1
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Hum G, Phang SJI, Ong HC, León F, Quek S, Khoo YXJ, Li C, Li Y, Clegg JK, Díaz J, Stuparu MC, García F. Main Group Molecular Switches with Swivel Bifurcated to Trifurcated Hydrogen Bond Mode of Action. J Am Chem Soc 2023. [PMID: 37267593 DOI: 10.1021/jacs.2c12713] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Artificial molecular machines have captured the full attention of the scientific community since Jean-Pierre Sauvage, Fraser Stoddart, and Ben Feringa were awarded the 2016 Nobel Prize in Chemistry. The past and current developments in molecular machinery (rotaxanes, rotors, and switches) primarily rely on organic-based compounds as molecular building blocks for their assembly and future development. In contrast, the main group chemical space has not been traditionally part of the molecular machine domain. The oxidation states and valency ranges within the p-block provide a tremendous wealth of structures with various chemical properties. Such chemical diversity─when implemented in molecular machines─could become a transformative force in the field. Within this context, we have rationally designed a series of NH-bridged acyclic dimeric cyclodiphosphazane species, [(μ-NH){PE(μ-NtBu)2PE(NHtBu)}2] (E = O and S), bis-PV2N2, displaying bimodal bifurcated R21(8) and trifurcated R31(8,8) hydrogen bonding motifs. The reported species reversibly switch their topological arrangement in the presence and absence of anions. Our results underscore these species as versatile building blocks for molecular machines and switches, as well as supramolecular chemistry and crystal engineering based on cyclophosphazane frameworks.
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Affiliation(s)
- Gavin Hum
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Si Jia Isabel Phang
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - How Chee Ong
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Felix León
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Shina Quek
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Yi Xin Joycelyn Khoo
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Chenfei Li
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Yongxin Li
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Cooper Road, St Lucia 4072, Queensland, Australia
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica, Facultad de Veterinaria Extremadura, Avda de la Universidad s/n, Cáceres 10003, Spain
| | - Mihaiela C Stuparu
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore
| | - Felipe García
- Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, Julián Claveria 8, Oviedo 33006, Asturias, Spain
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia
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2
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Subtraction by addition: chalcogen-oxidation induced N–C bond scissions in bis(amido)cyclodiphosphazane chelates of the Group 15 elements. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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3
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Pre-arranged building block approach for the orthogonal synthesis of an unfolded tetrameric organic-inorganic phosphazane macrocycle. Commun Chem 2022; 5:59. [PMID: 36697579 PMCID: PMC9814789 DOI: 10.1038/s42004-022-00673-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 04/08/2022] [Indexed: 01/28/2023] Open
Abstract
Inorganic macrocycles remain challenging synthetic targets due to the limited number of strategies reported for their syntheses. Among these species, large fully inorganic cyclodiphosphazane macrocycles have been experimentally and theoretically highlighted as promising candidates for supramolecular chemistry. In contrast, their hybrid organic-inorganic counterparts are lagging behind due to the lack of synthetic routes capable of controlling the size and topological arrangement (i.e., folded vs unfolded) of the target macrocycle, rendering the synthesis of differently sized macrocycles a tedious screening process. Herein, we report-as a proof-of-concept-the combination of pre-arranged building blocks and a two-step synthetic route to rationally enable access a large unfolded tetrameric macrocycle, which is not accessible via conventional synthetic strategies. The obtained macrocycle hybrid cyclodiphosphazane macrocycle, cis-[μ-P(μ-NtBu)]2(μ-p-OC6H4C(O)O)]4[μ-P(μ-NtBu)]2 (4), displays an unfolded open-face cavity area of 110.1 Å2. Preliminary theoretical host-guest studies with the dication [MeNC5H4]22+ suggest compound 4 as a viable candidate for the synthesis of hybrid proto-rotaxanes species based on phosphazane building blocks.
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4
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Shahid M, Abbasi M, Yaqoob M, Haque RA, Iqbal MA. Techniques in the synthesis of organometallic compounds of Hafnium. REV INORG CHEM 2021. [DOI: 10.1515/revic-2020-0027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
Hafnium is a transition metal and it is the 45th most abundant transition element present on the earth. Hafnium has been successfully alloyed with several metals including titanium, iron, and niobium. Hafnium complexes are less active olefin polymerization catalysts. In the current review synthesis of hafnium complexes involving bonding through different linkages like “carbon, nitrogen, oxygen, carbon and oxygen, nitrogen and cobalt nitrogen and oxygen, nitrogen and phosphorus, nitrogen and sulfur, phosphorus and carbon, phosphorus and oxygen, sulfur carbon and oxygen, carbon–nitrogen and oxygen, carbon–nitrogen and phosphorus, carbon–nitrogen oxygen, sulfur and phosphorus, carbon–oxygen phosphorus and nitrogen”. The commonly used solvents for the synthesis of Hafnium complexes are tetrahydrofuran, n-hexane, and toluene, etc. These complexes were mostly reported at different temperatures ranges from −35 to 110 °C with continuous stirring, according to the nature of ligands. An overview of techniques in the synthesis of Hafnium complexes through various routes has been compiled.
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Affiliation(s)
- Meeshar Shahid
- Department of Chemistry , University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
| | - Mahvish Abbasi
- Department of Chemistry , University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
- Organometallic & Coordination Chemistry Laboratory, University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
| | - Munazzah Yaqoob
- Department of Chemistry , University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
- Organometallic & Coordination Chemistry Laboratory, University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
| | - Rosenani A. Haque
- School of Chemical Sciences, Universiti Sains Malaysia , 11800 USM , Penang , Malaysia
| | - Muhammad Adnan Iqbal
- Department of Chemistry , University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
- Organometallic & Coordination Chemistry Laboratory, University of Agriculture Faisalabad , 38040 Faisalabad , Pakistan
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5
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Shi X, León F, Sim Y, Quek S, Hum G, Khoo YXJ, Ng ZX, Par MY, Ong HC, Singh VK, Ganguly R, Clegg JK, Díaz J, García F. N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaoyan Shi
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 Guangdong P. R. China
| | - Felix León
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Ying Sim
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Shina Quek
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Gavin Hum
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Yi Xin Joycelyn Khoo
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Zi Xuan Ng
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Mian Yang Par
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - How Chee Ong
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Varun K. Singh
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
- Department of Chemistry Shiv Nadar University NH91, Tehsil Dadri Gautam Buddha Nagard 201314 Uttar Pradesh India
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St Lucia 4072 Queensland Australia
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica Facultad de Veterinaria Universidad de Extremadura Avda de la Universidad s/n 10003 Cáceres Spain
| | - Felipe García
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
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6
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Shi X, León F, Sim Y, Quek S, Hum G, Khoo YXJ, Ng ZX, Par MY, Ong HC, Singh VK, Ganguly R, Clegg JK, Díaz J, García F. N-Bridged Acyclic Trimeric Poly-Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks. Angew Chem Int Ed Engl 2020; 59:22100-22108. [PMID: 32696527 DOI: 10.1002/anie.202008214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/16/2020] [Indexed: 01/15/2023]
Abstract
We have synthesized a completely new family of acyclic trimeric cyclodiphosphazane compounds comprising NH, Ni Pr, Nt Bu and NPh bridging groups. In addition, the first NH-bridged acyclic dimeric cyclophosphazane has been produced. The trimeric species display highly tuneable characteristics so that the distance between the terminal N(H)R moieties can be readily modulated by the steric bulk present in the bridging groups (ranging from ≈6 to ≈10 Å). Moreover, these species exhibit pronounced topological changes when a weak non-bonding NH⋅⋅⋅π aryl interaction is introduced. Finally, the NH-bridged chloride binding affinities have been calculated and benchmarked along with the existing experimental data available for monomeric cyclodiphosphazanes. Our results underscore these species as promising hydrogen bond donors for supramolecular host-guest applications.
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Affiliation(s)
- Xiaoyan Shi
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore.,School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, Guangdong, P. R. China
| | - Felix León
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Ying Sim
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Shina Quek
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Gavin Hum
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Yi Xin Joycelyn Khoo
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Zi Xuan Ng
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Mian Yang Par
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - How Chee Ong
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Varun K Singh
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore.,Department of Chemistry, Shiv Nadar University, NH91, Tehsil Dadri, Gautam Buddha Nagard, 201314, Uttar Pradesh, India
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Cooper Road, St Lucia, 4072, Queensland, Australia
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica, Facultad de Veterinaria Universidad de Extremadura, Avda de la Universidad s/n, 10003, Cáceres, Spain
| | - Felipe García
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
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7
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Musongong JT, Otang ME, Mash BL, Zeller M, Stahl L. Covalent and ionic bonding in bi- and tricyclic Group 15 amides: equidistant P-I and As-I bonds and fluxional cations. Dalton Trans 2020; 49:6341-6354. [PMID: 32347265 DOI: 10.1039/d0dt01163k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of trivalent Group 15 bis(tert-butylamido)cyclodiphosph(iii)azane element bi- and tricycles of the formulae {[(tBuNP)2(tBuN)2]ElX}, El = P, As, Sb, Bi, where X = Ph, OPh, OtBu, N3, hexamethyldisilylamide (HMDS), OTf, was synthesized from the corresponding chlorides via salt elimination. The ensuing compounds were studied spectroscopically and X-ray crystallographically with a particular focus on the length of the El-X bond. While the Group 15 element to phenyl and HMDS were of normal lengths and completely covalent, those to azide appeared to be partly ionic. The {[(tBuNP)2(tBuN)2]ElI} showed El-I bonds that were substantially longer than the typical element iodide bonds, suggesting a very high degree of polarity and bordering on ionic bonding. Finally, the triflate [(tBuNP)2(tBuN)2]P] + [SO3CF3]- proved to be an ion pair in the solid state. The antimony analog, however, showed a long covalent Sb-O bond in the solid state, although it appears to dissociate into ions in solution. The phosphonium triflate salt is fluxional and exhibits a previously unseen highly symmetrical structure in solution. The bonding trends from completely covalent to completely ionic are discussed in terms steric restrictions and the delocalization of charge in either the cation or the anion.
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Affiliation(s)
- Joseph T Musongong
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
| | - Mathew E Otang
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
| | - Brandon L Mash
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907 USA
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907 USA
| | - Lothar Stahl
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
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8
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Alaghaz AMA, Aldulmani SAA. Novel 13,14‐dimethyl‐5,8‐dioxa‐2,11,13,14‐tetraaza‐1,12‐diphosphabicyclo [10.1.1] tetradecane 1,12‐dioxide ligand and its Ni(II), Co(II), and Cu(II) complexes: Synthesis, characterization, antimicrobial, DNA cleavage, and computational studies. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Abdel‐Nasser M. A. Alaghaz
- Department of Chemistry, Faculty of ScienceJazan University Jazan Saudi Arabia
- Department of Chemistry, Faculty of Science (Boys)Al‐Azhar University Cairo Egypt
| | - Sharah A. A. Aldulmani
- Department of Chemistry, Faculty of Science for GirlsKing Khalid University Abha Saudi Arabia
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9
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Taherzadeh M, Pourayoubi M, Nečas M. The first X-ray crystal structure of a mercury(II) complex with an SP(N)3-based ligand: Synthesis and crystal structure of SP(NC5H10)3 and [Hg{SP(NC5H10)3}Cl2]2. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1487427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Maryam Taherzadeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehrdad Pourayoubi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Marek Nečas
- Department of Chemistry, Masaryk University, Brno, Czech Republic
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
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10
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Alaghaz ANMA, Alturiqi AS, Ammar RA, Zayed ME. Synthesis, spectral characterization, anticancer and antibacterial studies of cyclodiphosph(V)azane derivatives and their copper(II) complexes. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1487430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Abdel-Nasser M. A. Alaghaz
- Department of Chemistry, Faculty of Science (Boys), Alazhar University, Cairo, Egypt
- Department of Chemistry, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Amani S. Alturiqi
- Department of Chemistry, College of Science, Princess Nourah bint Abdul Rahman University, Saudi Arabia
| | - Reda A. Ammar
- Department of Chemistry, College of Science, Al-Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
| | - Mohamed E. Zayed
- Department of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
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11
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Shi YX, Martin KA, Liang RZ, Star DG, Li Y, Ganguly R, Sim Y, Tan D, Díaz J, García F. Synthesis of Unique Phosphazane Macrocycles via Steric Activation of C-N Bonds. Inorg Chem 2018; 57:10993-11004. [PMID: 30125095 DOI: 10.1021/acs.inorgchem.8b01596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Herein we describe that oxidation reactions of the dimeric cyclophosphazanes, [{P(μ-NR)}2(μ-NR)]2, R = tBu (1), to produce a series of diagonally dioxidized products P4(μ-N tBu)6E2 [E = O (2), S (3), and Se (4)] and tetraoxidized frameworks. The latter display an unexpected C-N bond activation and cleavage to produce a series of novel phosphazane macrocyclic arrangements containing newly formed N-H bonds. Macromolecules P4(μ-N tBu)4(μ-NH)2O4 (5) and P4(μ-N tBu)3(μ-NH)3E4, E = S (6) and Se (7), dicleaved and tricleaved products, respectively, are rare examples of dimeric macrocycles containing NH bridging groups. Our theoretical and experimental studies illustrate that the extent to which these C-N bonds are cleaved can be controlled by modification of steric parameters in their synthesis, by adjusting either the steric bulk of the substituents in the parent framework or the size of the chalcogen element introduced during the oxidation process. Our findings represent new synthetic pathways for the synthesis of otherwise-elusive macrocycle arrangements within the phosphazane family.
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Affiliation(s)
- Yan X Shi
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Katherine A Martin
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Rong Z Liang
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Daniel G Star
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Yongxin Li
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Ying Sim
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Davin Tan
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica, Facultad de Veterinaria , Universidad de Extremadura , Av. de la Universidad s/n , 10003 Caceres , Spain
| | - Felipe García
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link , 637371 Singapore
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12
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Tan D, Ng ZX, Sim Y, Ganguly R, García F. cis-Cyclodiphosph(v/v)azanes as highly stable and robust main group supramolecular building blocks. CrystEngComm 2018. [DOI: 10.1039/c8ce00395e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bench-top stable cis-cyclodiphosph(v/v)azanes are demonstrated to form robust R21(8) bifurcated hydrogen-bonds and PSe⋯Br halogen bonds. This work highlights the potential of cyclodiphosph(v/v)azane building blocks in creating new supramolecular assemblies.
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Affiliation(s)
- Davin Tan
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
| | - Zi Xuan Ng
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
| | - Ying Sim
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
| | - Felipe García
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
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13
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Sim Y, Tan D, Ganguly R, Li Y, García F. Orthogonality in main group compounds: a direct one-step synthesis of air- and moisture-stable cyclophosphazanes by mechanochemistry. Chem Commun (Camb) 2018. [DOI: 10.1039/c8cc01043a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Mechanochemistry has been established to be an environmentally-friendly way of conducting reactions in a solvent-free manner.
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Affiliation(s)
- Ying Sim
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Davin Tan
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Yongxin Li
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Felipe García
- School of Physical and Mathematical Sciences
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
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14
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Otang ME, Josephson D, Duppong T, Stahl L. The chameleonic reactivity of dilithio bis(alkylamido)cyclodiphosph(iii)azanes with chlorophosphines. Dalton Trans 2018; 47:11625-11635. [DOI: 10.1039/c8dt02087f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Analogous reactions do not necessarily give analogous products.
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Affiliation(s)
- Mathew E. Otang
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - David Josephson
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - Todd Duppong
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - Lothar Stahl
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
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