O2, the dihedral angle between the planes of the two pyridine rings is 5.8?(1)°. Neighbouring mol-ecules are linked via C(Me)-H?N inter-actions, generating a two-dimensional sheet structure; C-H?? inter-actions further link the mol-ecules into a three-dimensional network. An overlapped arrangement of parallel pyridine rings in neighbouring mol-ecules [centroid-to-centroid distance = 3.6655?(15)?Å] is observed in the crystal structure.

SUBMITTER: Kusano Y

PROVIDER: S-EPMC4571430 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature

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Crystal structure of 4,4'-dimeth-oxy-2,2'-bi-pyridine.

Kusano Yukiko Y Ohno Keiji K Fujihara Takashi T

Acta crystallographica. Section E, Crystallographic communications 20150731 Pt 8

In the title compound, C12H12N2O2, the dihedral angle between the planes of the two pyridine rings is 5.8 (1)°. Neighbouring mol-ecules are linked via C(Me)-H⋯N inter-actions, generating a two-dimensional sheet structure; C-H⋯π inter-actions further link the mol-ecules into a three-dimensional network. An overlapped arrangement of parallel pyridine rings in neighbouring mol-ecules [centroid-to-centroid distance = 3.6655 (15) Å] is observed in the crystal structure. ...[more]

PMID: 26396830

Similar Datasets

Synthesis, characterization, and crystal structure of aqua-bis-(4,4'-dimeth-oxy-2,2'-bi-pyridine)[μ-(2<i>R</i>,3<i>R</i>)-tartrato(4-)]dicopper(II) octa-hydrate.

Project description:Typical electroless copper baths (ECBs), which are used to chemically deposit copper on printed circuit boards, consist of an aqueous alkali hydroxide solution, a copper(II) salt, formaldehyde as reducing agent, an l-(+)-tartrate as complexing agent, and a 2,2'-bi-pyridine derivative as stabilizer. Actual speciation and reactivity are, however, largely unknown. Herein, we report on the synthesis and crystal structure of aqua-1κO-bis-(4,4'-dimeth-oxy-2,2'-bi-pyri-dine)-1κ2 N,N';2κ2 N,N'-[μ-(2R,3R)-2,3-dioxidosuccinato-1κ2 O 1,O 2:2κ2 O 3,O 4]dicopper(II) octa-hydrate, [Cu2(C12H12N2O2)2(C4H2O6)(H2O)]·8H2O, from an ECB mock-up. The title compound crystallizes in the Sohncke group P21 with one chiral dinuclear complex and eight mol-ecules of hydrate water in the asymmetric unit. The expected retention of the tartrato ligand's absolute configuration was confirmed via determination of the absolute structure. The complex mol-ecules exhibit an ansa-like structure with two planar, nearly parallel bi-pyridine ligands, each bound to a copper atom that is connected to the other by a bridging tartrato 'handle'. The complex and water mol-ecules give rise to a layered supra-molecular structure dominated by alternating π stacks and hydrogen bonds. The understanding of structures ex situ is a first step on the way to prolonged stability and improved coating behavior of ECBs.

| S-EPMC6659323 | biostudies-literature

Crystal structure of [tris-(4,4'-bi-pyridine)]-diium bis-(1,1,3,3-tetra-cyano-2-eth-oxy-propenide) trihydrate.

Project description:The title hydrated salt, C30H26N62+·2C9H5N4O-·3H2O, was obtained as an unexpected product from the hydro-thermal reaction between potassium 1,1,3,3-tetra-cyano-2-eth-oxy-propenide, 4,4'-bi-pyridine and iron(II) sulfate hepta-hydrate. The cation lies across a twofold rotation axis in the space group I2/a with the other components all in general positions. In the cation, the H atom linking the pyridine units is disordered over two adjacent sites having occupancies of 0.66 (4) and 0.36 (4), i.e. as N-H⋯N and N⋯H-N. The water mol-ecules of crystallization are each disordered over two sets of atomic sites, having occupancies of 0.522 (6) and 0.478 (6) for one, and 0.34 (3) and 0.16 (3) for the other, and it was not possible to reliably locate the H atoms associated with these partial-occupancy sites. In the crystal, four independent C-H⋯N hydrogen bonds link the ionic components into a three-dimensional network.

| S-EPMC5120698 | biostudies-literature

Crystal structure of tris-(2,2'-bi-pyridine)-cobalt(II) bis-(1,1,3,3-tetra-cyano-2-eth-oxy-propenide).

Project description:In the title compound, [Co(C10H8N2)3](C9H5N4O)2, the tris-(2,2'-bi-pyridine)-cobalt(II) dication lies across a twofold rotation axes in the space group C2/c. The N atoms of the three bi-pyridine ligands form a distorted octa-hedron around the cobalt ion. All the N atoms of the polynitrile 1,1,3,3-tetra-cyano-2-eth-oxy-propenide anions participate in C-H?N hydrogen bonds ensuring crystal cohesion and forming a three-dimensional structure. The structure is further stabilized by C-H??(cation) and anion??(cation) inter-actions.

| S-EPMC6362655 | biostudies-literature

Crystal structure of catena-poly[[chlorido-(4,4'-dimethyl-2,2'-bi-pyridine-κ(2) N,N')copper(II)]-μ-chlorido].

Project description:The title compound, [CuCl2(C12H12N2)] n , was obtained via a DMSO-mediated dehydration of Cu(4,4'-dimethyl-2,2'-bi-pyridine)-copper(II)·0.25H2O. The central Cu(II) atom is coordinated in a distorted trigonal-bipyramidal geometry by two N atoms of a chelating 4,4'-dimethyl-2,2'-bi-pyridine ligand [average Cu-N = 2.03 (3) Å] and three Cl atoms, one terminal with a short Cu-Cl bond of 2.2506 (10) Å, and two symmetry-equivalent and bridging bonds. The bridging Cl atom links the Cu(II) ions into chains parallel to [001] via one medium and one long Cu-Cl bond [2.3320 (10) and 2.5623 (9) Å]. The structure displays both inter- and intra-molecular C-H⋯Cl hydrogen bonding.

| S-EPMC4459376 | biostudies-literature

4,4'-Dimeth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphenol.

Project description:In the title compound, C(21)H(26)N(2)O(4), the dihedral angle between the substituted benzene rings is 30.47 (15) °. Two strong intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs.

| S-EPMC3052006 | biostudies-literature

Crystal structure of 2,2'-bi-pyridine-1,1'-diium tetra-chlorido-zincate.

Project description:In the crystal structure of the title salt, (C10H10N2)[ZnCl4], the bi-pyridine-diium dication is not planar, with a dihedral angle of 37.21 (9)° between the planes of the two pyridine rings. In the crystal, the slightly distorted [ZnCl4](2-) anions are packed into rods parallel to [001], with the organic cations arranged in corrugated layers parallel to (100). Cations and anions are linked through N-H⋯Cl hydrogen bonds, forming chains parallel to [20-1]. Additional C-H⋯Cl inter-actions consolidate the crystal packing.

| S-EPMC4350760 | biostudies-literature

4,4'-Dimeth-oxy-2,2'-[(butane-1,4-diyldi-oxy)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The title Schiff base bis-oxime compound, C(20)H(24)N(2)O(6), lies across an inversion centre and adopts an E configuration with respect to the C=N bond. In the mol-ecule, the oxime group is roughly coplanar with the benzene ring, forming a dihedral angle of 1.77?(2)°. An intra-molecular O-H?N hydrogen bond forms a six-membered ring with an S(6) motif. Weak inter-molecular C-H?O hydrogen bonding is present in the crystal structure.

| S-EPMC3009145 | biostudies-literature

Crystal structure of bis-(2,2'-bi-pyridine-κ(2) N,N')bis-(thio-cyanato-κN)mang-anese(II) 2,2'-bi-pyridine monosolvate.

Project description:In the crystal structure of the mononuclear title compound, [Mn(NCS)2(C10H8N2)2]·C10H8N2, the Mn(II) cation is coordin-ated in an all-cis configuration by two N-bound thio-cyanate anions and two 2,2'-bi-pyridine ligands within a slightly distorted octa-hedral environment. The asymmetric unit consists of one Mn(II) cation, two thio-cyanate anions and two 2,2'-bi-pyridine ligands, as well as two non-coordinating 2,2'-bi-pyridine ligands that are each located on centres of inversion. In the crystal structure, the discrete [Mn(NCS)2(C10H8N2)2] complex mol-ecules are arranged in such a way that cavities are formed, in which the solvent 2,2'-bi-pyridine mol-ecules are located. Apart from van der Waals forces, there are no remarkable inter-molecular inter-actions present in the crystal structure.

| S-EPMC4331911 | biostudies-literature

Crystal structure of poly[[(2,2'-bi-pyridine)manganese(II)]-di-?-thio-cyanato].

Project description:In the crystal structure of the polymeric title compound, [Mn(NCS)2(C10H8N2)] n , the Mn(II) cations are coordinated by one chelating 2,2'-bi-pyridine ligand and four thio-cyanate anions (two N- and two S-coordinating), forming a distorted [MnN4S2] octa-hedron. The asymmetric unit consists of one manganese cation located on a twofold rotation axis and half of a 2,2'-bi-pyridine ligand, the other half being generated by the same twofold rotation axis, as well as one thio-cyanate anion in a general position. The Mn(II) cations are linked by two pairs of ?1,3-bridging thio-cyanate ligands into chains along the c axis; because the N atoms of the 2,2'-bi-pyridine ligands, as well as the N and the S atoms of the thio-cyanate anions, are each cis-coordinating, these chains show a zigzag arrangement.

| S-EPMC4257407 | biostudies-literature

Aqua-{4,4'-dimeth-oxy-2,2'-[pyridine-2,3-diylbis(nitrilo-methanylyl-idene)]-diphenolato}copper(II).

Project description:Mol-ecules of the title compound, [Cu(C(21)H(17)N(3)O(4))(H(2)O)], lie across a crystallographic mirror plane. The Cu(II) atom is five-coordinated in a distorted square-pyramidal environment by two phenolate O atoms and two imine N atoms of the tetra-dentate Schiff base anion in the basal plane and one water mol-ecule in the apical position. Because of symmetry, the pyridine N atom and the corresponding C atom at the 4-position of the pyridine ring are disordered. The crystal packing can be described as being composed of alternating layers stacked along [001]. Intra-molecular C-H?N and inter-molecular C-H?O and O-H?O hydrogen-bonding inter-actions, as well as C-H?? and ?-? stacking inter-actions [shortest centroid-centroid distance = 3.799?(8)?Å and inter-planar distance = 3.469?(2)?Å] are observed.

| S-EPMC3414130 | biostudies-other

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