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Dankert F, Gupta P, Wellnitz T, Baumann W, Hering-Junghans C. Deoxygenation of chalcogen oxides EO 2 (E = S, Se) with phospha-Wittig reagents. Dalton Trans 2022; 51:18642-18651. [PMID: 36448405 DOI: 10.1039/d2dt03703c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In here we present the deoxygenation of the chalcogen oxides EO2 (E = S, Se) with R-P(PMe3), so-called phospha-Wittig reagents. The reaction of DABSO (DABCO·2SO2) with R-P(PMe3) (R = Mes*, 2,4,6-tBu3-C6H2; MesTer, 2,6-(2,4,6-Me3-C6H2)2-C6H3) resulted in the formation of thiadiphosphiranes (RP)2S (1:R), while selenadiphosphiranes (RP)2Se (2:R) were afforded with SeO2, both accompanied by the formation of OPMe3. Utilizing the sterically more encumbered DipTer-P(PMe3) (DipTer = 2,6-(2,6-iPr2-C6H3)2-C6H3) a different selectivity was observed and (DipTerP)2Se (2:DipTer) along with [Se(μ-PDipTer)]2 (3:DipTer) were isolated as the Se-containing species in the reaction with SeO2. Interestingly, the reaction with DABSO (or with equimolar ratios of SeO2 at elevated temperatures) gave rise to the formation of the OPMe3-stabilized dioxophosphorane (phosphinidene dioxide) DipTerP(O)2-OPMe3 (4:DipTer) as the main product. This contrasting reactivity can be rationalized by two potential pathways in the reaction with EO2: (i) a Wittig-type pathway and (ii) a pathway involving oxygenation of the phospha-Wittig reagents and release of SO. Thus, phospha-Wittig reagents are shown to be useful synthetic tools for the metal-free deoxygenation of EO2 (E = S, Se).
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Affiliation(s)
- Fabian Dankert
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Priyanka Gupta
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Tim Wellnitz
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Wolfgang Baumann
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
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Chlupatý T, Růžičková Z, Kampová H, Merna J, Růžička A. Lithium, Magnesium, and Zinc Centers N,N'-Chelated by an Amine-Amide Hybrid Ligand. Inorg Chem 2022; 61:9392-9404. [PMID: 35706334 DOI: 10.1021/acs.inorgchem.1c03850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis and structure of lithium, magnesium, and zinc complexes N,N'-chelated by a hybrid amine-amido ligand ([2-(Me2NCH2)C6H4NR]-, abbreviated as LNR, where R = H, SiMe3, or Bn) are reported. The reaction of the least sterically demanding LNH with various magnesium sources gives the hexameric imide [LNMg]6 (4) by the elimination of n-butane from LNHMgnBu (2) or by the reaction of LNHLi (1) with MeMgBr. [LNH]2Mg (3) is obtained through the addition of 0.5 equiv of nBu2Mg or Mg[N(SiMe3)2]2 to LNH2 and with 1 equiv of nBu2Mg reacting to 2. Both LNHMgN(SiMe3)2 (6) and isostructural LNHZnN(SiMe3)2 (16) have been prepared using two different approaches: monodeprotonation of LNH2 by Zn/Mg[N(SiMe3)2]2 in a 1:1 ratio or ligand substitution of 2 or LNHZnEt (12) by 0.5 equiv of Sn[N(SiMe3)2]2. The reactions of 2 or 3 with 1 provide the heterotrimetallic complex [LNH]4Li2Mg (5). Benzyl- or trimethylsilyl-substituted anilines [LN(SiMe3)H (7) and LN(Bn)H (8)] with 0.5 equiv of nBu2Mg allow the formation of homoleptic bis(amides) of the [LN(R)]2Mg type (10 and 11). Nevertheless, only the silylated secondary amine 7 is able to provide the heteroleptic n-butylmagnesium amide LN(SiMe3)MgnBu (9) upon reaction with an equimolar amount of nBu2Mg. Similarly, 12, [LNH]2Zn (13), LN(R)ZnEt (17 and 18), and [LN(R)]2Zn [R = SiMe3 (19) and Bn (20)] were prepared by the monodeprotonation of LNH2 or LN(R)H using Et2Zn in the corresponding stoichiometric ratio. LNHZnI was prepared by the nucleophilic substitution of an ethyl chain in 12 by molecular iodine. A heterometallic complex, [LNH]4Li2Zn (14), analogous to 5 was prepared from 12 or 13 with 1 or 2 equiv of 1, respectively.
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Affiliation(s)
- Tomáš Chlupatý
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic
| | - Zdeňka Růžičková
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic
| | - Hana Kampová
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic
| | - Jan Merna
- Faculty of Chemical Technology, Department of Polymers, University of Chemistry and Technology, Technická 5, CZ-166 28 Prague 6, Czech Republic
| | - Aleš Růžička
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic
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Wolf BM, Anwander R. Chasing Multiple Bonding Interactions between Alkaline‐Earth Metals and Main‐Group Fragments. Chemistry 2019; 25:8190-8202. [DOI: 10.1002/chem.201901169] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Benjamin M. Wolf
- Institut für Anorganische ChemieUniversität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institut für Anorganische ChemieUniversität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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Klementyeva SV, Arleth N, Meyer K, Konchenko SN, Roesky PW. Dithionite and sulfinate complexes from the reaction of SO2 with decamethylsamarocene. NEW J CHEM 2015. [DOI: 10.1039/c5nj00318k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The reaction of [(η5-C5Me5)2Sm(THF)2] with SO2 resulted in dithionite, sulfinate and mixed dithionite–sulfinate complexes.
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Affiliation(s)
- Svetlana V. Klementyeva
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
- G.A. Razuvaev Institute of Organometallic Chemistry
| | - Nicholas Arleth
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
| | - Karsten Meyer
- Universität Erlangen-Nürnberg
- Department Chemie und Pharmazie
- 91058 Erlangen
- Germany
| | - Sergey N. Konchenko
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
- Nikolaev Institute of Inorganic Chemistry SB RAS
| | - Peter W. Roesky
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
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Gehrmann T, Kruck M, Wadepohl H, Gade LH. Stitching together SNx units in the coordination sphere of zirconium: assembly of a tris(imido)sulfite and a hydrazidobis(imido)sulfite. Chem Commun (Camb) 2012; 48:2397-9. [DOI: 10.1039/c2cc17594k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mezei G, Zaleski CM, Pecoraro VL. Structural and Functional Evolution of Metallacrowns. Chem Rev 2007; 107:4933-5003. [PMID: 17999555 DOI: 10.1021/cr078200h] [Citation(s) in RCA: 433] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gellert Mezei
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48108-1005, and Department of Chemistry, Franklin Science Center, Shippensburg University, Shippensburg, Pennsylvania 17257-2200
| | - Curtis M. Zaleski
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48108-1005, and Department of Chemistry, Franklin Science Center, Shippensburg University, Shippensburg, Pennsylvania 17257-2200
| | - Vincent L. Pecoraro
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48108-1005, and Department of Chemistry, Franklin Science Center, Shippensburg University, Shippensburg, Pennsylvania 17257-2200
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Dong G, Bing-guang Z, Chun-ying D, Ke-liang P, Qing-jin M. Novel three-dimensional framework based on Ba9cores involving unprecedented μ5-η3:η3-acetate anions. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b207889a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chivers T. 2001 E.W.R. Steacie Award LectureThe imido ligand in main group element chemistry. CAN J CHEM 2001. [DOI: 10.1139/v01-170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The imido group (NR) is a versatile ligand in main group chemistry. The high reactivity of multiply bonded (terminal) imido derivatives of p-block elements is used, for example, in the aza-Wittig reaction, allylic aminations, and in peptide synthesis. As a bridging ligand, the imido group provides a cornerstone for a wide variety of binary cluster structures. This review is primarily concerned with the synthesis, structures, reactions, and ligand behaviour of imido derivatives of the heavy chalcogens (selenium and tellurium) as exemplified by the tellurium diimide dimer t-BuNTe(µ-N-t-Bu)2TeN-t-Bu and the homoleptic trisimido-tellurite dianion [Te(N-t-Bu)3]2. The synthesis and cluster structures of alkali metal and alkaline earth metal derivatives of heteroleptic imido-oxo anions of sulfur, e.g., [OxS(NR)3 x]2 (x = 1, 2) and [O2S(µ-NPh)SO2]2, are also discussed.Key words: main group chemistry, imido ligand, chalcogens.
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Chivers T, Krahn M, Parvez M, Schatte G. Preparation and x-ray structures of alkali-metal derivatives of the ambidentate anions [tBuN(E)P(mu-NtBu)2P(E)NtBu]2- (E = S, Se) and [tBuN(Se)P(mu-NtBu)2PN(H)tBu)]-. Inorg Chem 2001; 40:2547-53. [PMID: 11350233 DOI: 10.1021/ic001093o] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ambidentate dianions [(t)BuN(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu](2)(-) (5a, E = S; 5b, E = Se) are obtained as their disodium and dipotassium salts by the reaction of cis-[(t)Bu(H)N(E)P(mu-N(t)Bu)(2)P(E)N(H)(t)Bu] (6a, E = S; 6b, E = Se), with 2 equiv of MN(SiMe(3))(2) (M = Na, K) in THF at 23 degrees C. The corresponding dilithium derivative is prepared by reacting 6a with 2 equiv of (t)BuLi in THF at reflux. The X-ray structures of five complexes of the type [(THF)(x)()M](2)[(t)BuN(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu] (9, M = Li, E = S, x = 2; 11a/11b, M = Na, E = S/Se, x = 2; 12a, M = K, E = S, x = 1; 12b, M = K, E = Se, x = 1.5) have been determined. In the dilithiated derivative 9 the dianion 5a adopts a bis (N,S)-chelated bonding mode involving four-membered LiNPS rings whereas 11a,b and 12a,b display a preference for the formation of six-membered MNPNPN and MEPNPE rings, i.e., (N,N' and E,E')-chelation. The bis-solvated disodium complexes 11a,b and the dilithium complex 9 are monomeric, but the dipotassium complexes 12a,b form dimers with a central K(2)E(2) ring and associate further through weak K.E contacts to give an infinite polymeric network of 20-membered K(6)E(6)P(4)N(4) rings. The monoanions [(t)Bu(H)N(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu)](-) (E = S, Se) were obtained as their lithium derivatives 8a and 8b by the reaction of 1 equiv of (n)BuLi with 6a and 6b, respectively. An X-ray structure of the TMEDA-solvated complex 8a and the (31)P NMR spectrum of 8b indicate a N,E coordination mode. The reaction of 6b with excess (t)BuLi in THF at reflux results in partial deselenation to give the monolithiated P(III)/P(V) complex [(THF)(2)Li[(t)BuN(Se)P(mu-N(t)Bu)(2)PN(H)(t)Bu]] 10, which adopts a (N,Se) bonding mode.
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Affiliation(s)
- T Chivers
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4.
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Abstract
The compounds [[(thf)Li2-[H2CS(NtBu)2]]2] (1) and [((thf)Li2[(Et)-(Me)CS(NtBu)2])2] (2) can be synthesized in a two-step reaction. Firstly addition of an alkyllithium to sulfur diimide gives the diazaalkylsulfinate [RS(NtBu)2] (R =Me, sBu). In a second step the alpha-carbon atom in R is metalated with one equivalent of methyllithium to give the S-ylides. This new class of compounds can be rationalized as sulfite analogues, in which two oxygen atoms are each isoelectronically replaced by a NtBu group and the remaining oxygen atom is replaced by a CR2 group. Similar to Corey's S-ylides (R2(O)S+-CR2) and Wittig's phosphonium ylides (R3P+ - -CR2), these molecules contain a positively charged sulfur atom next to a carbanionic center. Therefore nucleophilic addition reactions of the carbon atom are feasible. The reaction of a sulfur diimide with the anionic carbon center in [H2CS-(NtBu)2]2- gives the intermediate alkylbis(diazasulfinate) [(tBuN)2SCH2S(NtBu)2]2-. The acidity of the hydrogen atoms at the bridging CH2 group is high enough to give, upon deprotonation, the [(tBuN)2SCHS(NtBu)2]3- trianion in [[(thf)Li3[(tBuN)2SCHS(NtBu)2]]2] (3). In [(Et)(Me)CS(NtBu)2]2 the nucleophilic carbon atom is sterically hindered and transimidation instead of deprotonation is observed. In a complex redox process [(thf)6Li6S((NtBu)3S]2] is recovered. The two new classes of compounds broaden the rich coordination chemistry of the triazasulfites by the introduction of a hard carbon center.
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Affiliation(s)
- B Walfort
- Institut für Anorganische Chemie der Universität Würzburg, Germany
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Brask JK, Chivers T, Schatte G, Yap GPA. Entrapment of tert-Butyllithium and Lithium tert-Butylamide Monomers by Partially Lithiated Derivatives of Aluminum and Gallium Primary Amide Complexes. Organometallics 2000. [DOI: 10.1021/om000603j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Justin K. Brask
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Gabriele Schatte
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Glenn P. A. Yap
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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