Syntheses, crystal structures, and spectroscopic properties of copper(II) complexes with 3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.0<sup>7,12</sup>)docosane

Choi, Jong‐Ha; Subhan, Abdus; Ng, Seik Weng

doi:10.1080/00958972.2012.719080

Cited by 19 publications

(9 citation statements)

References 49 publications

(75 reference statements)

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“…Recently we have reported on synthesis, structural, spectroscopy as well as biological activities of metal complexes containing macrocyclic and phendione ligands [20][21][22] O complexes with anionic surfactant SDS and to reveal the effect of these complexes on the micellar properties of SDS by the measurement of specific conductance, the most widely used method to locate the CMC's of ionic surfactants.…”

Section: Introductionmentioning

confidence: 99%

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

2014

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The effect of some biologically significant transition metal complexes such as [Fe(bpy) ,14-diethyl-2,6,13,17-tetraazatricyclo (16,4,0 7,12 )docosane, bpy=2,2′-bipyridine, PD =1,10-phenanthroline-5,6-dione, phen=1,10-phenanthroline) on the critical micelle concentration (CMC) of an anionic surfactant, sodium dodecyl sulfate (SDS) were studied by conductance measurement method. The investigation was performed in the additives concentration ranging from 2.0 × 10 -4 M to 8.0 × 10 -4 M and at temperature ranging from 20°C to 35°C with an interval of 5°C. Different micellar parameters such as CMC, degree of counter ion dissociation (α), degrees of counter ion binding (f), binding constant (K b) as well as thermodynamic parameters were determined using the conductivity data.

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Section: Introductionmentioning

confidence: 99%

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

2014

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“…The Cu-N distances of 2.018 (3) and 2.049 (3) Å can be compared to related complexes in Table 3. [19]. The Cu1-OW bond was not perpendicular to the CuN4 plane, with actual N1-Cu1-O1W and N2-Cu1-O1W angles of 88.22 (11) and 95.89(11) • , respectively.…”

Section: X-ray Crystallographymentioning

confidence: 96%

“…For example, crystallographic analysis of [Cu(L 2 )](ClO4)2 revealed that the copper(II) ion was tetracoordinated in a square planar configuration somewhat distorted towards tetrahedral geometry [15] whereas the [Cu(L 3 )](ClO4)2•2CH3CN had a square planar geometry [16]. The structural and physical properties of the Cu(II) and Ni(II) complexes with macrocycles containing cyclohexane ring and ethyl group were also reported [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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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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“…Selected geometric parameters (Å , ). (Choi et al, 2012). The relatively long axial bond in (I) is due to a combination of the Jahn-Teller effect, the low doping content of Cu 2+ and the strong inplane ligand field.…”

Section: Tablementioning

confidence: 98%

Synthesis, structural characterization, EPR spectroscopy and Hirshfeld surface analysis of a novel Cu²⁺-doped 3,14-diethyl-2,13-diaza-6,17-diazoniatricyclo[16.4.0.0^7,12]docosane bis(perchlorate)

et al. 2019

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Cyclam derivatives and their metal complexes have been found to exhibit an anti‐HIV effect and stimulate the activity of stem cells from bone marrow. The strength of their binding to the CXCR4 receptor correlates with anti‐HIV and stem‐cell activities. Knowledge of the conformation and crystal packing of various macrocyclic metal complexes has become important in developing new effective anti‐HIV drugs. The synthesis and preparation of single crystals of a new Cu2+‐doped macrocyclic compound, (3,14‐diethyl‐2,6,13,17‐tetraazatricyclo[16.4.0.07,12]docosane)copper(II) bis(perchlorate)–3,14‐diethyl‐2,13‐diaza‐6,17‐diazoniatricyclo[16.4.0.07,12]docosane bis(perchlorate) (0.69/0.31), {[Cu(C22H44N4)](ClO4)2}0.69·(C22H46N42+·2ClO4−)0.31, is reported. Characterization by X‐ray diffraction analysis shows that the asymmetric unit contains half of a centrosymmetric molecule. The macrocyclic ligand in the compound adopts the most stable trans‐III conformation. The Cu—N distances of 2.015 (3) and 2.047 (3) Å are normal, but the long axial Cu—O bond of 2.795 (3) Å may be due to a combination of the Jahn–Teller effect and the strong in‐plane ligand field. The crystal structure is stabilized by hydrogen bonding between secondary N—H groups, the N atoms of the macrocycle and the O atoms of the perchlorate anions. Hirshfeld surface analysis with 2D (two‐dimensional) fingerprint plots indicates that the main contributions to the crystal packing are from H…H (58.0%) and H…O/O…H (41.9%) interactions. Electron paramagnetic resonance (EPR) properties are also described.

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Syntheses, crystal structures, and spectroscopic properties of copper(II) complexes with 3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.0^7,12)docosane

Cited by 19 publications

References 49 publications

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

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

Synthesis, structural characterization, EPR spectroscopy and Hirshfeld surface analysis of a novel Cu²⁺-doped 3,14-diethyl-2,13-diaza-6,17-diazoniatricyclo[16.4.0.0^7,12]docosane bis(perchlorate)

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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

Cited by 19 publications

References 49 publications

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

Effect of Biologically Significant Metal Complex Additives on the Micellar Properties of SDS

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

Synthesis, structural characterization, EPR spectroscopy and Hirshfeld surface analysis of a novel Cu2+-doped 3,14-diethyl-2,13-diaza-6,17-diazoniatricyclo[16.4.0.07,12]docosane bis(perchlorate)

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Syntheses, crystal structures, and spectroscopic properties of copper(II) complexes with 3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.0^7,12)docosane

Synthesis, structural characterization, EPR spectroscopy and Hirshfeld surface analysis of a novel Cu²⁺-doped 3,14-diethyl-2,13-diaza-6,17-diazoniatricyclo[16.4.0.0^7,12]docosane bis(perchlorate)