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Duneş G, Chapple PM, Kahlal S, Roisnel T, Carpentier JF, Saillard JY, Sarazin Y. Barium phosphidoboranes and related calcium complexes. Dalton Trans 2024; 53:6892-6905. [PMID: 38567539 DOI: 10.1039/d4dt00487f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The attempted synthesis of [{Carb}BaPPh2] (1) showed this barium-phosphide and its thf adducts, 1·thf and 1·(thf)2, to be unstable in solution. Our strategy to circumvent the fragility of these compounds involved the use of phosphinoboranes HPPh2·BH3 and HPPh2·B(C6F5)3 instead of HPPh2. This allowed for the synthesis of [{Carb}Ae{PPh2·BH3}] (Ae = Ba, 2; Ca, 3), [{Carb}Ca{(H3B)2PPh2}·(thf)] (4), [{Carb}Ba{PPh2·B(C6F5)3}] (5), [{Carb}Ba{O(B(C6F5)3)CH2CH2CH2CH2PPh2}·thf] (6), [Ba{O(B(C6F5)3)CH2CH2CH2CH2PPh2}2·(thf)1.5] (7) and [Ba{PPh2·B(C6F5)3}2·(thp)2] (8) that were characterised by multinuclear NMR spectroscopy (thp = tetrahydropyran). The molecular structures of 4, 6 and 8 were validated by X-ray diffraction crystallography, which revealed the presence of Ba⋯F stabilizing interactions (ca. 9 kcal mol-1) in the fluorine-containing compounds. Compounds 6 and 7 were obtained upon ring-opening of thf by their respective precursors, 5 and the in situ prepared [Ba{PPh2·B(C6F5)3}2]n. By contrast, thp does not undergo ring-opening under the same conditions but affords clean formation of 8. DFT analysis did not highlight any specific weakness of the Ba-P bond in 1·(thf)2. The instability of this compound is instead thought to stem from the high energy of its HOMO, which contains the non-conjugated P lone pair and features significant nucleophilic reactivity.
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Affiliation(s)
- Gabriel Duneş
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000 Rennes, France.
| | | | - Samia Kahlal
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000 Rennes, France.
| | | | | | | | - Yann Sarazin
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000 Rennes, France.
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Barrett AGM, Crimmin MR, Hill MS, Procopiou PA. Heterofunctionalization catalysis with organometallic complexes of calcium, strontium and barium. Proc Math Phys Eng Sci 2010. [DOI: 10.1098/rspa.2009.0558] [Citation(s) in RCA: 231] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Despite the routine employment of Grignard reagents and Hauser bases as stoichiometric carbanion reagents in organic and inorganic synthesis, a defined reaction chemistry encompassing the heavier elements of Group II (M = Ca, Sr and Ba) has, until recently, remained unreported. This article provides details of the recent progress in heavier Group II catalysed small molecule transformations mediated by well-defined heteroleptic and homoleptic complexes of the form LMX or MX
2
; where L is a mono-anionic ligand and X is a reactive σ-bonded substituent. The intra- and intermolecular heterofunctionalization (hydroamination, hydrophosphination, hydrosilylation and hydrogenation) of alkenes, alkynes, dienes, carbodiimides, isocyanates and ketones is discussed.
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Affiliation(s)
- Anthony G. M. Barrett
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK
| | - Mark R. Crimmin
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Panayiotis A. Procopiou
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK
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Observation and Interpretation of Structural Variety in Alkaline Earth Metal Derivatives of Diphosphanyldisiloxane. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200900725] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Crimmin MR, Arrowsmith M, Barrett AGM, Casely IJ, Hill MS, Procopiou PA. Intramolecular Hydroamination of Aminoalkenes by Calcium and Magnesium Complexes: A Synthetic and Mechanistic Study. J Am Chem Soc 2009; 131:9670-85. [DOI: 10.1021/ja9003377] [Citation(s) in RCA: 237] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mark R. Crimmin
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Merle Arrowsmith
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Anthony G. M. Barrett
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Ian J. Casely
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Panayiotis A. Procopiou
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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Verma A, Guino-o M, Gillett-Kunnath M, Teng W, Ruhlandt-Senge K. Ion Association Trends in Alkaline Earth-Metal Tetraphenylborates. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200900081] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Gärtner M, Görls H, Westerhausen M. Arylphosphanide Complexes of the Alkaline-Earth Metals Magnesium, Calcium, Strontium, and Barium of the Formula (THF)nM[P(H)Ph]2 and Formation of Potassium Diphenylphosphinomagnesiates. Inorg Chem 2008; 47:1397-405. [DOI: 10.1021/ic702148v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Gärtner
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität, August-Bebel-Strasse 2, Jena D-07743, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität, August-Bebel-Strasse 2, Jena D-07743, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität, August-Bebel-Strasse 2, Jena D-07743, Germany
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Crimmin MR, Barrett AGM, Hill MS, Hitchcock PB, Procopiou PA. Bis(diphenylphosphido) Derivatives of the Heavier Group 2 Elements. Inorg Chem 2007; 46:10410-5. [DOI: 10.1021/ic701608x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mark R. Crimmin
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Michael S. Hill
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Peter B. Hitchcock
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Panayiotis A. Procopiou
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K., The Chemistry Laboratory, University of Sussex, Falmer, Brighton, East Sussex BN1 9QJ, U.K., and GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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Gärtner M, Görls H, Westerhausen M. Arylphosphanide Complexes of the Heavy Alkaline Earth Metals Calcium, Strontium and Barium of the Formula (thf)nM[P(R)Aryl]2. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700256] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Gärtner M, Görls H, Westerhausen M. Synthesis and Molecular Structures of Phenylamides of Magnesium, Calcium, Strontium, and Barium − From Molecular to Polymeric Structures. Inorg Chem 2007; 46:7678-83. [PMID: 17691772 DOI: 10.1021/ic7010524] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several preparative procedures for the synthesis of the THF complexes of the alkaline earth metal bis(phenylamides) of Mg (1), Ca (2), Sr (3), and Ba (4) are presented such as metalation of aniline with strontium and barium, metathesis reactions of MI2 with KN(H)Ph, and metalation of aniline with arylcalcium compounds or dialkylmagnesium. The THF content of these compounds is rather low and an increasing aggregation is observed with the size of the metal atom. Thus, tetrameric [(THF)2Ca{mu-N(H)Ph}2]4 (2) and polymeric [(THF)2Sr{mu-N(H)Ph}2]infinity and {[(THF)2Ba{mu-N(H)Ph}2]2[(THF)Ba{mu-N(H)Ph}2]2}infinity show six-coordinate metal atoms with increasing interactions to the pi systems of the phenyl groups with increasing the radius of the alkaline earth metal atom.
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Affiliation(s)
- Martin Gärtner
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena August-Bebel-Str. 2, D-07743 Jena, Germany
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Westerhausen M, Sapelza G, Mayer P. Formation of an oxygen-centered Ba2Zn4 octahedron via hydrolysis of barium 1,3-dimethyl-2,4-bis[tri(tert-butyl)silyl]-1,3-dizinca-2,4-diphosphetane-2,4-diide. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Blair S, Izod K, Clegg W, Harrington RW. Complexes of the Heavier Alkaline Earth Metals Ca, Sr, and Ba with O-Functionalized Phosphanide Ligands. Inorg Chem 2004; 43:8526-31. [PMID: 15606202 DOI: 10.1021/ic048978a] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metathesis reactions between either SrI(2) or BaI(2) and 2 equiv of the potassium phosphanide [[(Me(3)Si)(2)CH]-(C(6)H(4)-2-OMe)P]K yield, after recrystallization, the complexes [[([Me(3)Si](2)CH)(C(6)H(4)-2-OMe)P](2)M(THF)(n)] [M = Sr, n = 2 (5); Ba, n = 3 (6)]. Similar metathesis reactions between MI(2) and 2 equiv of the more sterically demanding potassium phosphanide [[(Me(3)Si)(2)CH](C(6)H(3)-2-OMe-3-Me)P]K yield the chemically isostructural complexes [[([Me(3)Si](2)CH)(C(6)H(3)-2-OMe-3-Me)P](2)M(THF)(2)] [M = Ca (9), Sr (7), Ba (8)]. Compounds 5-9 have been characterized by multi-element NMR spectroscopy and X-ray crystallography. Complex 9 is thermally unstable and decomposes at room temperature to give the tertiary phosphane [(Me(3)Si)(2)CH](C(6)H(3)-2-OMe-3-Me)P(Me) and an unidentified Ca-containing product. Compounds 5 and 6 also decompose at elevated temperatures to give the corresponding tertiary phosphane [(Me(3)Si)(2)CH](C(6)H(4)-2-OMe)P(Me) and intractable metal-containing products. The decomposition of 5, 6, and 9 suggests that these compounds undergo an intramolecular methyl migration from the O atom in one phosphanide ligand to the P atom of an adjacent phosphanide ligand to give species containing dianionic alkoxo-phosphanide ligands.
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Affiliation(s)
- Stuart Blair
- Department of Chemistry, School of Natural Sciences, Bedson Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
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Blair S, Izod K, Clegg W, Harrington R. Organomagnesium Phosphanide“Grignard” Analogues− Synthesis, Structural Characterisation and Solution Behaviour of [BuMg{P(CH[SiMe3]2)(C6H3-2-OMe-3R)}]2 [R = H, Me]. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300166] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Blair S, Izod K, Clegg W. A homologous series of alkaline earth phosphanides: syntheses, crystal structures, and unusual dynamic behavior of (THF)(n)M[P(CH(SiMe(3))(2))(C(6)H(4)-2-CH(2)NMe(2))](2) (M = Mg, Ca, Sr, Ba). Inorg Chem 2002; 41:3886-93. [PMID: 12132912 DOI: 10.1021/ic0201194] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The secondary phosphine R(Me(2)NCH(2)-2-C(6)H(4))PH reacts with Bu(2)Mg to give the homoleptic complex Mg[PR(C(6)H(4)-2-CH(2)NMe(2))](2) (1) [R = CH(SiMe(3))(2)]. The analogous heavier alkaline earth metal complexes (THF)(n)Ae[PR(C(6)H(4)-2-CH(2)NMe(2))](2) [Ae = Ca (2), n = 0; Ae = Sr (3), Ba (4), n = 1] have been synthesized by metathesis reactions between K[PR(C(6)H(4)-2-CH(2)NMe(2))] and 0.5 equiv of the respective alkaline earth metal diiodide. Compounds 1-4 have been characterized by X-ray crystallography and multielement NMR spectroscopy. In the solid state, compounds 1-4 are monomeric, complexes 1 and 2 adopting a distorted tetrahedral geometry and complexes 3 and 4 adopting a distorted square pyramidal geometry (1: orthorhombic, P2(1)2(1)2(1), a = 11.413(3) A, b = 12.072(3) A, c = 32.620(11) A, Z = 4. 2: monoclinic, P2(1)/c, a = 9.5550(4) A, b = 17.4560(7) A, c = 24.5782(10) A, beta = 91.673(2) degrees, Z = 4. 3: monoclinic, C2/c, a = 15.0498(9) A, b = 13.0180(8) A, c = 24.3664(14) A, beta = 104.593(2) degrees, Z = 4. 4: monoclinic, C2/c, a = 15.2930(10) A, b = 13.0326(9) A, c = 24.6491(17) A, beta = 105.542(2) degrees, Z = 4). In toluene solution, compounds 2-4 are subject to dynamic processes which are attributed to a monomer-dimer equilibrium for which bridge-terminal exchange of the phosphanide ligands in the dimer may be frozen out at low temperatures.
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Affiliation(s)
- Stuart Blair
- Department of Chemistry, Bedson Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, U.K
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Affiliation(s)
- Martin Kaupp
- Institut für Anorganische Chemie Universität Würzburg Am Hubland, 97074 Würzburg, Germany, Fax: (+49) 931‐888‐7135
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Abstract
Under certain circumstances, metal complexes with a formal d(0) electronic configuration may exhibit structures that violate the traditional structure models, such as the VSEPR concept or simple ionic pictures. Some examples of such behavior, such as the bent gas-phase structures of some alkaline earth dihalides, or the trigonal prismatic coordination of some early transition metal chalcogenides or pnictides, have been known for a long time. However, the number of molecular examples for "non-VSEPR" structures has increased dramatically during the past decade, in particular in the realm of organometallic chemistry. At the same time, various theoretical models have been discussed, sometimes controversially, to explain the observed, unusual structures. Many d(0) systems are important in homogeneous and heterogeneous catalysis, biocatalysis (e.g. molybdenum or tungsten enzymes), or materials science (e.g. ferroelectric perovskites or zirconia). Moreover, their electronic structure without formally nonbonding d orbitals makes them unique starting points for a general understanding of structure, bonding, and reactivity of transition metal compounds. Here we attempt to provide a comprehensive view, both of the types of deviations of d(0) and related complexes from regular coordination arrangements, and of the theoretical framework that allows their rationalization. Many computational and experimental examples are provided, with an emphasis on homoleptic mononuclear complexes. Then the factors that control the structures are discussed in detail. They are a) metal d orbital participation in sigma bonding, b) polarization of the outermost core shells, c) ligand repulsion, and d) pi bonding. Suggestions are made as to which of the factors are the dominant ones in certain situations. In heteroleptic complexes, the competition of sigma and pi bonding of the various ligands controls the structures in a complicated fashion. Some guidelines are provided that should help to better understand the interrelations. Bent's rule is of only very limited use in these types of systems, because of the paramount influence of pi bonding. Finally, computed and measured structures of multinuclear complexes are discussed, including possible consequences for the properties of bulk solids.
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Affiliation(s)
- Martin Kaupp
- Institut für Anorganische Chemie Universität Würzburg Am Hubland, 97074 Würzburg (Germany)
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Izod K, Clegg W, Liddle ST. Parallels between the Chemistry of Calcium(II) and Ytterbium(II). Synthesis and Crystal Structure of a Calcium Alkoxo-Phosphide Cuboidal Complex. Organometallics 2000. [DOI: 10.1021/om000357b] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Keith Izod
- Department of Chemistry, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, U.K
| | - William Clegg
- Department of Chemistry, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, U.K
| | - Stephen T. Liddle
- Department of Chemistry, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, U.K
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Westerhausen M, Schneiderbauer S, Knizek J, Nöth H, Pfitzner A. Magnesiation of Triisopropylsilylphosphane: Synthesis and Structures of New Mg2nP2m Polyhedra. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(199912)1999:12<2215::aid-ejic2215>3.0.co;2-v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Westerhausen M, Digeser MH, Nöth H, Ponikwar W, Seifert T, Polborn K. 2,5-Diphenyl-3,4-bis(trimethylsilyl)-1-phosphacyclopentadienide as a Ligand at Calcium, Strontium, and Tin(II). Inorg Chem 1999. [DOI: 10.1021/ic981132k] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias Westerhausen
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
| | - Matthias H. Digeser
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
| | - Heinrich Nöth
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
| | - Werner Ponikwar
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
| | - Thomas Seifert
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
| | - Kurt Polborn
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, Haus D, D-81377 München, Germany
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Westerhausen M, Digeser MH, Nöth H, Seifert T, Pfitzner A. A Unique Barium−Carbon Bond: Mechanism of Formation and Crystallographic Characterization. J Am Chem Soc 1998. [DOI: 10.1021/ja980535g] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Westerhausen
- Contribution from the Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Meiserstrasse 1, D-80333 München, Germany, and Institut für Anorganische Chemie, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Matthias H. Digeser
- Contribution from the Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Meiserstrasse 1, D-80333 München, Germany, and Institut für Anorganische Chemie, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Heinrich Nöth
- Contribution from the Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Meiserstrasse 1, D-80333 München, Germany, and Institut für Anorganische Chemie, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Thomas Seifert
- Contribution from the Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Meiserstrasse 1, D-80333 München, Germany, and Institut für Anorganische Chemie, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Arno Pfitzner
- Contribution from the Institut für Anorganische Chemie, Ludwig-Maximilians-Universität, Meiserstrasse 1, D-80333 München, Germany, and Institut für Anorganische Chemie, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
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Westerhausen M, Digeser MH, Wieneke B, Nöth H, Knizek J. Oligomeric Solvent-Free Magnesium Bis(phosphanides) − Molecular Structure of Trimeric Magnesium Bis[bis(trimethylsilyl)phosphanide]. Eur J Inorg Chem 1998. [DOI: 10.1002/(sici)1099-0682(199804)1998:4<517::aid-ejic517>3.0.co;2-d] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Syntheses and structure of dimeric yttrium tris [bis(trimethylsilyl) phosphanide]; X-ray structures of [(thf)LiCl·(thf)2LiPtBu2]2 and Y[CH(SiMe3)2]3. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05776-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Westerhausen M, Digeser MH, Knizek J, Schwarz W. Monomeric and Dimeric Tetrahydrofuran Complexes of Barium Bis[bis(dimethyl-tert-butylsilyl)arsanide]. Inorg Chem 1998. [DOI: 10.1021/ic9710770] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Westerhausen
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität München, Meiserstrasse 1, D-80333 München, Germany
| | - Matthias H. Digeser
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität München, Meiserstrasse 1, D-80333 München, Germany
| | - Jörg Knizek
- Institut für Anorganische Chemie, Ludwig-Maximilians-Universität München, Meiserstrasse 1, D-80333 München, Germany
| | - Wolfgang Schwarz
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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Matthias Westerhausen M, Digeser MH, Schwarz W. Synthese, NMR-spektroskopische Charakterisierung und Struktur von Bis(1,2-dimethoxyethan-O,O?)barium-bis[1,3-bis(trimethylsilyl)-2-phenyl-1-aza-3-phosphapropenid]. Z Anorg Allg Chem 1997. [DOI: 10.1002/zaac.19976230809] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Westerhausen M, Lang G, Schwarz W. Synthesis and Dynamic Behavior of the Dimeric, Monocyclic Barium Bis[bis(isopropyldimethylsilyl)phosphanide] – Molecular Structures of P(SiMe2Ph)3, of Monomeric (thf)4Ba[P(SiMe2iPr)2]2 and of the Dimer {(thf)2Ba[P(SiMe2iPr]2]2}2. ACTA ACUST UNITED AC 1996. [DOI: 10.1002/cber.19961290910] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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NMR-spektroskopische und strukturelle charakterisierung der tri-iso-propylsilylphosphanide des calciums. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)05971-q] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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