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Moon D, Jeon J, Choi JH. Two exodentate conformations, spectroscopic properties, and Hirshfeld surface analysis of new macrocyclic compounds with tetrabromide and tetraperchlorate. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Moon D, Choi JH. Crystal structure and anti/syn-conformational isomers of trans-bis[dibromobis(2,2-dimethyl-1,3-propanediamine)chromium(III)] tetrabromozincate. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Moon D, Choi JH. Crystal structure of cis-(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4 N)bis-(thio-cyanato-κ N)chromium(III) bromide from synchrotron X-ray diffraction data. Acta Crystallogr E Crystallogr Commun 2021; 77:222-225. [PMID: 33953940 PMCID: PMC8061105 DOI: 10.1107/s2056989021001055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 11/23/2022]
Abstract
The crystal structure of the title complex, cis-[Cr(NCS)2(cyclam)]Br (cyclam = 1,4,8,11-tetra-aza-cyclo-tetra-decane, C10H24N4), has been determined from synchrotron X-ray data. The asymmetric unit contains one [Cr(NCS)2(cyclam)]+ cation and one bromide anion. The CrIII ion of the complex cation is coordinated by the four N atoms of the cyclam ligand and by two N-coordinating NCS groups in a cis arrangement, displaying a distorted octa-hedral coordination sphere. The Cr-N(cyclam) bond lengths are in the range 2.075 (3) to 2.081 (3) Å while the average Cr-N(NCS) bond length is 1.996 (16) Å. The macrocyclic cyclam moiety adopts the most stable cis-V conformation. The crystal structure is stabilized by inter-molecular hydrogen bonds involving the cyclam N-H groups as donor groups, and the bromide anion and the S atom of one of the NCS ligands as acceptor groups.
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Affiliation(s)
- Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Synthesis, crystal structure, infrared spectroscopy and Hirshfeld surface analysis of cis-(thiocyanato-κN)(1,4,8,11-tetraazacyclotetradecane-κN4)chromium(III)(µ-1,3-thiocyanato-κN,S)trichloridozincate. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1863381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong, Republic of Korea
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Moon D, Mazúr M, Valko M, Choi JH. Synthesis, crystal structure, and spectroscopic properties of bis(rac-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane)(μ-1,2,3,4-oxalato)dichloridozincate(II)(μ-1,2,3-oxalato)dichromium(III) tetrachloridozincate monohydrate. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Moon D, Jeon J, Choi JH. Crystal structure, spectroscopic properties, and Hirshfeld surface analysis of a Ni 2+-doped 3,14-diethyl-2,13-diaza-6,17-diazoniatricyclo (16.4.0.0 7,12)docosane dichloride dihydrate. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1799199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Jonghyoun Jeon
- Department of Chemistry, Andong National University, Andong, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong, Republic of Korea
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Moon D, Choi JH. Crystal structure of trans-di-chlorido-(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4 N)chromium(III) bis-(form-amide-κ O)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4 N)chromium(III) bis-[tetra-chlorido-zincate(II)]. Acta Crystallogr E Crystallogr Commun 2020; 76:656-659. [PMID: 32431927 PMCID: PMC7199251 DOI: 10.1107/s2056989020004910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 04/06/2020] [Indexed: 11/18/2022]
Abstract
The structure of the title compound, [CrCl2(C10H24N4)][Cr(HCONH2)2(C10H24N4)][ZnCl4]2 (C10H24N4 = 1,4,8,11-tetra-aza-cyclo-tetra-decane, 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 tetra-chlorido-zincate 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 mol-ecules in a trans axial arrangement, displaying a distorted octa-hedral 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 inter-molecular hydrogen bonds involving the NH or CH groups of cyclam and the NH2 group of coordinated formamide as donors, and Cl atoms of the ZnCl4 2- anion as acceptors.
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Affiliation(s)
- Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Crystal structure of 1,4,8,11-tetra-methyl-1,4,8,11-tetra-azonia-cyclo-tetra-decane bis-(perchlorate) dichloride from synchrotron X-ray data. Acta Crystallogr E Crystallogr Commun 2020; 76:324-327. [PMID: 32148869 PMCID: PMC7057375 DOI: 10.1107/s2056989020001322] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 11/12/2022]
Abstract
The crystal structure of title salt, C14H36N4 4+·2ClO4 -·2Cl-, has been determined using synchrotron radiation at 220 K. The structure determination reveals that protonation has occurred at all four amine N atoms. The asymmetric unit contains one half-cation (completed by crystallographic inversion symmetry), one perchlorate anion and one chloride anion. A distortion of the perchlorate anion is due to its involvement in hydrogen-bonding inter-actions with the cations. The crystal structure is consolidated by inter-molecular hydrogen bonds involving the 1,4,8,11-tetra-methyl-1,4,8,11-tetra-azonia-cyclo-tetra-decane N-H and C-H groups as donor groups, and the O atoms of the perchlorate and chloride anion as acceptor groups, giving rise to a three-dimensional network.
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Affiliation(s)
- Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Synthesis, Crystal Structure, and Hirshfeld Surface Analysis of Rubidium trans-Bis(N-methyliminodiacetato)chromate(III). CRYSTALLOGR REP+ 2020. [DOI: 10.1134/s1063774519070113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Syntheses, crystal structures and spectroscopic properties of two Cu2+-doped single crystals containing 3,14-diethyl-2,6,13,17-tetraazatricyclo[16.4.0.07,12]docosane. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Synthesis, Crystal Structure, Spectroscopic Properties, and Hirshfeld Surface Analysis of Diaqua [3,14-dimethyl-2,6,13,17 tetraazatricyclo(16.4.0.07,12)docosane]copper(II) Dibromide. CRYSTALS 2019. [DOI: 10.3390/cryst9070336] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A newly prepared Cu(II) complex salt, Cu(L1)(H2O)2Br2, where L1 is 3,14-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.07,12) docosane, is characterized by elemental and crystallographic analyses. The Cu(II) center is coordinated by four nitrogen atoms of macrocyclic ligand and the axial position by two water molecules. The macrocyclic ligand adopts an optimally stable trans-III conformation with normal Cu–N bond lengths of 2.018 (3) and 2.049 (3) Å and long axial Cu1–O1W length of 2.632 (3) Å due to the Jahn–Teller effect. The complex is stabilized by hydrogen bonds formed between the O atoms of water molecules and bromide anions. The bromide anion is connected to the neighboring complex cations and water molecules through N–H···Br and O–H···Br hydrogen bonds, respectively. The g-factors obtained from the electron spin resonance spectrum show the typical trend of g∥ > g⊥ > 2.0023, which is in a good accordance to the dx2-y2 ground state. It reveals a coordination sphere of tetragonal symmetry for the Cu(II) ion. The infrared and electronic absorption spectral properties of the complex are also discussed. Hirshfeld surface analysis represents that the H···H, H···Br/Br···H and H···O/O···H contacts are the major molecular interactions in the prepared complex.
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Moon D, Choi JH. Synthesis, molecular structure, and spectroscopic properties of tris[trans-diazidobis(2,2-dimethylpropane-1,3-diamine)chromium(III)]bis[tertaazido(2,2-dimethylpropane-1,3-diamine)chromium(III)] perchlorate. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Guo L, Zada M, Zhang W, Vignesh A, Zhu D, Ma Y, Liang T, Sun WH. Highly linear polyethylenes tailored with 2,6-bis[1-(p-dibenzo-cycloheptylarylimino)ethyl]pyridylcobalt dichlorides. Dalton Trans 2019; 48:5604-5613. [DOI: 10.1039/c9dt01109a] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Bis(imino)pyridylcobalt dichlorides displayed high activities for ethylene polymerization, producing highly linear PEs with the vinyl end group as the major one.
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Affiliation(s)
- Liwei Guo
- Beijing Key Laboratory of Clothing Materials R&D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science and Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Muhammad Zada
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Wenjuan Zhang
- Beijing Key Laboratory of Clothing Materials R&D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science and Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Arumugam Vignesh
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Dongzhi Zhu
- Beijing Key Laboratory of Clothing Materials R&D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science and Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
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Aree T, Hong YP, Choi JH. Crystal structures, spectroscopic characterization, and Hirshfeld surface analyses of three constrained cyclam compounds with perchlorate counteranions. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.102] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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First copper(II)-cyclophosphato complex with macrocyclic N-donor ligand: Single crystal structure elucidation with Hirshfeld surface analysis, optical, electrochemical and antioxidant properties. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Moon D, Choi JH. Crystal structure of [2,13-bis-(acetamido)-5,16-dimethyl-2,6,13,17-tetra-aza-tri-cyclo-[16.4.0.0 7,12]docosane-κ 4N]silver(II) dinitrate from synchrotron X-ray data. Acta Crystallogr E Crystallogr Commun 2018; 74:461-464. [PMID: 29765746 PMCID: PMC5946968 DOI: 10.1107/s2056989018003560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 03/01/2018] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of the title compound, [Ag(C24H46N6O2)](NO3)2 [C24H46N6O2 is (5,16-dimethyl-2,6,13,17-tetra-aza-tri-cyclo-[16.4.0.07,12]docosane-2,13-di-yl)diacetamide, L], consists of one independent half of the [Ag(C24H46N6O2)]2+ cation and one nitrate anion. The Ag atom, lying on an inversion centre, has a square-planar geometry and the complex adopts a stable trans-III conformation. Inter-estingly, the two O atoms of the pendant acetamide groups are not coordinated to the AgII ion. The longer distance of 2.227 (2) Å for Ag-N(tertiary) compared to 2.134 (2) Å for Ag-N(secondary) may be due to the effects of the attached acetamide group on the tertiary N atom. Two nitrate anions are very weakly bound to the AgII ion in the axial sites and are further connected to the ligand of the cation by N-H⋯O hydrogen bonds. The crystal packing is stabilized by hydrogen-bonding inter-actions among the N-H donor groups of the macrocycle and its actetamide substituents, and the O atoms of the nitrate anions and of an acetamide group as the acceptor atoms.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Tanaka S, Akitsu T, Choi JH. Crystal Structure, Spectroscopic and Magnetic Properties of Trans-Difluoro-(1,4,8,11-Tetraazaundecane)Chromium(III) Aquatrichlorozincate. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618010134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Subhan MA, Ng SW, Lee CS, Choi JH. Crystal structure and spectroscopic properties of isothiocyanato[(3,14-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.07,12)docosane)]copper(II) thiocyanate. J STRUCT CHEM+ 2017. [DOI: 10.1134/s002247661704014x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Moon D, Choi JH. Crystal structure of 1,4,8,11-tetra-azonia-cyclo-tetra-decane bis-(dichromate) monohydrate from synchrotron data. Acta Crystallogr E Crystallogr Commun 2017; 73:755-758. [PMID: 28529791 PMCID: PMC5418799 DOI: 10.1107/s2056989017005771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 04/17/2017] [Indexed: 12/01/2022]
Abstract
The asymmetric unit of the hydrated title salt, (C10H28N4)[Cr2O7]2·H2O [C10H28N4 = H4(cyclam) = 1,4,8,11-tetra-azonia-cyclo-tetra-deca-ne], contains two half-cations (both completed by crystallographic inversion symmetry), two dichromate anions and one water mol-ecule. The two [CrO7]2- anions exhibit a nearly staggered conformation, with bridging angles of 133.37 (11) and 136.28 (12)°. The distortions of the dichromate anions are due to their participation in hydrogen-bonding inter-actions with the water mol-ecule and the cations. Inter-molecular hydrogen bonds involving the cyclam N-H groups and water O-H groups as donor groups, and the O atoms of the dichromate anions as acceptor groups give rise to a three-dimensional network.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Narayanan J, Guadalupe HJ, Thangarasu P. Phenol oxidation through its adduct formation with chromium complex of 1,4,8,11-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane: A theoretical study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Moon D, Choi JH. Crystal structure of bis-[(oxalato-κ 2O1, O2)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4N)chromium(III)] dichromate octa-hydrate from synchrotron X-ray data. Acta Crystallogr E Crystallogr Commun 2017; 73:403-406. [PMID: 28316819 PMCID: PMC5347064 DOI: 10.1107/s2056989017002614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 11/17/2022]
Abstract
The asymmetric unit of the title compound, [Cr(C2O4)(C10H24N4)]2[Cr2O7]·8H2O (C10H24N4 = 1,4,8,11-tetra-aza-cyclo-tetra-decane, cyclam; C2O4 = oxalate, ox) contains one [Cr(ox)(cyclam)]+ cation, one half of a dichromate anion that lies about an inversion centre so that the bridging O atom is equally disordered over two positions, and four water mol-ecules. The terminal O atoms of the dichromate anion are also disordered over two positions with a refined occupancy ratio 0.586 (6):0.414 (6). The CrIII ion is coordinated by the four N atoms of the cyclam ligand and one bidentate oxalato ligand in a cis arrangement, resulting in a distorted octa-hedral geometry. The Cr-N(cyclam) bond lengths are in the range 2.069 (2)-2.086 (2) Å, while the average Cr-O(ox) bond length is 1.936 Å. The macrocyclic cyclam moiety adopts the cis-V conformation. The dichromate anion has a staggered conformation. The crystal structure is stabilized by inter-molecular hydrogen bonds involving the cyclam N-H groups and water O-H groups as donors, and the O atoms of oxalate ligand, water mol-ecules and the Cr2O72- anion as acceptors, giving rise to a three-dimensional network.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Subhan MA, Moon D, Choi JH. Synthesis, crystal structure determination, and spectroscopic characterization of [2,13-dibenzyl-5,16-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.07,12)docosane] copper(II) dinitrate. MAIN GROUP CHEMISTRY 2017. [DOI: 10.3233/mgc-160219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Md Abdus Subhan
- Department of Chemistry, Shah Jalal University of Science and Technology, Sylhet, Bangladesh
| | - Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong, Republic of Korea
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Moon D, Takase M, Akitsu T, Choi JH. Crystal structure of bis-[ cis-(1,4,8,11-tetra-aza-cyclo-tetra-deca-ne-κ 4N)bis(thio-cyanato-κ N)chrom-ium(III)] dichromate monohydrate from synchrotron X-ray diffraction data. Acta Crystallogr E Crystallogr Commun 2017; 73:72-75. [PMID: 28083140 PMCID: PMC5209776 DOI: 10.1107/s2056989016020120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 12/18/2016] [Indexed: 11/23/2022]
Abstract
The structure of the complex salt, cis-[Cr(NCS)2(cyclam)]2[Cr2O7]·H2O (cyclam = 1,4,8,11-tetra-aza-cyclo-tetra-decane, C10H24N4), has been determined from synchrotron data. The asymmetric unit comprises of one [Cr(NCS)2(cyclam)]+ cation, one half of a Cr2O72- anion (completed by inversion symmetry) and one half of a water mol-ecule (completed by twofold rotation symmetry). The CrIII ion is coordinated by the four cyclam N atoms and by two N atoms of cis-arranged thio-cyanate anions, displaying a distorted octa-hedral coordination sphere. The Cr-N(cyclam) bond lengths are in the range 2.080 (2) to 2.097 (2) Å while the average Cr-N(NCS) bond length is 1.985 (4) Å. The macrocyclic cyclam moiety adopts the cis-V conformation. The bridging O atom of the dichromate anion is disordered around an inversion centre, leading to a bending of the Cr-O-Cr bridging angle [157.7 (3)°]; the anion has a staggered conformation. The crystal structure is stabilized by inter-molecular hydrogen bonds involving the cyclam N-H groups and water O-H groups as donor groups, and the O atoms of the Cr2O72- anion and water mol-ecules as acceptor groups, giving rise to a three-dimensional network.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Masahiro Takase
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takashiro Akitsu
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Crystal structure of cis-di-chlorido-(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4N)chromium(III) (oxalato-κ 2O1, O2)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ 4N)chromium(III) bis(perchlorate) from synchrotron data. Acta Crystallogr E Crystallogr Commun 2016; 72:1417-1420. [PMID: 27746932 PMCID: PMC5050767 DOI: 10.1107/s2056989016014134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/05/2016] [Indexed: 11/10/2022]
Abstract
In the asymmetric unit of the title compound, [CrCl2(C10H24N4)][Cr(C2O4)(C10H24N4)](ClO4)2 (C10H24N4 = 1,4,8,11-tetra-aza-cyclo-tetra-decane, cyclam; C2O4 = oxalate, ox), there are two independent halves of the [CrCl2(cyclam)]+ and [Cr(ox)(cyclam)]+ cations, and one perchlorate anion. In the complex cations, which are completed by application of twofold rotation symmetry, the CrIII ions are coordinated by the four N atoms of a cyclam ligand, and by two chloride ions or one oxalate bidentate ligand in a cis arrangement, displaying an overall distorted octa-hedral coordination environment. The Cr-N(cyclam) bond lengths are in the range of 2.075 (5) to 2.096 (4) Å while the Cr-Cl and Cr-O(ox) bond lengths are 2.3358 (14) and 1.956 (4) Å, respectively. Both cyclam moieties adopt the cis-V conformation. The slightly distorted tetra-hedral ClO4- anion remains outside the coordination sphere. The supra-molecular architecture includes N-H⋯O and N-H⋯Cl hydrogen bonding between cyclam NH donor groups, O atoms of the oxalate ligand or ClO4- anions and one Cl ligand as acceptors, leading to a three-dimensional network structure.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Crystal structure of trans-diammine(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ(4) N)chromium(III) tetra-chlorido-zincate chloride monohydrate from synchrotron data. Acta Crystallogr E Crystallogr Commun 2016; 72:456-9. [PMID: 27375863 PMCID: PMC4910319 DOI: 10.1107/s205698901600356x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 03/01/2016] [Indexed: 11/11/2022]
Abstract
The asymmetric unit of the title complex salt, [Cr(C10H24N4)(NH3)2][ZnCl4]Cl·H2O, is comprised of four halves of the Cr(III) complex cations (the counterparts being generated by application of inversion symmetry), two tetra-chlorido-zincate anions, two chloride anions and two water mol-ecules. Each Cr(III) ion is coordinated by the four N atoms of the cyclam (1,4,8,11-tetra-aza-cyclo-tetra-deca-ne) ligand in the equatorial plane and by two N atoms of ammine ligands in axial positions, displaying an overall distorted octa-hedral coordination environment. The Cr-N(cyclam) bond lengths range from 2.0501 (15) to 2.0615 (15) Å, while the Cr-(NH3) bond lengths range from 2.0976 (13) to 2.1062 (13) Å. The macrocyclic cyclam moieties adopt the trans-III conformation with six- and five-membered chelate rings in chair and gauche conformations. The [ZnCl4](2-) anions have a slightly distorted tetra-hedral shape. In the crystal, the Cl(-) anions link the complex cations, as well as the solvent water mol-ecules, through N-H⋯Cl and O-H⋯Cl hydrogen-bonding inter-actions. The supra-molecular set-up also includes N-H⋯Cl, C-H⋯Cl, N-H⋯O and O-H⋯Cl hydrogen bonding between N-H or C-H groups of cyclam, ammine N-H and water O-H donor groups, and O atoms of the water mol-ecules, Cl(-) anions or Cl atoms of the [ZnCl4](2-) anions as acceptors, leading to a three-dimensional network structure.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Tanaka S, Akitsu T, Choi JH. Crystal structure of hexa-kis-(urea-κO)chromium(III) dichromate bromide monohydrate from synchrotron X-ray data. Acta Crystallogr E Crystallogr Commun 2015; 71:1336-9. [PMID: 26594505 PMCID: PMC4644995 DOI: 10.1107/s2056989015019258] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 10/12/2015] [Indexed: 11/21/2022]
Abstract
The title bromide salt, [Cr{CO(NH2)2}6](Cr2O7)Br·H2O, is isotypic to the corresponding chloride salt. Within the complex cation, the Cr(III) atom is coordinated by six O atoms of six urea ligands, displaying a slightly distorted octa-hedral coordination environment. The Cr-O bond lengths involving the urea ligands are in the range 1.9534 (13)-1.9776 (12) Å. The Cr2O7 (2-) anion has a nearly staggered conformation, with a bridging angle of 130.26 (10)°. The individual components are arranged in rows extending parallel to [100]. The Br(-) anion links the complex cation, as well as the solvent water mol-ecule, through N-H⋯Br and O-H⋯Br hydrogen-bonding inter-actions. The supra-molecular architecture also includes N-H⋯O and O-H⋯O hydrogen bonding between urea N-H and water O-H donor groups and the O atoms of the Cr2O7 (2-) anion as acceptor atoms, leading to a three-dimensional network structure.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Shinnosuke Tanaka
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takashiro Akitsu
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Choi JH. Crystal structure of cis-aqua-chlorido-(rac-5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane-κ(4) N)chromium(III) tetra-chlorido-zincate trihydrate from synchrotron data. Acta Crystallogr E Crystallogr Commun 2015; 71:1054-7. [PMID: 26396846 PMCID: PMC4555385 DOI: 10.1107/s2056989015015212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 08/14/2015] [Indexed: 11/24/2022]
Abstract
The structure of the title compound, cis-[CrCl(cycb)(H2O)][ZnCl4]·3H2O (cycb is rac-5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane; C16H36N4), has been determined from synchrotron data. In the complex cation, the Cr(III) ion is bound by four N atoms from the tetra-dentate cycb ligand, a chloride ion and one water mol-ecule in a cis arrangement, displaying a distorted octa-hedral coordination geometry. The distorted tetra-hedral [ZnCl4](2-) anion and three additional water mol-ecules remain outside the coordination sphere. The Cr-N(cycb) bond lengths are in the range of 2.0837 (14) to 2.1399 (12) Å while the Cr-Cl and Cr-(OH2) bond lengths are 2.2940 (8) and 2.0082 (13) Å, respectively. The crystal packing is stabilized by hydrogen-bonding inter-actions between the N-H groups of the macrocyclic ligand, the O-H groups of the water mol-ecules and the Cl atoms of the tetra-chlorido-zincate anion, leading to the formation of a three-dimensional network.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 36729, Republic of Korea
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Moon D, Ryoo KS, Choi JH. Crystal structure of bis-[trans-(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ(4) N)bis-(thio-cyanato-κN)chromium(III)] tetra-chlorido-zincate from synchrotron data. Acta Crystallogr E Crystallogr Commun 2015; 71:540-3. [PMID: 25995875 PMCID: PMC4420107 DOI: 10.1107/s205698901500746x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 04/16/2015] [Indexed: 11/11/2022]
Abstract
The structure of the title compound, [Cr(NCS)2(cyclam)]2[ZnCl4] (cyclam = 1,4,8,11-tetra-aza-cyclo-tetra-decane, C10H24N4), has been determined from synchrotron data. The asymmetric unit contains two independent halves of the Cr(III) complex cations and half of a tetra-chlorido-zincate anion. In each complex cation, the Cr(III) atom is coordinated by the four N atoms of the cyclam ligand in the equatorial plane and by two N-bound NCS(-) anions in a trans axial arrangement, displaying a distorted octa-hedral geometry with crystallographic inversion symmetry. The mean Cr-N(cyclam) and Cr-N(NCS) bond lengths are 2.065 (4) and 1.995 (6) Å, respectively. The macrocyclic cyclam moieties adopt centrosymmetric trans-III configurations with six- and five-membered chelate rings in chair and gauche configurations, respectively. The [ZnCl4](2-) anion, which lies about a twofold rotation axis, has a slightly distorted tetra-hedral geometry. The crystal packing is stabilized by hydrogen-bonding inter-actions between the N-H groups of the cyclam ligands, the S atoms of the NCS(-) groups and the Cl(-) ligands of the anion.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea
| | - Keon Sang Ryoo
- Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea
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Moon D, Choi JH. Synthesis, conformational structure and spectroscopic properties of trans-diazidobis(2,2-dimethyl-1,3-propanediamine)chromium(III) perchlorate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 138:774-779. [PMID: 25544193 DOI: 10.1016/j.saa.2014.11.099] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 11/19/2014] [Accepted: 11/25/2014] [Indexed: 06/04/2023]
Abstract
A new complex trans-anti-[Cr(Me2tn)2(N3)2]ClO4·2H2O, where Me2tn=2,2-dimethyl-1,3-propanediamine was synthesized and characterized, and its molecular structure was established by single-crystal X-ray diffraction at 95K. The complex crystallized in the space group C2/c of the monoclinic system with four mononuclear formula units in a cell of dimensions a=16.600 (3), b=7.709 (2), c=16.865 (3)Å, and β=99.07 (3)°. The chromium(III) atom was in a distorted octahedral coordination with four N atoms of two chelating Me2tn ligands and two N atoms of the azido group in the trans axial position. The two six-membered rings in the complex adopted only anti chair-chair conformations with respect to each other The important bond lengths are CrN(azide) 2.007 (2), CrN(Me2tn) 2.081 (2), 2.082 (2), NN(azide) 1.184 (2) and 1.156 (2)Å, respectively. The crystal lattice is stabilized by hydrogen bonding interactions among the ClO4(-), hydrate molecule, N3(-), and NH groups of the Me2tn ligand. The ligand field analysis as well as the IR and electronic spectral properties were described.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, South Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 760-749, South Korea.
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Moon D, Choi JH. Crystal structure of cis-aqua-chlorido-bis-(1,10-phenanthroline-κ(2) N,N')chromium(III) tetra-chlorido-zincate monohydrate from synchrotron data. Acta Crystallogr E Crystallogr Commun 2015; 71:288-90. [PMID: 25844190 PMCID: PMC4350701 DOI: 10.1107/s2056989015003266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 02/16/2015] [Indexed: 11/11/2022]
Abstract
The structure of the title compound, [CrCl(C12H8N2)2(H2O)][ZnCl4]·H2O, has been determined from synchrotron data. The Cr(III) ion is bonded to four N atoms from two 1,10-phenanthroline (phen) ligands, one water mol-ecule and a Cl atom in a cis arrangement, displaying an overall distorted octa-hedral coordination environment. The Cr-N(phen) bond lengths are in the range of 2.0495 (18) to 2.0831 (18) Å, while the Cr-Cl and Cr-(OH2) bond lengths are 2.2734 (7) and 1.9986 (17) Å, respectively. The tetra-hedral [ZnCl4](2-) anion is slightly distorted owing to its involvement in O-H⋯Cl hydrogen bonding with coordinating and non-coordinating water mol-ecules. The two types of water mol-ecules also inter-act through O-H⋯O hydrogen bonds. The observed hydrogen-bonding pattern leads to the formation of a three-dimensional network structure.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea
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Subhan MA, Choi JH. X-ray structure and spectroscopy of novel trans-[Ni(L)(NO(3))(2)] and [Ni(L)](ClO(4))(2)·2H(2)O complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:410-415. [PMID: 24412795 DOI: 10.1016/j.saa.2013.12.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/06/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
Ni(L)(NO(3))(2) (complex 1) and [Ni(L)](ClO(4))(2)·2H(2)O (complex 2) [L=3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane] have been prepared and structurally characterized by single-crystal X-ray diffraction at 200K. For these constrained macrocycle complexes, nickel(II) exists in a distorted octahedral environment with the four nitrogen atoms of the macrocyclic ligands and two oxygen atoms from nitrate in axial positions in complex 1. The macrocyclic ligand in complex 1 adopts the most stable trans-III conformation. The Ni-N distances in both the complex 1 (2.094(4)-2.051(4)Å) and complex 2 (2.042(8)-1.996(7)Å), are typical but the axial ligands are coordinating, with NiO bond length, 2.198(3)Å for complex 1. The complex 2 adopts square planner geometry around the Ni(II) with four nitrogen atoms from macrocyclic ligand. The crystals are stabilized in a 3-D network by intra and intermolecular hydrogen bonds that are formed among the secondary nitrogen hydrogen atoms and nitrate in 1, and intermolecular hydrogen bonds are formed by perchlorate and NH groups in 2. The electronic absorption, IR and PL spectral properties are also discussed.
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Affiliation(s)
- Md Abdus Subhan
- Department of Chemistry, Shah Jalal University of Science and Technology, Sylhet, Bangladesh; Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea.
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea.
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Choi JH, Moon D. Synthesis, crystal structure and spectroscopic properties of trans-difluoro(1,4,7,11-tetraazaundecane)chromium(III) perchlorate. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.12.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Moon D, Choi JH, Ryoo KS, Hong YP. cis-(1,4,8,11-Tetra-aza-cyclo-tetra-decane-κN (4))bis(-thio-cyanato-κN)chromium(III) thio-cyanate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m376-7. [PMID: 24046558 PMCID: PMC3772415 DOI: 10.1107/s1600536813015456] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 06/04/2013] [Indexed: 11/20/2022]
Abstract
The crystal structure of [Cr(NCS)2(cyclam)]NCS (cyclam = 1,4,8,11-tetraazacyclotetradecane, C10H24N4) has been determined by using synchrotron radiation at 98 K. The CrIII atom is in a slightly distorted octahedral environment with four N atoms of the macrocyclic ligand and two N-coordinated NCS− anions in cis positions. The average Cr—N(cyclam) and Cr—NCS bond lengths are 2.085 (5) and 1.996 (15) Å, respectively. In the crystal, the uncoordinating SCN− anion is hydrogen bonded through N—H⋯S and N—H⋯N interactions to neighbouring complex cations.
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Affiliation(s)
- Dohyun Moon
- Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea
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Choi JH, Subhan MA, Ng SW. Syntheses, crystal structures, and spectroscopic properties of copper(II) complexes with 3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.07,12)docosane. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.719080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Jong-Ha Choi
- a Department of Chemistry , Andong National University , Andong 760-749 , South Korea
| | - Md Abdus Subhan
- b Department of Chemistry , Shah Jalal University of Science and Technology , Sylhet , Bangladesh
| | - Seik Weng Ng
- c Department of Chemistry , University of Malaya , 50603 Kuala Lumpur , Malaysia
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Ross A, Choi JH, Hunter TM, Pannecouque C, Moggach SA, Parsons S, De Clercq E, Sadler PJ. Zinc(II) complexes of constrained antiviral macrocycles. Dalton Trans 2012; 41:6408-18. [PMID: 22466936 DOI: 10.1039/c2dt30140g] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The configurations of metallocyclams are of interest in relation to protein recognition and anti-HIV activity. We have synthesised four novel zinc(II) complexes with hexyl-Me(2)-cyclam (HMC; 3,14-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane), 1, and naphthyl-hexyl-Me(2)-cyclam (NHMC; 2,13-bis(1-naphthylmethyl)-5,16-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane), 2, as ligands. X-ray crystallographic data for Zn(II)-HMC diacetate, 3 show that zinc is six-coordinate in a distorted octahedral environment bound to four equatorial N atoms from the macrocycle and two axial acetato O atoms. The 14-membered metallo-macrocycle adopts a trans-III (RRSS) configuration with two six-membered rings in chair forms and two five-membered rings in gauche forms. In the chlorido Zn(II)-HMC complex 5, zinc appears to be 5-coordinate with square-pyramidal geometry. Interestingly, the chlorido Zn(II)-NHMC complex 6 crystallised in a trans-I configuration containing 4-coordinate tetrahedral zinc bound to three cyclam ring N atoms, a possible model for intermediates formed during the uptake and release of metals by cyclams. The ligand 1 and the zinc complex 3 were active towards viral strains HIV-1 (III(B)) (IC(50) values of 10.51 ± 0.23 and 3.50 ± 0.33 μM, respectively), and HIV-2 (ROD) (IC(50) values of 133.78 ± 14.10 and >110.67 μM, respectively). 2D [(1)H, (13)C] and [(1)H, (15)N] NMR spectroscopic studies suggested that the types of configurational isomers present in solution depend on the axial ligand.
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Affiliation(s)
- Allison Ross
- School of Chemistry, University of Edinburgh, Edinburgh, UK
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Choi JH, Takayama A, Suzuki T. Crystal structure and spectroscopic properties of trans-dichlorobis(1,3-propane-diamine)chromium(III) perchlorate. J STRUCT CHEM+ 2012. [DOI: 10.1134/s0022476612020291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Choi JH, Joshi T, Spiccia L. Syntheses, Structural, and Spectroscopic Properties of Copper(II) Complexes of Constrained Macrocyclic Ligands. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100398] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Choi JH, Subhan MA, Ng SW. Crystal Structure and Spectroscopic Properties of trans-Dibromidobis(propane-1, 3-diamine)chromium(III) Perchlorate. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100372] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Synthesis, Crystal Structure and Spectroscopic Properties of (Acetylacetonato)(1,4,8,11-tetraazacyclotetradecane)chromium(III) Diperchlorate. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100423] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Choi JH, Joshi T, Spiccia L. Crystal Structure and Spectroscopic Properties of Bis[trans-dichlorobis(2,2-dimethylpropane-1,3-diamine)chromium(III)] Tetrachlorozincate. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Choi JH, Clegg W, Nichol G. Synthesis, Crystal Structure and Spectroscopic Properties of [2,13-Bis(1-naphthalenylmethyl)-5,16-dimethyl-2,6,13,17-tetraazatricyclo(14,4,01.18,07.12)docosane]copper(II) Diperchlorate Acetonitrile Disolvate. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900551] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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