[해외논문]Crystal structure of trans -dichlorido(1,4,8,11-tetraazacyclotetradecane-κ 4 N )chromium(III) bis(formamide-κ O )(1,4,8,11-tetraazacyclotetradecane-κ 4 N )chromium(III) bis[tetrachloridozincate(II)]원문보기
In the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2, the two CrIII ions each show a distorted octahedral coordination with four N atoms of cyclam in the equatorial plane and two Cl− anions or O-bonded formamide groups in axial positions. The macrocyclic moieties adopt the...
In the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2, the two CrIII ions each show a distorted octahedral coordination with four N atoms of cyclam in the equatorial plane and two Cl− anions or O-bonded formamide groups in axial positions. The macrocyclic moieties adopt the most stable trans-III conformation. In the crystal, extensive N—H⋯Cl and C—H⋯Cl hydrogen bonds connect the [CrCl2(C10H24N4)]+ and [Cr(HCONH2)2(C10H24N4)]3+ cations and tetrachloridozincate anions, forming a three-dimensional network.The structure of the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2 (C10H24N4 = 1,4,8,11-tetraazacyclotetradecane, cyclam; HCONH2 = formamide, fa), has been determined from synchrotron X-ray data. The asymmetric unit contains two independent halves of the [CrCl2(cyclam)]+ and [Cr(fa)(cyclam)]3+ cations, and one tetrachloridozincate anion. In each complex cation, the CrIII ion is coordinated by the four N atoms of the cyclam ligand in the equatorial plane and two Cl ligands or two O-bonded formamide molecules in a trans axial arrangement, displaying a distorted octahedral geometry with crystallographic inversion symmetry. The Cr—N(cyclam) bond lengths are in the range 2.061 (2) to 2.074 (2) Å, while the Cr—Cl and Cr—O(fa) bond distances are 2.3194 (7) and 1.9953 (19) Å, respectively. The macrocyclic cyclam moieties adopt the centrosymmetric trans-III conformation with six- and five-membered chelate rings in chair and gauche conformations. The crystal structure is stabilized by intermolecular hydrogen bonds involving the NH or CH groups of cyclam and the NH2 group of coordinated formamide as donors, and Cl atoms of the ZnCl42− anion as acceptors.
In the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2, the two CrIII ions each show a distorted octahedral coordination with four N atoms of cyclam in the equatorial plane and two Cl− anions or O-bonded formamide groups in axial positions. The macrocyclic moieties adopt the most stable trans-III conformation. In the crystal, extensive N—H⋯Cl and C—H⋯Cl hydrogen bonds connect the [CrCl2(C10H24N4)]+ and [Cr(HCONH2)2(C10H24N4)]3+ cations and tetrachloridozincate anions, forming a three-dimensional network.The structure of the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2 (C10H24N4 = 1,4,8,11-tetraazacyclotetradecane, cyclam; HCONH2 = formamide, fa), has been determined from synchrotron X-ray data. The asymmetric unit contains two independent halves of the [CrCl2(cyclam)]+ and [Cr(fa)(cyclam)]3+ cations, and one tetrachloridozincate anion. In each complex cation, the CrIII ion is coordinated by the four N atoms of the cyclam ligand in the equatorial plane and two Cl ligands or two O-bonded formamide molecules in a trans axial arrangement, displaying a distorted octahedral geometry with crystallographic inversion symmetry. The Cr—N(cyclam) bond lengths are in the range 2.061 (2) to 2.074 (2) Å, while the Cr—Cl and Cr—O(fa) bond distances are 2.3194 (7) and 1.9953 (19) Å, respectively. The macrocyclic cyclam moieties adopt the centrosymmetric trans-III conformation with six- and five-membered chelate rings in chair and gauche conformations. The crystal structure is stabilized by intermolecular hydrogen bonds involving the NH or CH groups of cyclam and the NH2 group of coordinated formamide as donors, and Cl atoms of the ZnCl42− anion as acceptors.
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