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  • 1
    Electronic Resource
    Electronic Resource
    Electronic structure of organometallic compounds. Part 28. Photoelectron spectra of transition-metal-1-methylborinato complexes in the outer valence region. Semiempirical model calculations based on Green's function formalism (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 2129-2138 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100257a002
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  • 2
    Electronic Resource
    Electronic Resource
    Trans insertion of activated, symmetrically disubstituted acetylenes into the metal-hydrogen bond of bis(cyclopentadienyl)metal hydrides of rhenium, tungsten, and molybdenum (1987)
    s.l. : American Chemical Society
    Organometallics 6 (1987), S. 1924-1930 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00152a016
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  • 3
    Electronic Resource
    Electronic Resource
    Reactivity of a labile molybdenocene olefin complex with organic .pi.-acceptors (1987)
    s.l. : American Chemical Society
    Organometallics 6 (1987), S. 2331-2336 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00154a011
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  • 4
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, VIII: Ein neuer Weg zu Alkalimetallborinaten. Synthesen von Ruthenium-, Osmium-, Rhodium- und Platin-Verbindungen mit Borinat-Liganden (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 2382-2388 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, VIII: A New Route to Alkalimetal Borinates. Syntheses of Ruthenium, Osmium, Rhodium, and Platinum Compounds with Borinate LigandsDegradation of bis(borinato)cobalt complexes Co(C5H5B — R)2(R = C6H5, CH3) with alkalimetal cyanides MCN (M = Na, K) yields alkalimetal borinates M[C5H5B — R]. These are versatile synthetic intermediates as demonstrated by the syntheses of Ru(C5H5B — R)2 (R = C6H5, CH3), Os(C5H5B — C6H5)2, Rh(1,5-C8H12)(C5H5B — R), and Pt(CH3)3(C5H5B — C6H5).
    Notes: Der Abbau von Bis(borinato)kobalt-Komplexen Co(C5H5B — R)2 (R = C6H5, CH3) mit Alkalimetallcyaniden MCN (M = Na, K) liefert Alkalimetallborinate M[C5H5B — R]. Diese sind vielseitige Synthesezwischenprodukte, wie mit der Darstellung von Ru (C5H5B — R)2 (R = C6H5,CH3), Os(C5H5B — C6H5)2, Rh(1,5-C8H12)(C5H5B — R) und Pt(CH3)3((C5H5B — C6H5) gezeigt wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090704
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  • 5
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, IX. Paramagnetische Chrom-Komplexe des 1-Methyl- und 1-Phenylborinat-Ions (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 816-819 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, IX. Paramagnetic Chromium Complexes of 1-Methylborinate and 1-Phenylborinate IonsPotassium borinates, K[C5H5B-R] (R = CH3, C6H5), react with CrCl3 or CrCl2·THF to give paramagnetic bis(borinato)chromium complexes, Cr(C5H5B-R)2 (R = CH3, C6H5). For these a sandwich structure with a 16-electron valence shell is proposed.
    Notes: Durch Umsetzung von Kaliumborinaten, K[C5H5B-R] (R = CH3, C6H5), mit CrCl3 oder CrCl2·THF werden paramagnetische Bis(borinato)chrom-Komplexe, Cr(C5H5B-R)2 (R = CH3, C6H5), erhalten. Für diese wird eine Sandwich-Struktur mit einer 16-Elektronen-Valenzschale vorgeschlagen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100303
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  • 6
    Electronic Resource
    Electronic Resource
    (η-1,5-Cyclooctadien)(1-4-η-1-phenyl-1-borato-1,3-cycloheptadien)rhodium  -  ein Komplex mit einem neuartigen B-C-Liganden (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 1171-1174 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (η-1,5-Cyclooctadiene)(1-4-η-1-phenyl-1-borato-1,3-cycloheptadiene)rhodium - a Complex with a Novel B-C LigandThe title complex 6 which represents the first example of the novel 1-4-η-1-borato-1,3-butadiene type structure is obtained by reaction of 1-phenyl-4,5-dihydro-1H-borepin with LiC(CH3)3 and [Rh(1,5-C8H12)Cl]2. The constitution of this 16-electron complex and the presence of a rhodiumboron bond is proved by spectroscopic methods.
    Notes: Der Titelkomplex 6, welcher das erste Beispiel des neuartigen 1-4-η-1-Borato-1,3-butadien-Strukturtyps darstellt, wird durch Umsetzung von 1-Phenyl-4,5-dihydro-1H-borepin mit LiC(CH3)3 und [Rh(1,5-C8H12)Cl]2 erhalten. Die Konstitution dieses 16-Elektronen-Komplexes und das Vorliegen einer Bor-Rhodium-Bindung wird mit spektroskopischen Methoden bewiesen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100341
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  • 7
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, X. Bildung von Borinato-Liganden aus einem 1-Bora-2,5-cyclohexadien-Derivat in Komplexen von Mangan, Rhenium und Eisen (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 1167-1170 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, X. Formation of Borinato Ligands from a 1-Bora-2,5-cyclohexadiene Derivative in Complexes of Manganese, Rhenium, and IronBorinato complexes LMn(CO)3, LRe(CO)3, and FeL2 (3-5), where L is the 4-methyl-1-phenylborinato ligand, are obtained by thermal reaction of 4,4-dimethyl-1-pheny-1-bora-2,5-cyclohexadiene (1) with Mn2 (CO)10 and Re2(CO)10 and by thermolysis of tricarbonyl(4,4-dimethyl-1-phenyl-1-bora-2,5-cyclohexadiene)iron (2).
    Notes: Borinato-Komplexe LMn(CO)3, LRe(CO)3 und FeL2 (3-5), wo L der 4-Methyl-1-phenylborinato-Ligand ist, werden durch thermische Reaktion von 4,4-Dimethyl-1-phenyl-1 bora-2,5-cyclohexadien (1) mit Mn2(CO)10 und Re2(CO)10 und durch Thermolyse von Tricarbonyl-(4,4-dimethyl-1-phenyl-1-bora-2,5-cyclohexadien)eisen (2) erhalten.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100340
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  • 8
    Electronic Resource
    Electronic Resource
    Derivate des Borols, V. Synthese von [1-(Diisopropylamino)borol]metall-Komplexen und das Diels-Alder-Dimere des 1-(Diisopropylamino)borols (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 4303-4313 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Derivatives of Borole, V. Synthesis of [1-(Diisopropylamino)borole]metal Complexes and the Diels-Alder Dimer of 1-(Diisopropylamino)boroleLithium [1-(diisopropylamino)borolenediide], Li2[C4H4BN(iPr)2] (Li2 · 1), upon oxidation with SnCl2 forms the Diels-Alder dimer 2 of 1-(diisopropylamino)borole (1). Li2 · 1 is a versatile reagent for the formation of [1-(diisopropylamino)borole]metal complexes. Suitable substrates inter alia are metal halides (CoBr2 · DME, NiCl2 · DME), organometallic metal halides, and simple metal halides in the presence of CO. Thermal reactions of 2 with carbonyl compounds may also give borole complexes. 15 compounds of Cr, Mn, Fe, Co, Ni, Ru, and Rh (3-17), including the triple-decked complexes (μ-1)Co2(1)2 (11), (μ-1)Rh2(1)2 (7), (μ-1)-Rh2(C2H4)4 (5) and (μ-1)Ni2(C5H5)2 (9) as well as paramagnetic Mn(CO)(1)2 (13) are described.
    Notes: Lithium-[1-(diisopropylamino)borolendiid], Li2[C4H4BN(iPr)2] (Li2 · 1), bildet bei der Oxidation mit SnCl2 das Diels-Alder-Dimere 2 von 1-(Diisopropylamino)borol (1). Li2 · 1 ist ein vielseitiges Reagens zur Synthese von [1-(Diisopropylamino)borol]metall-Komplexen. Geeignete Substrate sind unter anderem Metallhalogenide (CoBr2 · DME, NiCl2 · DME), metallorganische Metallhalogenide und einfache Metallhalogenide in Gegenwart von CO. Thermische Reaktionen von 2 mit Carbonyl-Verbindungen vermögen ebenfalls Borol-Komplexe zu liefern. 15 Verbindungen von Cr, Mn, Fe, Co, Ni, Ru und Rh (3-17) werden beschrieben, darunter die Tripeldecker-Komplexe (μ-1)Co2(1)2 (11), (μ-1)Rh2(1)2 (7), (μ-1)-Rh2(C2H4)4 (5) und (μ-1)Ni2(C5H5)2 (9) sowie das paramagnetische Mn(CO)(1)2(13).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851181103
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  • 9
    Electronic Resource
    Electronic Resource
    Synthese und Reaktivität von 2-Borolenen und von 3-Borolenen (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 420-433 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactivity of 2-Borolenes and of 3-BorolenesC-Unsubstituted 3-borolenes C4H6BR (1) with alkyl, aryl, or dialkylamino substituents at boron are obtained by treating RBX2 (MeBBr2, C6H11BCl2, PhBCl2, o-TolBCl2, MesBCl2, Me2NBCl2, Et2NBCl2, (iPr)2NBCl2) with Mg(C4H6) · 2 THF in ether. Catalytic isomerization reactions produce the corresponding 2-borolenes C4H6BR (2) (R = Ph, NMe2, NEt2, N(iPr)2). Additional 2-borolenes (R = Me, Ph, Cl, OMe) can be obtained efficiently via 1-(diisopropylamino)-2-borolene (2h). Addition of organolithium reagents (LiMe, LiPh) and subsequent treatment with HCl in Et2O affords 1-R-2-borolenes (R = Me, Ph). Addition of polar reagents HX (HCl, MeOH) and subsequently of HCl in Et2O produces 1-heterosubstituted 2-borolenes (R = Cl, OMe). All borolenes are highly air- and watersensitive liquids of high reactivity. In addition to the usual characterization a number of simple crystalline derivatives, including some boratacyclopentene salts, are also described.
    Notes: C-Unsubstituierte 3-Borolene C4H6BR (1) mit Alkyl-, Aryl- oder Dialkylamino-Substituenten am Bor werden durch Umsetzung von RBX2 (MeBBr2, C6H11BCl2, PhBCl2, o-TolBCl2, MesBCl2, Me2NBCl2, Et2NBCl2, (iPr)2NBCl2) mit Mg(C4H6) · 2 THF in Ether erhalten. Katalytische Isomerisierungsreaktionen liefern die entsprechenden 2-Borolene C4H6BR (2) (R = Ph, NMe2, NEt2, N(iPr)2). Weitere 2-Borolene (R = Me, Ph, Cl, OMe) können günstig mit Hilfe von 1-(Diisopropylamino)-2-borolen (2h) erhalten werden. Addition von lithiumorganischen Agenzien (LiMe, LiPh) und anschließende Behandlung mit HCl in Et2O liefert 1-R-2-borolene (R = Me, Ph). Addition von polaren Agenzien HX (HCl, MeOH) und danach von HCl in Et2O ergibt 1-heterosubstituierte 2-Borolene (R = Cl, OMe). Alle Borolene sind sehr luft- und wasserempfindliche Flüssigkeiten von hoher Reaktivität. Zusätzlich zur üblichen Charakterisierung werden einige einfache kristallisierte Derivate beschrieben, darunter einige Boratacyclopenten-Salze.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861190205
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  • 10
    Electronic Resource
    Electronic Resource
    Tripeldecker-Komplexe, V. Der Mechanismus des nucleophilen Abbaus von μ-[η5-(1-Phenylborol)]bis[η5-(1-phenylborol)rhodium] (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 615-619 
    Details
    ISSN: 0009-2940
    Keywords: Triple-decker complexes ; Nucleophilic degradation ; 1H-Borole ; (1-Phenylborole)rhodium complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Triple-Decked Complexes, V. - The Mechanism of the Nucleophilic Degradation of μ-[η5-(1-Phenylborole)]bis[η5-(1-phenylborole)rhodium]Reversible nucleophilic degradation of the triple-decked complex Rh2(C4H4BPh)3 (1) with small and basic phosphanes (e.g. PEt3) and amines (e.g. NH3) L produces salts [(C4H4BPh)RhL3][Rh(C4H4BPh)2] (4) while bulky and/or less basic nucleophiles (e.g.PiPr3, PCl3 and NHEt2, PhNH2) do not react. The hydrido[tris(1-pyrazolyl)borato] complex (C4H4BPh)Rh[BH(C3H3N2)3](5) is formed in the system 1/NH3/NMe4Cl/K[BH(C3H3N2)3]. The nucleophilic degradation follows a second-order rate law, being firstorder in both 1 and L; activation parameters and equilibrium constants were determined for L = PMe3, PEt3 and P(OMe)3. An associative mechanism is proposed. The rate-determining step is a lateral nucleophilic attack at one of the metal centres with concomitant slippage from η5- to η3-bonding; this is then followed by fast addition of two further ligand molecules.
    Notes: Der reversible nucleophile Abbau des Tripeldeckerkomplexes Rh2(C4H4BPh)3 (1) durch kleine und basische Phosphane (wie PEt3) und Amine (wie NH3) L erzeugt Salze [(C4H4BPh)RhL3]-[Rh(C4H4BPh)2] (4), während sterisch anspruchsvolle und/oder weniger basische Nucleophile (wie PiPr3, PCl3 und NHEt2, PhNH2) nicht reagieren. Der Hydrido[tris(1-pyrazolyl)borato]-Komplex (C4H4BPh)Rh[BH(C3H3N2)3] (5) bildet sich im System 1/NH3/NMe4Cl/K[BH(C3H3N2)3]. Der nucleophile Abbau folgt einem Geschwindigkeitsgesetz 2. Ordnung und ist 1. Ordnung in 1 und L; Aktivierungsparameter und Gleichgewichtskonstanten wurden für L = PMe3, PEt3 und P(OMe)3 bestimmt. Ein assoziativer Mechanismus wird vorgeschlagen: Der geschwindigkeitsbestimmende Schritt ist ein lateraler nucleophiler Angriff an einem der beiden Metallzentren, welches gleichzeitig eine η5-η3-Umlagerung erleidet; darauf folgt die schnelle Addition von zwei weiteren Ligandmolekülen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220405
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