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Phukon U, Kedia M, Shankar B, Sathiyendiran M. Rhenium-Pyrazolyl-Based Figure-Eight- and Z-Shaped Metallocycles: Self-Assembly, Solid-State Structures, Dynamic Properties in Solution, and Competitive Ligand-Induced Supramolecular Transformations into Rhenium-Pyridyl/-Benzimidazolyl/-Phosphine-Based Metallocycles/Acyclic Complexes. ACS OMEGA 2023; 8:41773-41784. [PMID: 37969972 PMCID: PMC10633831 DOI: 10.1021/acsomega.3c06371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/23/2023] [Accepted: 10/10/2023] [Indexed: 11/17/2023]
Abstract
Rhenium(I)tricarbonyl core-based heteroleptic "figure-eight"- and Z-shaped metallocycles (1a-4a) of the general formula fac-[{(CO)3Re(μ-L)Re(CO)3}2(dppz)2] were self-assembled from Re2(CO)10, H2-L (H2-L = 5,8-dihydroxy-1,4-naphthaquinone (H2-dhnq) for 1a; 1,4-dihydroxy-9,10-anthraquinone (H2-dhaq) for 2a; 6,11-dihydroxy-5,12-naphthacenedione (H2-dhnd) for 3a; 2,2'-bisbenzimidazole (H2-bbim) for 4a), and bis(4-((pyrazolyl)methyl)phenylmethane) (dppz) via one-pot coordination-driven synthetic approach. The molecular structures of 1a and 4a were unambiguously confirmed by single-crystal X-ray diffraction (SC-XRD) methods. The metallocycles in the DMSO solution exist as an acyclic dinuclear-DMSO adduct of the general formula fac-[{(CO)3Re(μ-L)Re(CO)3}(DMSO)2] (1b, L = dhnq; 2b, L = dhaq; 3b, L = dhnd; 4b, L = bbim) and dppz, which are in dynamic equilibrium. The dynamic behavior of the rhenium-pyrazolyl bond in the solution state was effectively utilized to transform metallocycles 1a-4a into pyridyl/benzimidazolyl/phosphine donor-based heteroleptic metallocycles and acyclic dinuclear complexes (4-13). These include tetranuclear rectangles fac-[{(CO)3Re(μ-L)Re(CO)3}2(4,4'-bpy)2] (4 and 11, L = dhaq for 4 and bbim for 11), dinuclear metallocycles fac-[{(CO)3Re(μ-L)Re(CO)3}(dpbim)] (5-7 and 12; L = dhnq for 5, dhaq for 6, dhnd for 7, and bbim for 12), and dinuclear acyclic complexes fac-[{(CO)3Re(μ-L)Re(CO)3}(PTA)2] (8-10 and 13; L = dhnq for 8, dhaq for 9, dhnd for 10, and bbim for 13). These transformations were achieved through component-induced supramolecular reactions while treating with competitive ligands 4,4'-bipyridine (4,4'-bpy), bis(4-((1H-benzoimidazole-1-yl)methyl)phenyl)methane (dpbim), and 1,3,5-triaza-7-phosphaadamantane (PTA). The reaction mixture in the solution was analyzed using NMR and electrospray ionization mass spectrometry (ESI-MS) analysis. Additionally, crystal structures of 4, 6, and 13, which were obtained in the mixture of the solutions, were determined, providing unequivocal evidence for the occurrence of supramolecular transformation within the system. The results reveal that the size of the chelating ligand and the pyrazolyl donor angle of the ditopic ligand play crucial roles in determining the resulting solid-state metallacyclic architecture in these synthetic combinations. The dynamic behavior of the rhenium-pyrazolyl bond in the metallocycles can be utilized to transform into other metallocycles and acyclic complexes using suitable competing ligands via ligand-induced supramolecular transformations.
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Affiliation(s)
- Upasana Phukon
- School
of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Moon Kedia
- School
of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Bhaskaran Shankar
- Department
of Chemistry, Thiagarajar College of Engineering, Madurai 625 015, India
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2
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Smith RA, Kulmaczewski R, Halcrow MA. Ligand-Directed Metalation of a Gold Pyrazolate Cluster. Inorg Chem 2023. [PMID: 37285352 DOI: 10.1021/acs.inorgchem.3c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Solid "[AuL]" (HL = 3-[pyrid-2-yl]-5-tertbutyl-1H-pyrazole) can be crystallized as cyclic [Au3(μ-L)3] and [Au4(μ-L)4] clusters from different solvents. The crystalline tetramer contains a square Au4 core with an HT:TH:TH:HT arrangement of ligand substituents, which preorganizes the cluster to chelate to additional metal ions via its pendant pyridyl groups. The addition of 0.5 equiv of AgBF4 to [AuL] yields [Ag2Au4(μ3-L)4][BF4]2, where two edges of the Au4 square are spanned by Ag+ ions via metallophilic Ag···Au contacts. Treatment of [AuL] with [Cu(NCMe)4]PF6 affords the metalloligand helicate [Cu2Au2(μ-L)4][PF6]2, via oxidation of the copper and partial fragmentation of the cluster.
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Affiliation(s)
- Ryan A Smith
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
| | - Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
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3
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Alkorta I, Benito MT, Elguero J, Doyagüez EG, Patterson MR, Jimeno ML, Dias HVR, Reviriego F. The use of DOSY experiments to determine the solution structures of coinage metal pyrazolates: The case of {[3,5-(CF 3 ) 2 Pz]Ag} 3. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:442-451. [PMID: 34935188 DOI: 10.1002/mrc.5242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 12/14/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
A series of DOSY experiments have been carried out to determine the solution stoichiometry of silver(I) 3,5-bis (trifluoromethyl)pyrazolate species. This compound exists as a trimer in the solid state (n = 3) but in solutions of chlorinated solvents, the DOSY data suggest the presence of a mixture of solvent stabilized monomer (n = 1) and dimer (n = 2) in equilibrium. Different approximations have been used including the Stokes-Einstein and the Stokes-Einstein-Gierer-Wirtz equations. Some methodological problems are discussed.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica, CSIC, Madrid, Spain
| | - María Teresa Benito
- Servicio de Resonancia Magnética Nuclear, Centro de Química Orgánica 'Lora-Tamayo', CSIC, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, CSIC, Madrid, Spain
| | - Elisa García Doyagüez
- Servicio de Resonancia Magnética Nuclear, Centro de Química Orgánica 'Lora-Tamayo', CSIC, Madrid, Spain
| | - Monika R Patterson
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, USA
| | - María Luisa Jimeno
- Servicio de Resonancia Magnética Nuclear, Centro de Química Orgánica 'Lora-Tamayo', CSIC, Madrid, Spain
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, USA
| | - Felipe Reviriego
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Madrid, Spain
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4
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Yang L, Wang L, Lv X, Chen JH, Wang Y, Yang G. Complexation of triangular silver(I) or copper(I) nitropyrazolates with dibenzothiophenes having potential use in adsorptive desulfurization. Dalton Trans 2021; 50:2915-2927. [PMID: 33555282 DOI: 10.1039/d0dt04037a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triangular silver(i) and copper(i) 3,5-diethyl-4-nitropyrazolates (abbreviated as [Ag(denpz)]3 or Ag3pz3, and [Cu(denpz)]3 or Cu3pz3), as well as their adducts with dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (DMDBT) and benzothiophene (BT), have been prepared and characterized by a series of techniques. X-ray analyses show that these adducts are stabilized by MS, MC contacts and ππ stacking interactions. NMR measurements and theoretical calculations indicate that the intensity of interaction between the metal complexes and dibenzothiophenes follows the trend: Ag3pz3-DMDBT > Ag3pz3-DBT > Cu3pz3-DMDBT > Cu3pz3-DBT, which can be understood on the basis of a weak interaction between π-acid (Ag3pz3 or Cu3pz3) and π-base (DBT/DMDBT). Both complexes show good adsorptive ability and reusability toward the removal of DBT and DMDBT from model oil (n-octane), with the maximum adsorption capacity at room temperature being 39 mg S (DMDBT) per g Cu3pz3, 34 mg S (DMDBT) per g Ag3pz3, 40 mg S (DBT) per g Cu3pz3, 36 mg S (DBT) per g Ag3pz3, respectively. Compared to Ag3pz3, Cu3pz3 exhibits higher adsorptive capacities for DBT/DMDBT, which has been attributed to its lower molecular mass.
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Affiliation(s)
- Lin Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Lihong Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Xingpu Lv
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Jing-Huo Chen
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Guang Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
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A Computational Study of Metallacycles Formed by Pyrazolate Ligands and the Coinage Metals M = Cu(I), Ag(I) and Au(I): (pzM) n for n = 2, 3, 4, 5 and 6. Comparison with Structures Reported in the Cambridge Crystallographic Data Center (CCDC). Molecules 2020; 25:molecules25215108. [PMID: 33153197 PMCID: PMC7663606 DOI: 10.3390/molecules25215108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022] Open
Abstract
The structures reported in the Cambridge Structural Database (CSD) for neutral metallacycles formed by coinage metals in their valence (I) (cations) and pyrazolate anions were examined. Depending on the metal, dimers and trimers are the most common but some larger rings have also been reported, although some of the larger structures are not devoid of ambiguity. M06-2x calculations were carried out on simplified structures (without C-substituents on the pyrazolate rings) in order to facilitate a comparison with the reported X-ray structures (geometries and energies). The problems of stability of the different ring sizes were also analyzed.
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6
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Guo L, Lv XP, Chen JH, Zhang W, Yang G. Synthesis and Crystal Structures of Alkali and Alkaline Earth Metal Complexes of 3,5-Dinitropyrazolyl-4-carboxylate. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lili Guo
- Green Catalysis Center and College of Chemistry; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
| | - Xing-Pu Lv
- Green Catalysis Center and College of Chemistry; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
| | - Jing-Huo Chen
- Green Catalysis Center and College of Chemistry; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
| | - Wenhua Zhang
- Green Catalysis Center and College of Chemistry; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
| | - Guang Yang
- Green Catalysis Center and College of Chemistry; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
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7
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Chen JH, Wei D, Yang G, Ma JG, Cheng P. A systematic investigation of structural transformation in a copper pyrazolato system: a case study. Dalton Trans 2020; 49:1116-1123. [PMID: 31894791 DOI: 10.1039/c9dt04263f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Dissolution-recrystallization structural transformation (DRST) is a powerful tool to unravel unequivocally the mechanism of dynamic conversion processes, based on the structures of the initial reactants, final products and sometimes intermediates isolated from the reaction mixture. Herein, we illustrate the details of the conversion processes of (CuIpz)3 into [CuII(OH)pz]6 (pzH = 4-chloro-3,5-diphenylpyrazole) through DRSTs. Based on crystal structure determination and spectroscopic methods, the most encountered species, (CuIpz)3, is in equilibrium with (CuIpz)4 in solution with the tetramer becoming dominant at low temperature, indicating an entropy-controlled conversion between these two structural isomers. The CuI trimer/tetramer in solution further experiences an oxidation if exposed to the open air, resulting in the formation of a pentanuclear mixed-valence intermediate CuI3CuII2(OMe)2pz5 which can be isolated as single crystals at -20 °C and has been structurally characterized for the first time. The final product isolated from the solution is the fully oxidized hexanuclear [CuII(OMe)pz]6, which is easily transformed into [CuII(OH)pz]6 in the presence of humidity.
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Affiliation(s)
- Jing-Huo Chen
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, P. R. China.
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8
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Dias HVR, Palehepitiya Gamage CS, Jayaratna NB, Hettiarachchi CV. Mixed ligand complexes of silver( i) supported by highly fluorinated pyrazolates, and chelating and bridging N-heterocycles. NEW J CHEM 2020. [DOI: 10.1039/d0nj04007j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A range of silver complexes featuring all nitrogen coordination environments involving pyrazolates and chelating and non-chelating bidentate N-heterocycles are reported.
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Affiliation(s)
- H. V. Rasika Dias
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
| | | | - Naleen B. Jayaratna
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
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9
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Lakhi JS, Patterson MR, Dias HVR. Coinage metal metallacycles involving a fluorinated 3,5-diarylpyrazolate. NEW J CHEM 2020. [DOI: 10.1039/d0nj03744c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoluminescent, trinuclear, coinage metal pyrazolates have been isolated using a fluorinated diaryl-pyrazolate.
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Affiliation(s)
- Jaspreet S. Lakhi
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
| | - Monika R. Patterson
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
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10
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Emashova SK, Titov AA, Filippov OA, Smol'yakov AF, Titova EM, Epstein LM, Shubina ES. Luminescent Ag
I
Complexes with 2,2′‐Bipyridine Derivatives Featuring [Ag‐(CF
3
)
2
Pyrazolate]
4
Units. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sofia K. Emashova
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
- Faculty of Chemistry Lomonosov Moscow State University 1‐3 Leninskie Gory 119991 Moscow Russia
| | - Aleksei A. Titov
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
| | - Oleg A. Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
| | - Alexander F. Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
- Inorganic Chemistry Department Peoples' Friendship University of Russia Miklukho‐Maklaya str. 6 117198 Moscow Russia
- Plekhanov Russian University of Economics Stremyanny per. 36 117997 Moscow Russia
| | - Ekaterina M. Titova
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
- Inorganic Chemistry Department Peoples' Friendship University of Russia Miklukho‐Maklaya str. 6 117198 Moscow Russia
| | - Lina M. Epstein
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
| | - Elena S. Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov st. 28 119991 Moscow Russia
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11
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Notash B, Rezaei Kheirkhah B. The effect of solvent on one-dimensional cadmium coordination polymers. NEW J CHEM 2018. [DOI: 10.1039/c8nj02110d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We transformed one one-dimensional coordination polymer directly to another by carrying out a dissolution–recrystallization structural transformation (DRST).
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Affiliation(s)
- Behrouz Notash
- Department of Inorganic Chemistry and Catalysis
- Shahid Beheshti University
- General Campus
- Evin
- Iran
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