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Tiefenthaler SM, Korber N. [K([2.2.2]‐crypt)]K[Pt
3
(μ
2
‐CO)
3
(PPh
3
)
3
] ⋅ 3NH
3
– A New
Chini
‐Type Platinum Carbonyl Complex. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Nikolaus Korber
- University of Regensburg Department of Inorganic Chemistry 93040 Regensburg
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2
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Bortoluzzi M, Cesari C, Ciabatti I, Femoni C, Iapalucci MC, Zacchini S. Reactions of Platinum Carbonyl Chini Clusters with Ag(NHC)Cl Complexes: Formation of Acid-Base Lewis Adducts and Heteroleptic Clusters. Inorg Chem 2017; 56:6532-6544. [PMID: 28489358 DOI: 10.1021/acs.inorgchem.7b00665] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of anionic platinum carbonyl Chini clusters [Pt3n(CO)6n]2- [n = 2 (1), 3 (2), 4 (3)] with Ag(IPr)Cl [IPr = C3N2H2(C6H3iPr2)2] afford the neutral acid-base Lewis adducts [Pt9(CO)18(AgIPr)2] (4) and [Pt6(CO)12(AgIPr)2] (5). These are thermally transformed into the homometallic heteroleptic neutral cluster [Pt3(CO)4(IPr)2] (6). Alternatively, 6 can be obtained from the reactions of 1-3 with an excess of the free IPr carbene ligand. The formation of 6 is sometimes accompanied by trace amounts of [Pt4(CO)4(IPr)3] (7). The reaction of 6 with free IPr affords the closely related [Pt3(CO)3(IPr)3] (8) heteroleptic cluster by substitution of the unique terminal CO ligand with a third IPr ligand. The reactions of 1-3 with Ag(IMes)Cl [IMes = C3N2H2(C6H2Me3)2] proceed differently from those involving Ag(IPr)Cl. Indeed, the only product isolated after workup is the bimetallic tetranuclear cluster [Pt3(CO)3(IMes)3(AgCl)] (9). 9 slowly reacts under a CO atmosphere, resulting in the pentanuclear [Pt5(CO)7(IMes)3] (10) complex. All of the new clusters 4-10 have been spectroscopically characterized and their molecular structures determined by X-ray crystallography. 4 and 5 retain the original trigonal-prismatic structures of the parent anionic Chini clusters, which are capped by two [Ag(IPr)]+ moieties. Conversely, 6-9 are based on a Pt3 triangular core decorated by CO and N-heterocyclic carbene ligands as well as Pt(CO) (in the case of 7) and AgCl (9) moieties. 10 displays an edge-bridged tetrahedral geometry.
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Affiliation(s)
- Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Ca' Foscari University of Venice , Via Torino 155, 30175 Mestre, Venice, Italy
| | - Cristiana Cesari
- Dipartimento di Chimica Industriale "Toso Montanari″, University of Bologna , Viale Risorgimento 4, I-40136 Bologna Italy
| | - Iacopo Ciabatti
- Dipartimento di Chimica Industriale "Toso Montanari″, University of Bologna , Viale Risorgimento 4, I-40136 Bologna Italy
| | - Cristina Femoni
- Dipartimento di Chimica Industriale "Toso Montanari″, University of Bologna , Viale Risorgimento 4, I-40136 Bologna Italy
| | - Maria Carmela Iapalucci
- Dipartimento di Chimica Industriale "Toso Montanari″, University of Bologna , Viale Risorgimento 4, I-40136 Bologna Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale "Toso Montanari″, University of Bologna , Viale Risorgimento 4, I-40136 Bologna Italy
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3
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Mednikov EG, Ivanov SA, Dahl LF. Stabilization of thallium(I) Pd 9 TlPd 3 sandwich monocation with octahedral-based [Pd 9 (CO) 9 (PMe 3 ) 6 ] and [Pd 3 (CO) 3 (PMe 3 ) 3 ] entities versus unstable Pd 3 Tl(I)Pd 3 sandwich monocation with [Pd 3 (CO) 3 (PEt 3 ) 3 ] entities: Comparative computational implications. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.06.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Forniés J, Giménez N, Ibáñez S, Lalinde E, Martín A, Moreno MT. An Extended Chain and Trinuclear Complexes Based on Pt(II)-M (M = Tl(I), Pb(II)) Bonds: Contrasting Photophysical Behavior. Inorg Chem 2015; 54:4351-63. [PMID: 25884848 DOI: 10.1021/acs.inorgchem.5b00083] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The syntheses and structural characterizations of a Pt-Tl chain [{Pt(bzq)(C6F5)2}Tl(Me2CO)]n 1 and two trinuclear Pt2M clusters (NBu4)[{Pt(bzq)(C6F5)2}2Tl] 2 and [{Pt(bzq)(C6F5)2}2Pb] 3 (bzq = 7,8-benzoquinolinyl), stabilized by donor-acceptor Pt → M bonds, are reported. The one-dimensional heterometallic chain 1 is formed by alternate "Pt(bzq)(C6F5)2" and "Tl(Me2CO)" fragments, with Pt-Tl bond separations in the range of 2.961(1)-3.067(1) Å. The isoelectronic trinuclear complexes 2 (which crystallizes in three forms, namely, 2a, 2b, and 2c) and 3 present a sandwich structure in which the Tl(I) or Pb(II) is located between two "Pt(bzq)(C6F5)2" subunits. NMR studies suggest equilibria in solution implying cleavage and reformation of Pt-M bonds. The lowest-lying absorption band in the UV-vis spectra in CH2Cl2 and tetrahydrofuran (THF) of 1, associated with (1)MLCT/(1)L'LCT (1)[5dπ(Pt) → π*(bzq)]/(1)[(C6F5) → bzq], displays a blue shift in relation to the precursor, suggesting the cleavage of the chain maintaining bimetallic Pt-Tl fragments in solution, also supported by NMR spectroscopy. In 2 and 3, it shows a blue shift in THF and a red shift in CH2Cl2, supporting a more extensive cleavage of the Pt-M bonds in THF solutions than in CH2Cl2, where the trinuclear entities are predominant. The Pt-Tl chain 1 displays in solid state a bright orange-red emission ascribed to (3)MM'CT (M' = Tl). It exhibits remarkable and fast reversible vapochromic and vapoluminescent response to donor vapors (THF and Et2O), related to the coordination/decoordination of the guest molecule to the Tl(I) ion, and mechanochromic behavior, associated with the shortening of the intermetallic Pt-Tl separations in the chain induced by grinding. In frozen solutions (THF, acetone, and CH2Cl2) 1 shows interesting luminescence thermochromism with emissions strongly dependent on the solvent, concentration, and excitation wavelengths. The Pt2Tl complex 2 shows an emission close to 1, ascribed to charge transfer from the platinum fragment to the thallium [(3)(L+L')MM'CT]. 2 also shows vapoluminescent behavior in the presence of vapors of Me2CO, THF, and Et2O, although smaller and slower than those of 1. The trinuclear neutral complex Pt2Pb 3 displays a blue-shift emission band, tentatively assigned to admixture of (3)MM'CT (3)[Pt(d) → Pb(sp)] with some metal-mediated intraligand ((3)ππ/(3)ILCT) contribution. In contrast to 1 and 2, 3 does not show vapoluminescent behavior.
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Affiliation(s)
- Juan Forniés
- †Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza - C.S.I.C. 50009 Zaragoza, Spain
| | - Nora Giménez
- ‡Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - Susana Ibáñez
- †Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza - C.S.I.C. 50009 Zaragoza, Spain
| | - Elena Lalinde
- ‡Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - Antonio Martín
- †Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza - C.S.I.C. 50009 Zaragoza, Spain
| | - M Teresa Moreno
- ‡Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
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5
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Funaioli T, Leoni P, Marchetti L, Albinati A, Rizzato S, Fabrizi de Biani F, Ienco A, Manca G, Mealli C. Unprecedented tris-phosphido-bridged triangular clusters with 42 valence electrons. Chemical, electrochemical and computational studies of their formation and stability. Inorg Chem 2013; 52:4635-47. [PMID: 23537366 DOI: 10.1021/ic400251y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper presents the synthesis and structural characterization of the unprecedented tris-phosphido-bridged compounds Pt3(μ-PBu(t)2)3X3 (X = Cl, Br, I), having only 42 valence electrons, while up to now analogous clusters typically have 44e(-). The new species were obtained by an apparent bielectronic oxidation of the 44e(-) monohalides Pt3(μ-PBu(t)2)3(CO)2X with the corresponding dihalogen X2. Their X-ray structures are close to the D3h symmetry, similarly to the 44e(-) analogues with three terminal carbonyl ligands. The products were also obtained by electrochemical oxidation of the same monohalides in the presence of the corresponding halide. In a detailed study on the formation of Pt3(μ-PBu(t)2)3I3, the redox potentials indicated that I2 can only perform the first monoelectronic oxidation but is unsuited for the second one. Accordingly, the 43e(-) intermediate [Pt3(μ-PBu(t)2)3(CO)2I](+) was ascertained to play a key role. Another piece of information is that, together with the fully oxidized product Pt3(μ-PBu(t)2)3I3, the transient 44e(-) species [Pt3(μ-PBu(t)2)3(CO)3](+) is formed in the early steps of the reaction. In order to extract detailed information on the formation pathway, involving both terminal ligand substitutions and electron transfer processes, a DFT investigation has been performed and all the possible intermediates have been defined together with their associated energy costs. The profile highlights many important aspects, such as the formation of an appropriate couple of 43e(-) intermediates having different sets of terminal coligands, and suitable redox potentials for the transfer of one electron. Optimizations of 45e(-) associative intermediates in the ligand substitution reactions indicate their possible involvement in the redox process with reduction of the overall energy cost. Finally, according to MO arguments, the unique stability of the 42e(-) phosphido-bridged Pt3 clusters can be attributed to the simultaneous presence of three terminal halides.
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Affiliation(s)
- Tiziana Funaioli
- Dipartimento di Chimica e Chimica Industriale dell'Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
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6
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Tsipis AC, Gkekas GN. Shedding light on the bonding, photophysical and magnetotropic properties of triangular Pt3complexes and their “open-face” TlPt3half-sandwiches. Dalton Trans 2013. [DOI: 10.1039/c2dt32507a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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7
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Tsipis AC, Gkekas GN. The molecular, electronic, bonding, and photophysical features of the [(c-Pt3)Tl(c-Pt3)]+ inorganic metallocenes. Dalton Trans 2013; 42:8307-16. [DOI: 10.1039/c3dt50718a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Mednikov EG, Dahl LF. How innocent is thallium(i)? Corrected formulations of [Tl2Pd14(CO)9(PMe3)11][PF6]2 and [TlPd9(CO)9(PPh3)6][PF6] clusters previously reported as corresponding Au2Pd14 and AuPd9 clusters. Chem Commun (Camb) 2013; 49:1085-7. [DOI: 10.1039/c2cc37959g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Mednikov EG, Vo N, Fry CG, Dahl LF. High-Yield Synthesis of PPh3-Ligated Decanuclear Tl–Pd Cluster, Pd9[Tl(acac)](CO)9(PPh3)6: Comparative Analysis of Tl(I)–Pd(0) Bonding Connectivities with Known Tl–Pd Clusters and Resulting Insight Concerning Their Dissimilar Dynamic Solution Behavior. Organometallics 2012. [DOI: 10.1021/om201150x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Evgueni G. Mednikov
- Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706,
United States
| | - Nicky Vo
- Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706,
United States
| | - Charles G. Fry
- Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706,
United States
| | - Lawrence F. Dahl
- Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706,
United States
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10
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Purgel M, Maliarik M, Glaser J, Platas-Iglesias C, Persson I, Tóth I. Binuclear Pt–Tl Bonded Complex with Square Pyramidal Coordination around Pt: A Combined Multinuclear NMR, EXAFS, UV–Vis, and DFT/TDDFT Study in Dimethylsulfoxide Solution. Inorg Chem 2011; 50:6163-73. [DOI: 10.1021/ic200417q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mihály Purgel
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Egyetem tér 1, Debrecen H-4010, Hungary
- Research group of Homogeneous Catalysis, MTA-DE, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Mikhail Maliarik
- Outotec (Sweden) AB, Gymnasievägen 14, P.O. Box 745, SE-031 27 Skellefteå, Sweden
| | - Julius Glaser
- Department of Chemistry, The Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Ingmar Persson
- Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Imre Tóth
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Egyetem tér 1, Debrecen H-4010, Hungary
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11
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Forniés J, Fortuño C, Ibáñez S, Martín A. Halide Addition/Abstraction in Phosphido Derivatives: Isolation of the Thallium and Silver Intermediates. Inorg Chem 2008; 47:5978-87. [DOI: 10.1021/ic800294c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan Forniés
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Consuelo Fortuño
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Susana Ibáñez
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Antonio Martín
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
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12
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Forniés J, García A, Lalinde E, Moreno MT. Luminescent One- And Two-Dimensional Extended Structures and a Loosely Associated Dimer Based on Platinum(II)–Thallium(I) Backbones. Inorg Chem 2008; 47:3651-60. [DOI: 10.1021/ic702180c] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Forniés
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain, and Departamento de Química-Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006 Logroño, Spain
| | - Ana García
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain, and Departamento de Química-Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006 Logroño, Spain
| | - Elena Lalinde
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain, and Departamento de Química-Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006 Logroño, Spain
| | - M. Teresa Moreno
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain, and Departamento de Química-Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006 Logroño, Spain
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13
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de Silva N, Laufenberg JW, Dahl LF. Structural/bonding insights from new geometrical varieties of two Pt-Au carbonyl/phosphine clusters, [Pt3(AuPPh3)5(mu2-CO)2L3]+ (L3 = (CO)2PPh3) and [(mu6-Au){Pt3(mu2-CO)3L4}2]+ (L = PMe3). Chem Commun (Camb) 2006:4437-9. [PMID: 17057869 DOI: 10.1039/b609380a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural/bonding considerations of two new Pt-Au clusters, [Pt3(AuPPh3)5(mu2-CO)2(CO)2PPh3]+ (1) and [(mu6-Au){Pt3(mu2-CO)3(PMe3)4}2]+ (2) isolated (as chloride salts), revealed: (i) that the heretofore unknown 20-electron Pt-centered Pt2Au5 icosahedral cage fragment (five missing vertices) of is best viewed as a 44-electron triangular Pt3 adduct of a nearly planar 39-electron [Pt3(mu2-CO)2L3]+ (L3 = (CO)2PPh3) and five one-electron donating AuPPh3 ligands; and (ii) that the geometrically distorted trimethylphosphine "full" Pt3AuPt3 sandwich of is the first example of two nucleophilic 44-electron triangular Pt3(mu2-CO)3L4 (3 : 3 : 4) units (L = PMe3) which asymmetrically encapsulate a central electrophilic Au(I).
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Affiliation(s)
- Namal de Silva
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave, Madison, WI 53706, USA
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