(1R*,2S*)-N,N′-Bis[(E)-1H-pyrrol-2-ylmethylidene]cyclohexane-1,2-diamine monohydrate
نویسنده
چکیده
The title compound, C16H20N4·H2O, was synthesized from cis-1,2-diamino-cyclo-hexane (a racemic mixture of the (1R,2S) and (1S,2R) enanti-omers). The compound crystallized with two mol-ecules (A and B) in the asymmetric unit with a single water solvent mol-ecule per Schiff base mol-ecule. Mol-ecules A and B have similar conformations as illustrated by the least-squares-fit with an r.m.s. deviation of 0.242 Å. The mol-ecules within the asymmetric unit are bridged by hydrogen bonds to the two water mol-ecules, resulting in a heterotetramer. The water mol-ecule acts as both a hydrogen-bond donor and acceptor. The pyrrole-imine units are not co-planar, making an angle of 73.9 (3)° and 76.9 (3)° in mol-ecules A and B, respectively.
منابع مشابه
{(1R,2R)-N,N′-Bis[2-(N-methylanilino)benzylidene]cyclohexane-1,2-diamine-κ2 N,N′}dichloridoiron(II)
In the title compound, [FeCl(2)(C(34)H(36)N(4))], the Fe(II) ion is coordinated by two Cl atoms and by two N atoms from a (1R,2R)-N,N'-bis[2-(N-methyl-anilino)benzyl-idene]cyclo-hexane-1,2-diamine ligand in a distorted tetra-hedral geometry. The mol-ecule has approximate C(2) point symmetry. The dihedral angles between the phenyl and benzene rings on either side of the ligand are 64.56 (14) and...
متن کاملBis[N,N′-bis[(1H-pyrrol-2-yl)methylene]cyclohexane-1,2-diamine]titanium(IV) tetrahydrofuran solvate
In the title compound, [Ti(C(16)H(18)N(4))(2)]·C(4)H(8)O, the Ti(IV) ion is chelated by two Schiff base dianions with a TiN(8) distorted square-anti-prismatic coordination geometry. The two cyclo-hexane rings assume the typical chair conformation. No hydrogen bonding is observed in the crystal structure.
متن کامل(1R,2R,E,E)-N,N′-Bis(4-chlorobenzylidene)cyclohexane-1,2-diamine
The title Schiff base ligand, C(20)H(20)Cl(2)N(2), was prepared by condensation of commercially available p-chloro-benzalde-hyde and (R,R)-1,2-diammonium-cyclo-hexane mono-(+)-tartrate. The cyclo-hexane ring adopts a chair conformation. The dihedral angle between the two aromatic rings is 62.52 (8)°. The crystal structure is stabilized by an inter-molecular C-H⋯Cl hydrogen bond.
متن کامل1,2-Bis(1H-pyrrol-2-ylmethylene)diazane monohydrate
The mol-ecular structure of title compound, C(10)H(10)N(4)·H(2)O, has an inversion centre located on the mid-point of the N-N bond of the mol-ecule. A twofold rotation axis passes through the water O atom. In the crystal structure, a two-dimensional network is constructed through N-H⋯O and O-H⋯N hydrogen bonds.
متن کامل(1R,2R)-N,N′-Bis[1-(2-pyridyl)ethylidene]cyclohexane-1,2-diamine
In the title compound, C(20)H(24)N(4), the cyclo-hexane ring adopts a chair conformation with the two imine groups linked at equatorial positions. The two halves of the mol-ecule are related by a crystallographic twofold rotation axis. The dihedral angle between the pyridine rings is 75.73 (3)°.
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عنوان ژورنال:
دوره 68 شماره
صفحات -
تاریخ انتشار 2012