rac-Ammonium cis-2-carboxycyclohexane-1-carboxylate
نویسندگان
چکیده
In the structure of the title compound, NH(4) (+)·C(8)H(11)O(4) (-), the carboxyl and carboxyl-ate groups of the cation adopt C-C-C-O torsion angles of 174.9 (2) and -145.4 (2)°, respectively, with the alicyclic ring. The ammonium H atoms of the cations give a total of five hydrogen-bonding associations with carboxyl-ate O-atom acceptors of the anion which, together with a carboxyl O-H⋯O(carboxyl-ate) inter-action give sheet structures which lie in the (101) planes.
منابع مشابه
rac-2-Aminopyridinium cis-2-carboxycyclohexane-1-carboxylate
In the structure of the title compound, C(5)H(7)N(2) (+)·C(8)H(11)O(4) (-), the cis anions associate through head-to-tail carb-oxy-lic acid-carboxyl O-H⋯O hydrogen bonds [graph set C(7)], forming chains which extend along c and are inter-linked through the carboxyl groups, forming cyclic R(2) (2)(8) associations with the pyridinium and an amine H-atom donor of the cation. Further amine-carboxyl...
متن کامل4-Aminopyridinium cis-2-carboxycyclohexane-1-carboxylate
In the structure of the title molecular salt, C(5)H(7)N(2) (+)·C(8)H(11)O(4) (-), the cis monoanions associate through short O-H⋯O hydrogen bonds in the carb-oxy-lic acid groups [graph set C(7)], forming zigzag chains which extend along the c axis. These are inter-linked through pyridinium and amine N-H⋯O hydrogen bonds, giving a three-dimensional network structure.
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In the structure of the title compound, [Li(C(8)H(11)O(4))(H(2)O)(2)](n), the distorted tetra-hadral LiO(4) coordination sphere comprises two water mol-ecules and two carboxyl O-atom donors from separate bridging cis-2-carb-oxy-cyclo-hexane-1-carboxyl-ate monoanions [Li-O = 1.887 (4)-1.946 (3) Å], giving chain substructures which extend along [010]. Water-water and water-carboxyl O-H⋯O hydrogen...
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The racemic title compound, C(9)H(11)NO(4)·H(2)O, a tricyclic rearranged amino-norbornane dicarb-oxy-lic acid, is a conformationally rigid analogue of glutamic acid and exists as an ammonium-carboxyl-ate zwitterion, with the bridghead carb-oxy-lic acid group anti-related. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds involving the ammonium, carb-oxy-lic acid and water donor groups with both wa...
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In the title compound C(27)H(19)ClO(6), the coumarin ring system is not exactly planar, with a dihedral angle of 4.12 (7)° between its benzene and lactone rings. The cis-fused pyran rings adopt half-chair conformations. The carbometh-oxy and chloro-phenyl groups are in a trans configuration. The crystal packing is stabilized by inter-molecular C-H⋯O interactions, which produce a centrosymmetric...
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