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Crystal structure of N,N,N',N'-tetra-methyl-ethane-di-amine.

ABSTRACT: The title compound N,N,N',N'-tetra-methyl-ethanedi-amine, C₆H₁₆N₂, is a bidentate amine ligand commonly used in organolithium chemistry for deaggregation. Crystals were grown at 243 K from n-pentane solution. The complete mol-ecule is generated by a crystallographic center of symmetry and the conformation of the di-amine is anti-periplanar. To investigate the inter-molecular inter-actions, a Hirshfeld surface analysis was performed. It showed that H⋯H (van der Waals) inter-actions dominate with a contact percentage of 92.3%.

SUBMITTER: Schrimpf T

PROVIDER: S-EPMC8739202 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of bis-(μ2-tetra-bromo-phthalato-κ(2) O (1):O (2))bis[aqua(N,N,N',N'-tetra-methyl-ethane-1,2-di-amine-κ(2) N,N')copper(II)].

Project description:In the title complex, [Cu2(C8Br4O4)2(C6H16N2)2(H2O)2], the Cu(II) cation is chelated by a tetra-methyl-ethane-1,2-di-amine ligand and coordinated by a water mol-ecule as well as bridged by two tetra-bromo-phthalate anions in a distorted O3N2 trigonal-bipyramidal geometry. The two symmetry-related tetra-bromo-phthalate anions bridge the two Cu(II) cations, forming a centrosymmetric dinuclear complex in which the Cu⋯Cu separation is 5.054 (2) Å. Intra-molecular classic O-H⋯O hydrogen bonds and weak C-H⋯O hydrogen bonds occur in the dinuclear mol-ecule. In the crystal, the mol-ecules are linked by weak C-H⋯Br and C-H⋯O inter-actions into supra-molecular chains propagating along the b-axis direction.

| S-EPMC4555376 | biostudies-literature

Crystal structure of tris-(di-methyl-amido-?N)-bis-(di-methyl-amine-?N)-zirconium(IV) iodide.

Project description:Zirconium amides have become increasingly popular and useful due to their widespread use as precursors to other zirconium complexes and their use in the production of solid oxide fuel cells (SOFCs). Herein we report the mol-ecular structure of tris-(di-methyl-amido)-bis-(di-methyl-amine)-zirconium(IV) iodide, [Zr(C2H6N)3(C2H7N)2]I. The bond lengths and bond angles are consistent with a slightly distorted trigonal-bipyramidal coordination geometry around the metal atom. N?I contacts of 3.6153?(15) and 3.5922?(14)?Å are consistent with the presence of N-H?I inter-actions. These N-H?I inter-actions link the complex cations and iodide anions into extended chains that propagate parallel to the a axis.

| S-EPMC4704753 | biostudies-literature

Hybrid organic-inorganic crystal structure of 4-(di-methyl-amino)-pyridinium di-methyl-ammonium tetra-chlorido-lead(II).

Project description:The title compound, (C2H8N)(C7H11N2)[PbCl4], is a hybrid organic-inorganic material. It crystallizes in the space group C2/c and contains one half of a mol-ecule of lead chloride, 4-(di-methyl-amino)-pyridinium, and di-methyl-ammonium in the asymmetric unit. The crystal structure exhibits chains of lead chloride capped by 4-(di-methyl-amino)-pyridinium and di-methyl-ammoium by hydrogen bonding. This creates a one-dimensional zipper-like structure down the a axis. The crystal structure is examined and compared to a similar structure containing lead chloride and di-methyl-benzene-1,4-diaminium.

| S-EPMC5683487 | biostudies-literature

Crystal structure of bis-[trans-(ethane-1,2-di-amine-κ(2) N,N')bis-(thio-cyanato-κN)chromium(III)] tetra-chlorido-zincate from synchrotron data.

Project description:The structure of the title compound, [Cr(NCS)2(C2H8N2)2]2[ZnCl4], has been determined from synchrotron data. In the asymmetric unit, there are four independent halves of the Cr(III) complex cations, each of which lies on an inversion centre, and one tetra-chlorido-zincate anion in a general position. The Cr(III) atoms are coordinated by the four N atoms of two ethane-1,2-di-amine (en) ligands in the equatorial plane and two N-bound NCS(-) anions in a trans arrangement, displaying a slightly distorted octa-hedral geometry with crystallographic inversion symmetry. The Cr-N(en) and Cr-N(NCS) bond lengths range from 2.0653 (10) to 2.0837 (10) Å and from 1.9811 (10) to 1.9890 (10) Å, respectively. The five-membered metalla-rings are in stable gauche conformations. The [ZnCl4](2-) anion has a distorted tetra-hedral geometry. The crystal structure is stabilized by inter-molecular hydrogen bonds involving the en NH2 or CH2 groups as donors and chloride ligands of the anion and S atoms of NCS(-) ligands as acceptors.

| S-EPMC4331884 | biostudies-literature

Crystal structure of tetra-aqua-(di-methyl-formamide)-tetra-kis-(?-N,2-dioxido-benzene-1-carboximidato)tetra-kis-(?-tri-methyl-acetato)-tetra-manganese(III)sodiumyttrium-di-methyl-formamide-water (1/8.04/0.62).

Project description:The synthesis and crystal structure for the title compound, [YNaMn4(C7H4NO3)4(C5H9O2)4(H2O)3.76(C3H7NO)0.24]·8.04C3H7NO·0.62H2O or [Y(III)Na(OTMA)4[12-MCMn(III)N(shi)-4](H2O)3.76(DMF)0.24·8.04DMF·0.62H2O, where OTMA is tri-methyl-acetate, MC is metallacrown, shi(3-) is salicyl-hydroximate, and DMF is N,N-di-methyl-formamide, is reported. The macrocyclic metallacrown consists of an -[Mn(III)-N-O]4- ring repeat unit, and the metallacrown captures one Y(III) ion and one Na(I) ion in the central cavity on opposite faces of the metallacrown. Overall the metallacrown is domed towards the side of the Na(I) ion. Both the Y(III) and Na(I) ions are eight-coordinate, and the tri-methyl-acetate anions bridge the central Y(III) to each ring Mn(III) ion. The ring Mn(III) ions are six-coordinate with a tetra-gonally distorted octa-hedral geometry.

| S-EPMC4645067 | biostudies-literature

Crystal structure and Hirshfeld surface analysis of bis-[(eth-oxy-methane-thio-yl)sulfanido](N,N,N',N'-tetra-methyl-ethane-1,2-di-amine)-mercury(II).

Project description:The title four-coordinate mononuclear complex, [Hg(C3H5OS2)2(C6H16N2)] or [Hg(C3H5OS2)2(tmeda)] (tmeda: N,N,N',N'-tetra-methyl-ethane-1,2-di-amine), has a distorted tetra-hedral geometry. The HgII ion is coordinated to two N atoms of the N,N,N',N'-tetra-methyl-ethylenedi-amine ligand and two S atoms from two ethylxanthate xanthate ligands. In the crystal, mol-ecules are linked by weak C-H⋯S hydrogen bonds, forming a two-dimensional supra-molecular architecture in the ab plane. The most important contributions for the crystal packing are from H⋯H (59.3%), S⋯H (27.4%) and O⋯H (7.5%) inter-actions.

| S-EPMC8587978 | biostudies-literature

Crystal structure of (N (1)-benzyl-N (1),N (2),N (2)-tri-methyl-ethane-1,2-di-amine-?(2) N,N')di-chloridomercury(II).

Project description:In the structure of the title compound, [HgCl2(C12H20N2)], the Hg(II) atom has a distorted tetra-hedral coordination sphere defined by two tertiary amine N-atom donors, as well as two Cl(-) anions [the dihedral angle between the N-Hg-N and Cl-Hg-Cl planes is 82.80?(9)°]. The five-membered chelate ring adopts an envelope conformation, with puckering parameters of Q(2) = 0.446?(6)?Å and ?(2) = 88.8?(6)°, with the two amine CH3 substituents on opposite sides of the ring. In the crystal, the mol-ecules are linked by C-H?Cl inter-actions into a zigzag chain parallel to [101].

| S-EPMC4186188 | biostudies-other

Crystal structure of the di-Mannich base 4,4'-di-chloro-3,3',5,5'-tetra-methyl-2,2'-[imidazolidine-1,3-diylbis(methyl-ene)]diphenol.

Project description:The title compound, C21H26Cl2N2O2, was prepared in a solvent-free microwave-assisted synthesis, and crystallizes in the ortho-rhom-bic space group Pna21. The imidazolidine ring adopts an envelope conformation and its mean plane is almost perpendicular to the two pendant aromatic rings [dihedral angles = 84.61 (9) and 86.54 (9)°]. The mol-ecular structure shows the presence of two intra-molecular O-H⋯N hydrogen bonds between the phenolic hy-droxy groups and imidazolidine N atoms. The two 3-chloro-6-hy-droxy-2,4-di-methyl-benzyl groups are located in a cis orientation with respect to the imidazolidine fragment. As a result, the lone pairs of electrons on the N atoms are presumed to be disposed in a syn conformation. This is therefore the first example of an exception to the 'rabbit-ears' effect in such 2,2'-[imidazolidine-1,3-diylbis(methyl-ene)]diphenol derivatives.

| S-EPMC4350744 | biostudies-literature

{N1-[2-(Butyl-selan-yl)benz-yl]-N2,N2-di-methyl-ethane-1,2-di-amine}-dichlorido-mercury(II).

Project description:In the title compound, [HgCl2(C16H28N2Se)], the primary geometry around the Se and Hg atoms is distorted trigonal-pyramidal and distorted square-pyramidal, respectively. The distortion of the mol-ecular geometry in the complex is caused by the steric demands of the ligands attached to the Se atom. The Hg atom is coordinated through two chloride anions, an N atom and an Se atom, making up an unusual HgNSeCl2 coordination sphere with an additional long Hg⋯N inter-action. Inter-molecular C-H⋯Cl inter-actions are the only identified inter-molecular hydrogen-bonding inter-actions that seem to be responsible for the self assembly. These relatively weak C-H⋯Cl hydrogen bonds possess the required linearity and donor-acceptor distances. They act as mol-ecular associative forces that result in a supra-molecular assembly along the b-axis direction in the solid state of the title compound.

| S-EPMC6072982 | biostudies-literature

Crystal structure of 4,4'-(ethane-1,2-di-yl)bis-(2,6-di-bromo-aniline).

Project description:In the title compound, C14H12Br4N2, the mol-ecule lies across an inversion center and hence the benzene rings are strictly coplanar. In the crystal, mol-ecules are linked by N-H⋯N and weak N-H⋯Br hydrogen bonds, forming a two-dimensional network parallel to (101). In addition, type II Br⋯Br inter-actions [3.625 (4) Å] complete a three-dimensional supra-molecular network.

| S-EPMC4331912 | biostudies-literature

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