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Thanasekaran P, Lin B, Valaboju A, Lan C, Chang C, Lee C, Wu J, Bhattacharya D, Tseng T, Lee H, Hsu C, Lu K. Molecular mechanics of glove‐like re(I) metallacycles: Toward light‐activated molecular catchers. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Bo‐Chao Lin
- Institute of Chemistry, Academia Sinica Taipei Taiwan
| | | | | | - Che‐Hao Chang
- Institute of Chemistry, Academia Sinica Taipei Taiwan
| | - Chung‐Chou Lee
- Material and Chemical Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan
| | - Jing‐Yun Wu
- Department of Applied Chemistry National Chi Nan University Nantou Taiwan
| | | | - Tien‐Wen Tseng
- Department of Chemical Engineering National Taipei University of Technology Taipei Taiwan
| | | | - Chao‐Ping Hsu
- Institute of Chemistry, Academia Sinica Taipei Taiwan
- Division of Physics National Center for Theoretical Sciences Taipei Taiwan
| | - Kuang‐Lieh Lu
- Institute of Chemistry, Academia Sinica Taipei Taiwan
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2
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Mhaidat I, Alwedian F, Ababneh T, Shdefat A, Tashtoush H. Synthesis, characterization, computational, antioxidant and fluorescence properties of novel 1,3,5-trimesic hydrazones derivatives. Heliyon 2021; 7:e08074. [PMID: 34622075 PMCID: PMC8482428 DOI: 10.1016/j.heliyon.2021.e08074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 12/22/2022] Open
Abstract
New photophysical and antioxidant materials of trimesic trihydrazide derivatives were synthesized by one-pot stage of trimesic trihydrazide and different aromatic aldehydes. All compounds were characterized by spectroscopic techniques (NMR, MS, and IR) and elemental analysis. The absorption and emission spectral characteristics of hydrazone derivatives were investigated. The absorption maxima showed red shift relative to the starting compound. While the emission maxima showed clear dependent on the type of substituents. The electron donating and electron withdrawing showed red and blue shifts relative to the starting compound, respectively. The compounds’ effectiveness as antioxidant was estimated by DPPH radical scavenging and ABTS radical cation assays in vitro which indicated that the derivatives could be used as potential antioxidants. In addition, compounds 3g, and 3i showed strong antioxidant activities according to the DPPH assay and compounds 3c and 3m exhibited good antioxidant activities in ABTS assay. Antimicrobial activity of the derivatives was estimated using a micro-broth dilution method. Furthermore, molecular geometries of all prepared derivatives were fully optimized using density functional theory (DFT) calculations at the 6-31G(d)/B3LYP level of theory.
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Affiliation(s)
- Ibrahim Mhaidat
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, 1163, Jordan
| | - Fadel Alwedian
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, 1163, Jordan
| | - Taher Ababneh
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, 1163, Jordan
| | - Ayman Shdefat
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, 1163, Jordan
| | - Hasan Tashtoush
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, 1163, Jordan
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3
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Yadav S, Natarajan M, Sathiyendiran M, Kaur-Ghumaan S. Electrochemical aspects of restricted rhenium(I)-based supramolecular complexes with semi-rigid benzimidazolyl and rigid hydroxyquinone ligands. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1689-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Kumar CK, Deval Sathiyashivan S, Masram DT, Jose KVJ, Sathiyendiran M. Experimental and theoretical investigation of intramolecular cooperativity in cyclic benzene trimer motif. RSC Adv 2019; 9:753-760. [PMID: 35517582 PMCID: PMC9059549 DOI: 10.1039/c8ra06647g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 12/18/2018] [Indexed: 12/04/2022] Open
Abstract
A series of new symmetrical tripodal molecules 1a–4b with a central benzene scaffold substituted with methyl/ethyl groups and three benzimidazolyl units having a bithiophene/biphenyl/5-alkylthiophene motif at the 2-position via a –CH2– unit were synthesized and characterized by elemental analysis, HR-MS, and NMR spectroscopy. NMR spectral data reveal that all molecules adopt a cyclic benzene trimer (CBT) using three benzimidazolyl units. Intramolecular cooperative edge-to-face C–H⋯π interactions stabilize the CBT motif in solution and are strong in ethyl substituted molecules (1b–4b) compared to methyl substituted (1a–4a) ones. However, the strength of the CBT unit in the tripodal molecule is independent of the length of the substituent at the 2-position of the benzimidazolyl unit. The relative 1H NMR chemical shift calculated at the MPW1PW91/6-311+G(d,p) level of theory corroborates the experimental values, and the calculations predict the distribution of the structures into syn isomers. The relative change in the NMR chemical shift is justified by the relative change in the magnitude of the (3,+3) critical point (CP) in the molecular electrostatic potential (MESP) topography. Also, a linear correlation of the intramolecular C–H⋯π interactions evaluated at M062X/6-311+G(d,p) with the relative NMR chemical shift suggest the latter as a measure of intramolecular cooperativity. A family of biaryl/alkylthiophene (R–R) benzimidazolyl-based tripodal molecules with cyclic benzene trimer (CBT) motif was synthesized and studied by NMR spectroscopy and MPW1PW91/6-311+G(d,p) theory.![]()
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5
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Gupta D, Sathiyendiran M. Rhenium‐Carbonyl‐Based Supramolecular Coordination Complexes: Synthesis, Structure and Properties. ChemistrySelect 2018. [DOI: 10.1002/slct.201800904] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Deepak Gupta
- Department of ChemistryBhaskaracharya College of Applied SciencesUniversity of Delhi, Sector-2 Dwarka New Delhi-110075 India
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6
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Wu JY, Zhong MS, Chiang MH. Anion-Directed Metallocages: A Study on the Tendency of Anion Templation. Chemistry 2017; 23:15957-15965. [PMID: 28895232 DOI: 10.1002/chem.201702848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Indexed: 11/08/2022]
Abstract
Self-assembly of Cu(NO3 )2 ⋅3 H2 O and di(3-pyridylmethyl)amine (dpma) with addition of different acids (HNO3 , HOAc, HCl, HClO4 , HOTf, HPF6 , HBF4 , and H2 SO4 ) afforded a family of anion-templated tetragonal metallocages with a cationic prismatic structure of [(Gn- )⊂{Cu2 (Hdpma)4 }](8-n)+ (Gn- =NO3- , PF6- , SiF62- ) with different ligating anions/solvents (NO3- , Cl- , ClO4- , OTf- , H2 O) outside the cage. Systematic competitive experiments have rationalized the tendency of anion templation towards the formation of metallocages [(Gn- )⊂{Cu2 (Hdpma)4 }](8-n)+ as occurring in the order SiF62- ≈PF6- >NO3- >SO42- ≈ClO4- ≈BF4- . This sequence is mostly elucidated by shape control over size selectivity and electrostatic attraction between the cationic {Cu2 (Hdpma)4 }8+ host and the anionic guests. In addition, these results have also roughly ranked the anion coordination ability in the order Cl- , ClO4- , OTf- >NO3- >BF4- , CH3 SO4- . Magnetic studies of metallocages 1 t and 2-4 suggest that the fitted magnetic interaction, being weakly magnetically coupled overall, is interpreted as a result of the combination of intracage ferromagnetic coupling integrals and intercage antiferromagnetic exchange; both contributions are very weak and comparable in strength.
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Affiliation(s)
- Jing-Yun Wu
- Department of Applied Chemistry, National Chi Nan University, Nantou, 545, Taiwan
| | - Ming-Shiou Zhong
- Department of Applied Chemistry, National Chi Nan University, Nantou, 545, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
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7
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Basappa Chidananda VK, Ramakrishna D, Kaur M, Hosakere Doddarevanna R. Benzimidazolyl based Schiff base palladium complex in an ionic liquid: an effective combination for Suzuki coupling. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1311412] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Dileep Ramakrishna
- Department of Chemistry, School of Engineering Presidency University, Bengaluru, India
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, Keene, NH, USA
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8
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Krawczyk MK, Bikas R, Krawczyk MS, Lis T. On rhenium(i)–silver(i) cyanide porous macrocyclic clusters. CrystEngComm 2017. [DOI: 10.1039/c7ce00646b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The first cyanide rhenium(i)–silver(i) clusters were synthesized in the course of simple one-pot high-yielding reactions.
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Affiliation(s)
- Monika K. Krawczyk
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
- Institute of Experimental Physics
| | - Rahman Bikas
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
- Department of Chemistry, Faculty of Science
| | - Marta S. Krawczyk
- Department of Analytical Chemistry, Faculty of Pharmacy
- Wrocław Medical University
- 50-556 Wrocław
- Poland
| | - Tadeusz Lis
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
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9
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Sathiyashivan SD, Kumar CK, Shankar B, Sathiyendiran M, Masram DT. Perfect symmetrical cyclic aromatic trimer motif in tripodal molecule. RSC Adv 2017. [DOI: 10.1039/c7ra01682d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A family of substituted benzimidazolyl-based tripodal molecules with alkyl substituted spacers was synthesized, showing perfect symmetric cyclic aromatic trimer motifs which remained intact in the solid as well as solution state.
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10
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Shankar B, Marimuthu R, Deval Sathiyashivan S, Sathiyendiran M. Spheroid Metallacycles and Metallocavitands with Calixarene- and/or Cleft-Shaped Receptors on the Surface. Inorg Chem 2016; 55:4537-44. [PMID: 27099992 DOI: 10.1021/acs.inorgchem.6b00371] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Flexible hexatopic ligands, 1,2,3,4,5,6-hexakis(1H-naphtho[2,3-d]imidazol-1-ylmethyl)benzene (L(2)) and 1,2,3,4,5,6-hexakis(4,5-diphenylimidazol-1-ylmethyl)benzene (L(3)), containing six neutral naphthanoimidazolyl and 4,5-diphenylimidazolyl N donors were synthesized and used to assemble M6L6L'-type [M = Re(CO)3, L = anionic angular rigid NN donors, and L' = flexible hexatopic N donors] spheroid metallacycles. These molecules with a diameter of ∼17 Å were obtained from Re2(CO)10, H-L (imidazole, benzimidazole, and naphthanoimidazole), and L' [1,2,3,4,5,6-hexakis(benzimidazol-1-ylmethyl)benzene (L(1)), L(2), and L(3)] in a one-step process. Ligands L(2) and L(3) were characterized by elemental analysis, electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), and (1)H NMR spectroscopy. Metallacycles 1-5 were characterized by elemental analysis, ESI-TOF-MS, Fourier transform infrared spectroscopy, and single-crystal X-ray diffraction analysis. Molecules 1, 2, and 4 can be considered as metallocavitands and contain multiple solvent-accessible receptors, i.e., two metallocalix[3]arene units and six/four calix[4]arene-/cleft-shaped receptors, on the surface. Guests such as acetone molecules could be accommodated in the calix[4]arene/cleft-shaped receptor of the metallocavitands.
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Affiliation(s)
- Bhaskaran Shankar
- School of Chemistry, University of Hyderabad , Hyderabad 500 046, India
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11
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Pradhan S, John RP. Self-assembled Pd6L4 cage and Pd4L4 square using hydrazide based ligands: synthesis, characterization and catalytic activity in Suzuki–Miyaura coupling reactions. RSC Adv 2016. [DOI: 10.1039/c6ra00055j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A new self-assembled Td-symmetric cage, Pd6L4, and a square assembly, Pd4L4, were constructed using hydrazide based ligands and cis-blocked palladium(ii). Both act as efficient heterogeneous catalysts for Suzuki–Miyaura coupling.
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Affiliation(s)
- Subhashis Pradhan
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad – 826004
- India
| | - Rohith P. John
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad – 826004
- India
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12
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Ramakrishna B, Divya D, Monisha PV, Manimaran B. Self-Assembly of Oxamidato-Chelated ReI- and MnI-Based Flexible Dinuclear Horse-Stirrup-Like Metallacycles. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500962] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Elumalai P, Kanagaraj R, Marimuthu R, Shankar B, Kalita AC, Sathiyendiran M. Rhenium(I)-based bridgeless double metallocalix[4]arenes. Dalton Trans 2015; 44:11274-7. [PMID: 26051960 DOI: 10.1039/c5dt00841g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Bridgeless double metallocalix[4]arenes possessing two orthogonally arranged dinuclear cavitands were obtained from a Re2(CO)10, rigid bis-chelating OO donor (H2-L), and a flexible bis-ditopic NN donor (L') by a one-pot approach.
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Affiliation(s)
- Palani Elumalai
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India.
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14
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Sathiyashivan SD, Shankar B, Rajakannu P, Vishnoi P, Masram DT, Sathiyendiran M. Steric group enforced aromatic cyclic trimer conformer in tripodal molecules. RSC Adv 2015. [DOI: 10.1039/c5ra05151g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A family of tripodal molecules (1–6) with/without steric ethyl groups at the central benzene scaffold and with furan/thiophene/pyridyl groups at the 2-position of the benzimidazolyl unit was synthesised.
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Affiliation(s)
| | | | | | - Pratap Vishnoi
- Department of Chemistry
- Indian Institute of Technology Bombay
- India
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15
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Ramakrishna B, Nagarajaprakash R, Veena V, Sakthivel N, Manimaran B. Self-assembly of oxamidato bridged ester functionalised dirhenium metallastirrups: synthesis, characterisation and cytotoxicity studies. Dalton Trans 2015; 44:17629-38. [DOI: 10.1039/c5dt02205c] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hetero-topic self-assembly of Re2(CO)10 with oxamide ligands and ester-functionalised flexible ditopic-tectons afforded dinuclear metallacycles resembling a stirrup. The metallastirrups showed promising cytotoxic activity against few cancer cell lines in vitro.
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Affiliation(s)
| | | | - V. Veena
- Department of Biotechnology
- Pondicherry University
- Puducherry
- India
| | - N. Sakthivel
- Department of Biotechnology
- Pondicherry University
- Puducherry
- India
| | - Bala. Manimaran
- Department of Chemistry
- Pondicherry University
- Puducherry
- India
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16
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Neutral discrete metal–organic cyclic architectures: Opportunities for structural features and properties in confined spaces. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.07.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Rajakannu P, Mobin SM, Sathiyendiran M. Thiophene/furan units decorated unsymmetrical dinuclear metallocalix[4]arenes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.03.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Tripuramallu BK, Manna P, Das SK. Structural library of coordination polymers based on flexible linkers exploiting the role of linker coordination angle: synthesis, structural characterization and magnetic properties. CrystEngComm 2014. [DOI: 10.1039/c3ce42637h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The linker coordination angles observed in the crystal structures of a new series of coordination polymers of flexible linkers, are correlated with their dimensionality and topology.
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Affiliation(s)
| | - Paulami Manna
- School of Chemistry
- University of Hyderabad
- P.O. Central University
- Hyderabad- 500046, India
| | - Samar K. Das
- School of Chemistry
- University of Hyderabad
- P.O. Central University
- Hyderabad- 500046, India
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19
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Shankar B, Elumalai P, Jackmil PJ, Kumar P, Singh S, Sathiyendiran M. Synthesis of rhenium-based M2LL′-type supramolecular coordination complexes from flexible ligands. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.06.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Zhang JW, Gong CH, Hou LL, Tian AX, Wang XL. Aromatic carboxylate effect on dimensionality of three bis(benzimidazole)-based cobalt(II) coordination polymers: Syntheses, structures and properties. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.07.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Thanasekaran P, Huang CY, Lu KL. Synthesis, Structure, and Dynamic Behavior of Discrete Metallacyclic Rotors. CHEM LETT 2013. [DOI: 10.1246/cl.130455] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Effect of organic bicarboxylates on the structures of cobalt(II) coordination polymers derived from a semi-rigid bis(benzimidazole) derivative. TRANSIT METAL CHEM 2013. [DOI: 10.1007/s11243-013-9692-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Chakraborty S, Mondal S, Li Q, Das N. Synthesis and characterization of triptycene based tripods and design of a metallasupramolecular cage. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Rajakannu P, Elumalai P, Hussain F, Sathiyendiran M. Rhenium-based bicyclic supramolecule with calixarene-shaped bowls. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.11.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Sathish V, Babu E, Ramdass A, Lu ZZ, Chang TT, Velayudham M, Thanasekaran P, Lu KL, Li WS, Rajagopal S. Photoswitchable alkoxy-bridged binuclear rhenium(i) complexes – a potential probe for biomolecules and optical cell imaging. RSC Adv 2013. [DOI: 10.1039/c3ra42627k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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26
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Elumalai P, Rajakannu P, Hussain F, Sathiyendiran M. Design strategy for arranging an aromatic cyclic trimer into a tripodal molecule. RSC Adv 2013. [DOI: 10.1039/c2ra22679k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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27
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Synthesis of rhenium-based M3L3L′-type metallacycle from benzimidazole and flexible tri(benzimidazole) ligands. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.08.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Thanasekaran P, Lee CC, Lu KL. One-step orthogonal-bonding approach to the self-assembly of neutral rhenium-based metallacycles: synthesis, structures, photophysics, and sensing applications. Acc Chem Res 2012; 45:1403-18. [PMID: 22721174 DOI: 10.1021/ar200243w] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Self-assembled metallacycles offer structural diversity and interesting properties based on their unique frameworks and host-guest chemistry. As a result, the design and synthesis of these materials has attracted significant research interest. This Account describes our comprehensive investigations of an effective orthogonal-bonding approach for the self-assembly of neutral Re-based metallacycles. We discuss the various types of assemblies that can be created based on the nuclearity of the luminophore, including bimetallic materials, rectangles, cages, and calixarenes. This approach permits the preparation of a rectangular molecule, rather than two molecular squares, in excellent yields. We extended this strategy to the high yield synthesis of a series of Re-based metallacycles with different shapes. With the rich spectroscopic and luminescence properties, Re(I) metallacycles provide an excellent platform for studies of host-guest interactions. When possible, we also present potential applications of the luminescent Re-based metallosupramolecular assemblies. The orthogonal-bonding approach involves the simultaneous introduction of two ligands: a bis-chelating ligand to coordinate to two equatorial sites of two fac-(CO)(3)Re cores and a monotopic or ditopic nitrogen-donor ligand to the remaining orthogonal axial site. Furthermore, by the appropriate choice of the predesigned organic ligands with various backbones and connectivity information and fac-Re(CO)(3) metal centers, we could also design other novel functional metallacycles including rotors, gondolas, cages, triangles, and metallacalixarenes in high yields. The incorporation of flexible ligands into the Re(I) metallacycles allows us to introduce various conformation states and novel structures. As a result, these structures acquire new functions, such as adaptive recognition properties. For example, we assembled Re(I)-based metallacyclic rotors via a one-step process. These rotors, which contain a para-phenylene unit that rapidly rotates within the metallacycles, are prototypes of a neutral altitudinal rotor. Most of the metallacycles are luminescent. The ability to chemically modify the organic ligands offers opportunities to create structural diversity and to tune the photophysical properties of these Re(I) metallacycles efficiently. Several strategies for increasing emission quantum yields and excited-state lifetimes and tuning the colors in Re(I) metallacycles are available. The cyclometalated ligands in Re(I) metallacycles improve excited state lifetimes and quantum yields, and these C-H bond-activated metallacycles are considerably more emissive than their non-C-H bond-activated analogues. The introduction of crown-ether-like recognition sites into neutral gondola-shaped metallacycles that selectively recognize metal ions also enhanced emission. Rhenium-based rectangular boxes, synthesized via a simple one-step route, contain a large and tunable hydrophobic inner cavity, which selectively recognizes benzene molecules. Such structures were the best host for benzene reported to date. In addition, we designed and synthesized novel neutral metallacalixarenes with tunable size, cavity, color, and functionality. These structures are efficient hosts for the recognition of planar aromatic guests.
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Affiliation(s)
| | - Chung-Chou Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
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29
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Rajakannu P, Shankar B, Yadav A, Shanmugam R, Gupta D, Hussain F, Chang CH, Sathiyendiran M, Lu KL. Adaptation toward Restricted Conformational Dynamics: From the Series of Neutral Molecular Rotors. Organometallics 2011. [DOI: 10.1021/om200269z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | - Anju Yadav
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | | | - Deepak Gupta
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Firasat Hussain
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Che-Hao Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Republic of China
| | | | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Republic of China
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Shankar B, Rajakannu P, Kumar S, Gupta D, Kannan T, Sathiyendiran M. Self-assembled tetranuclear metallacyclic chair using orthogonal tritopic acceptors, angular ditopic donors, and bischelating bridging motifs. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2010.12.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gupta D, Rajakannu P, Shankar B, Shanmugam R, Hussain F, Sarkar B, Sathiyendiran M. Furan-decorated neutral Re(i)-based 2D rectangle and 3D trigonal prism. Dalton Trans 2011; 40:5433-5. [DOI: 10.1039/c0dt01227k] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Bhattacharya D, Sathiyendiran M, Wu JY, Chang CH, Huang SC, Zeng YL, Lin CY, Thanasekaran P, Lin BC, Hsu CP, Lee GH, Peng SM, Lu KL. Quinonoid-Bridged Chair-Shaped Dirhenium(I) Metallacycles: Synthesis, Characterization, and Spectroelectrochemical Studies. Inorg Chem 2010; 49:10264-72. [DOI: 10.1021/ic9018794] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | | | - Jing-Yun Wu
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Che-Hao Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Sung-Chou Huang
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Yu-Ling Zeng
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Ching-Yao Lin
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | | | - Bo-Chao Lin
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Chao-Ping Hsu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
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Tseng YH, Bhattacharya D, Lin SM, Thanasekaran P, Wu JY, Lee LW, Sathiyendiran M, Ho ML, Chung MW, Hsu KC, Chou PT, Lu KL. Highly Emissive Cyclometalated Rhenium Metallacycles: Structure−Luminescence Relationship. Inorg Chem 2010; 49:6805-7. [DOI: 10.1021/ic100882u] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yi-Hsiu Tseng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, National Taiwan Normal University, Taipei 106, Taiwan
| | | | - Shih-Ming Lin
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | | | - Jing-Yun Wu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Li-Wei Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | | | - Mei-Lin Ho
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Min-Wen Chung
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Kung-Chung Hsu
- Department of Chemistry, National Taiwan Normal University, Taipei 106, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
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35
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Bar AK, Chakrabarty R, Mukherjee PS. Self-Assembly of a Pd6−Molecular Double-Square and a Cu3-Trigonalbipyramidal Cage via a New Tripodal Flexible Ligand. Inorg Chem 2009; 48:10880-2. [DOI: 10.1021/ic901633g] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Arun Kumar Bar
- Inorganic and Physical Chemistry Department, Indian Institute of Sciences, Bangalore-560012, India
| | - Rajesh Chakrabarty
- Inorganic and Physical Chemistry Department, Indian Institute of Sciences, Bangalore-560012, India
| | - Partha Sarathi Mukherjee
- Inorganic and Physical Chemistry Department, Indian Institute of Sciences, Bangalore-560012, India
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