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Burgert BB, Sun X, Hauser A, Wingering PMR, Breher F, Roesky PW. Bi- and tridentate coordination behaviour of a novel bis(phosphinimino)methanide ligand. Chem Asian J 2024:e202301084. [PMID: 38197668 DOI: 10.1002/asia.202301084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/11/2024]
Abstract
Herein, we report the synthesis of a novel ferrocenyl-functionalized bis(phosphinimino)methane ligand (CH2 (PPh2 NFc)2 ). Deprotonation of CH2 (PPh2 NFc)2 with KN(SiMe3 )2 gave the dimeric species [K{CH(PPh2 NFc)2 }]2 , which was further reacted with ECl2 (E=Ge, Sn) to yield the tetrylene compounds [{CH(PPh2 NFc)2 }ECl]. The ligand and the resulting tetrylenes were examined for their electrochemical properties with the aid of cyclic voltammetry. Furthermore, the reaction of the tetrylenes [{CH(PPh2 NFc)2 }ECl] with [AuC6 F5 (tht)] resulted in the bimetallic complexes [{(AuC6 F5 )CH(PPh2 NFc)2 }ECl] with an unusual Au coordination on the ligand backbone.
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Affiliation(s)
- Bastian B Burgert
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Xiaofei Sun
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Adrian Hauser
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Perrine M R Wingering
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Frank Breher
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
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2
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Feichtner KS, Scharf LT, Scherpf T, Mallick B, Boysen N, Gessner VH. Tuning Ruthenium Carbene Complexes for Selective P-H Activation through Metal-Ligand Cooperation. Chemistry 2021; 27:17351-17360. [PMID: 34705314 PMCID: PMC9299219 DOI: 10.1002/chem.202103151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Indexed: 11/14/2022]
Abstract
The use of iminophosphoryl‐tethered ruthenium carbene complexes to activate secondary phosphine P−H bonds is reported. Complexes of type [(p‐cymene)‐RuC(SO2Ph)(PPh2NR)] (with R = SiMe3 or 4‐C6H4−NO2) were found to exhibit different reactivities depending on the electronics of the applied phosphine and the substituent at the iminophosphoryl moiety. Hence, the electron‐rich silyl‐substituted complex undergoes cyclometallation or shift of the imine moiety after cooperative activation of the P−H bond across the M=C linkage, depending on the electronics of the applied phosphine. Deuteration experiments and computational studies proved that cyclometallation is initiated by the activation process at the M=C bond and triggered by the high electron density at the metal in the phosphido intermediates. Consistently, replacement of the trimethylsilyl (TMS) group by the electron‐withdrawing 4‐nitrophenyl substituent allowed the selective cooperative P−H activation to form stable activation products.
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Affiliation(s)
- Kai-Stephan Feichtner
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
| | - Lennart T Scharf
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
| | - Thorsten Scherpf
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
| | - Bert Mallick
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
| | - Nils Boysen
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
| | - Viktoria H Gessner
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
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Li J, Zhao J, Ma G, McDonald R, Cavell RG. Mono and bis carbene neodymium(III) spirocyclic complexes with a cumulene carbon metal structure. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Li J, Zhao J, Ferguson MJ, McDonald R, Ma G, Cavell RG. Synthesis, structures and reactivity of bis(iminophosphorano)methanide chelate complexes with transition metal of cobalt, nickel, palladium and iridium. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Synthesis and structures of bis(iminophosphorano)methanide chelate complexes with zinc and group 13. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Thirumoorthi R, Chivers T. Structural Comparison of Lithium Iodide Complexes of Symmetrical and Unsymmetrical [CH2(PPh2NSiMe3)(PPh2NR)](R = SiMe3, H) Ligands. J STRUCT CHEM+ 2018. [DOI: 10.1134/s002247661805030x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Synthesis and Characterization of a Sulfonyl- and Iminophosphoryl-Functionalized Methanide and Methandiide. INORGANICS 2016. [DOI: 10.3390/inorganics4040040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Thirumoorthi R, Chivers T, Gendy C, Vargas-Baca I. CH–NH Tautomerism in the Products of the Reactions of the Methanide [HC(PPh2NSiMe3)2]− with Pnictogen and Tellurium Iodides. Organometallics 2013. [DOI: 10.1021/om400649c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ramalingam Thirumoorthi
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Chris Gendy
- Department of Chemistry
and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Ignacio Vargas-Baca
- Department of Chemistry
and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
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Thirumoorthi R, Chivers T. Structure of the telluroketone TeC(PPh2NSiMe3)2 coordinated to an Li8O6 cluster. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Leung WP, Kan KW, Chan YC, Mak TCW. Synthesis of Hetero-Binuclear Complexes from Bisgermavinylidene. Inorg Chem 2013; 52:4571-7. [DOI: 10.1021/ic400056f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wing-Por Leung
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Kwok-Wai Kan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Yuk-Chi Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Thomas C. W. Mak
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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Mills DP, Lewis W, Blake AJ, Liddle ST. Reactivity Studies of a T-Shaped Yttrium Carbene: C–F and C–O Bond Activation and C═C Bond Formation Promoted by [Y(BIPM)(I)(THF)2] (BIPM = C(PPh2NSiMe3)2). Organometallics 2013. [DOI: 10.1021/om301016j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
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Wooles AJ, Gregson M, Cooper OJ, Middleton-Gear A, Mills DP, Lewis W, Blake AJ, Liddle ST. Group 1 Bis(iminophosphorano)methanides, Part 1: N-Alkyl and Silyl Derivatives of the Sterically Demanding Methanes H2C(PPh2NR)2 (R = Adamantyl and Trimethylsilyl). Organometallics 2011. [DOI: 10.1021/om200553s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ashley J. Wooles
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Matthew Gregson
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Oliver J. Cooper
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Amy Middleton-Gear
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
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Ma G, McDonald R, Cavell RG. A Spirocyclic, Bimetallic, Carbon-Bridged Bis(iminophosphorano)methanediide Complex of Palladium(II): Synthesis, Crystal Structure, Solution Behavior, and DFT Bonding Analysis. Organometallics 2009. [DOI: 10.1021/om900571k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guibin Ma
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Ronald G. Cavell
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Orzechowski L, Jansen G, Lutz M, Harder S. Calcium carbene complexes with boranophosphorano side-arms: CaC[P(Ph)2BH3]2. Dalton Trans 2009:2958-64. [DOI: 10.1039/b823224e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hull KL, Carmichael I, Noll BC, Henderson KW. Homo- and Heterodimetallic Geminal Dianions Derived from the Bis(phosphinimine) {Ph2P(NSiMe3)}2CH2 and the Alkali Metals Li, Na, and K. Chemistry 2008; 14:3939-53. [DOI: 10.1002/chem.200701976] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Tamm M, Petrovic D, Randoll S, Beer S, Bannenberg T, Jones PG, Grunenberg J. Structural and theoretical investigation of 2-iminoimidazolines ? carbene analogues of iminophosphoranes. Org Biomol Chem 2007; 5:523-30. [PMID: 17252136 DOI: 10.1039/b615418b] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of 2-iminoimidazolines - has been accomplished by the Staudinger reaction of the carbenes 1,3-di-tert-butylimidazolin-2-ylidene (), 1,3-diisopropyl-4,5-dimethylimidazolin-2-ylidene (), 1,3-diisopropylimidazolin-2-ylidene (), 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene (), 1,3-bis(2,6-diisopropylphenylimidazolin-2-ylidene () and 1,3,4,5-tetramethylimidazolin-2-ylidene () with trimethylsilyl azide (Me3SiN3) followed by desilylation of the resulting 2-trimethylsilyliminoimidazolines -. The X-ray crystal structures of and have been established, revealing C1-N1-Si1 angles that are more obtuse than the corresponding P-N-Si angles observed in related trimethylsilyl iminophosphoranes. Together with , the disilylated side product 1,3-diisopropyl-2-(trimethylsilylimino)-4-trimethylsilylimidazoline () has been isolated and structurally characterized. Cleavage of the N-Si bonds in and formation of is easily achieved by stirring in methanol. The molecular structures of the 2-iminoimidazolines are reported, indicating that the structural parameters are best described by non-ylidic resonance structures and that electron delocalization within the imidazole heterocycle does not play a crucial role in these imine systems. Compound forms a head-to-head dimer in the solid state via weak intermolecular N-H...N contacts, which have additionally been characterized by means of compliance constants. To further analyze the electronic structure of these imines in comparison to related guanidine ligands, the proton affinities (PAs) of the model compounds 2-imino-1,3-dimethylimidazoline (), 2-imino-1,3-dimethylimidazolidine () and tetramethylguanidine () have been calculated by means of density functional theory. Finally, the charge distribution in - and the relative contribution of relevant resonance structures have been determined using natural bond orbitals (NBO) and natural resonance theory (NRT).
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Affiliation(s)
- Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina zu Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
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Orzechowski L, Jansen G, Harder S. Synthesis, Structure, and Reactivity of a Stabilized Calcium Carbene: R2CCa. J Am Chem Soc 2006; 128:14676-84. [PMID: 17090054 DOI: 10.1021/ja065000z] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Attempted 2-fold deprotonation of the bis(iminophosphorano)methane ligand, H(2)C(Ph(2)P=NSiMe(3))(2) (4-H(2)), with a calcium amide led only to mono-deprotonation. The crystal structure of (4-H)(2)Ca shows two tridentate ligands with short Ca-N and a rather long Ca-C bond. Reaction of 4-H(2) with a dibenzylcalcium complex gave the desired 2-fold deprotonation and formation of 4-Ca, which crystallized as a dimeric complex. Analysis of the calculated atomic and group charges in 4-H(2), (4-H)(2)Ca, and [4-Ca](2) showed that the negative charge at the imine nitrogens only slightly increases upon successive deprotonation of 4-H(2). The electron density at the central carbon, however, increases considerably: the charge on the carbene carbon in [4-Ca](2) is ca. -1.8. The negative charge in 4(2)(-) is therefore mainly located on the carbon. Reaction of [4-Ca](2) with benzophenone in benzene gave the remarkably stable adduct [4-Ca](2) x O=CPh(2), which was characterized by X-ray diffraction. Reaction of [4-Ca](2) with adamantylcyanide gave exclusive formation of the adduct [4-Ca](2) x (N identical withCR)(2), which did not react further, even at higher temperatures. Addition of cyclohexyl isocyanate to a benzene solution of [4-Ca](2) gave immediate [2 + 2]-cycloaddition and formation of a dianionic tetradentate ligand that binds to Ca(2+) through two nitrogens, the central carbon, and an oxygen. This product crystallized as a dimer with bridging oxygen atoms.
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Affiliation(s)
- Lars Orzechowski
- Department of Chemistry, University Duisburg-Essen, Universitätsstrasse 5-7, 45117 Essen, Germany
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Hitchcock PB, Lappert MF, Wang ZX. Bis(silylaminodiarylphosphoranylsilylmethyl-C,N)-tin(II) and -lead(II) complexes and their precursors; structures of H(LL′), H(LL″), Sn(LL″)2 and Pb(LL″)2; [LL′]−=[CH(SiMe3)P(Ph)2NSiMe3]−,. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Fang M, Jones ND, Ferguson MJ, McDonald R, Cavell RG. Water-Induced Rearrangement of a Platinacyclic Carbene Produces a Platinacyclic Carbaphosphazene with an Intraannular Pt?C Bond in a Pt?N?P?N?P?C Ring. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200461525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Fang M, Jones ND, Ferguson MJ, McDonald R, Cavell RG. Water-Induced Rearrangement of a Platinacyclic Carbene Produces a Platinacyclic Carbaphosphazene with an Intraannular Pt?C Bond in a Pt?N?P?N?P?C Ring. Angew Chem Int Ed Engl 2005; 44:2005-8. [PMID: 15726551 DOI: 10.1002/anie.200461525] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Min Fang
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Murso A, Stalke D. The C
α
‐Deprotonated Iminophosphorane Ph
2
P(CH
2
Py)(NSiMe
3
) as an
N
,
N
‐Chelating Ligand for Iron and Zinc. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400318] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Murso
- Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: (internat.) + 49‐931‐888‐4619
| | - Dietmar Stalke
- Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: (internat.) + 49‐931‐888‐4619
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Hill MS, Hitchcock PB. Three-coordinate bis(phosphinimino)methanide derivatives of ‘open shell’ [M(II)] (M=Mn, Fe, Co) transition metals. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Leung WP, So CW, Wang ZX, Wang JZ, Mak TCW. Synthesis of Bisgermavinylidene and Its Reaction with Chalcogens. Organometallics 2003. [DOI: 10.1021/om034071t] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wing-Por Leung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Cheuk-Wai So
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zhong-Xia Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jin-Zhi Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Thomas C. W. Mak
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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Ganesan M, Fanwick PE, Walton RA. Reactions of the bis(iminophosphoranyl)methane ligand CH2(Ph2PNSiMe3)2 with nickel(II) halides and the structural characterization of ligand fragmentation products. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01385-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Aparna K, Kamalesh Babu RP, McDonald R, Cavell RG. Der erste Biscarbenkomplex eines Metalls der Gruppe 4: [Zr{C(Me2P=NSiMe3)2}2]. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20011203)113:23<4535::aid-ange4535>3.0.co;2-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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