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  • 1
    Electronic Resource
    Electronic Resource
    Metallorganische Verbindungen der Lanthanoide, 89. Cyclooctatetraenyl-Komplexe der frühen Übergangsmetalle und Lanthanoide, 6. (Cyclooctatetraenyl)[N,N′-bis(trimethylsilyl)benzamidinato]-und -[diphenylbis(trimethylsilylimido)phosphinato]-Komplexe der Seltenen Erden; Röntgenstrukturanalyse von (C8H8)Tm[PhC(NSiMe3)2](THF), (C8H8)Lu[4-MeOC6H4C(NSiMe3)2](THF) und (C8H8)Nd[Ph2P(NSiMe3)2](THF) (1995)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 395-404 
    Details
    ISSN: 0009-2940
    Keywords: Lanthanides, organo-, complexes ; Cyclooctatetraenyl complexes ; Benzamidinate ligands ; Diimidophosphinate ligands ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organometallic Compounds of the Lanthanoids, 89. - Cyclooctatetraenyl Complexes of the Early Transition Metals and Lanthanoids, 6. - (Cyclooctatetraenyl)[N,N′-bis(trimethylsilyl)benzamidinato]- and -[diphenylbis(trimethylsilylimido)-phosphinato] Complexes of the Rare Earths; X-Ray Structural Analyses of (C8H8)Tm[PhC(NSiMe3)2](THF), (C8H8)Lu[4-MeOC6H4C(NSiMe3)2](THF), and (C8H8)Nd[Ph2P(NSiMe3)2](THF)[(C8H8)Ln(μ-Cl)(THF)2]2 or [(C8H8)Ln(μ-O3SCF3)(THF)2]2 (Ln = Y, Ce, Pr, Nd, Sm, Tm, Lu) react with Na[4-RC6H4C(NSiMe3)2] (R = H, OMe, CF3) or Li[PhC(NSiMe3)2] to give the monomeric (cyclooctatetraenyl)lanthanide benzamidinates (C8H8)Ln[4-RC6H4C(NSiMe3)2](THF) [R = H, Ln = Y (1), Ce (4), Pr (6), Nd (8), Sm (10), Tm (12), Lu (15); R = OMe, Ln = Y (2), Ce (5), Pr (7), Nd (9), Sm (11), Tm (13), Lu (16); R = CF3, Ln = Y (3), Tm (14), Lu (17)]. The reaction of [(C8H8)Ln(μ-Cl)(THF)2]2 (Ln = Ce, Pr, Nd, Sm) with Li[Ph2P(NSiMe3)2] in THF leads directly to the monomeric compounds (C8H8)Ln[Ph2P(NSiMe3)2](THF) [Ln = Ce (18), Pr (19), Nd (20), Sm (21)] in good yields. The 1H-, 13C-, 31P- and 29Si-NMR and mass spectra of the new compounds as well as the molecular structures of 12, 16, and 20 are discussed. The Raman spectra of the complexes 1-3, 12, and 14-17 have been studied in detail.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19951280411
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  • 2
    Electronic Resource
    Electronic Resource
    Transition-Metal Complexes with the Novel Poly (1,2,4-triazolyl)borate Ligands [HnB(C2H2N3)4 - n]- (n = 1 and 2): Synthesis and Characterization of Metal Complexes of Dihydrobis(1,2,4-triazolyl)borate as One- or Two-Dimensional Coordination Polymers with Six-Membered Ring Water Substructures and the Structure of Two-Dimensional Liquid and Solid Water As Organized in the Intercalate [Ni{HB(C2H2N3)3}2] · 6 H2O (X-ray Studies at 293 and 160 K)Dedicated to Prof. Dr. Hubert Schmidbaur on the occasion of his 60th birthday. (1995)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 235-244 
    Details
    ISSN: 0009-2940
    Keywords: Poly(triazolyl)borates, metal complexes of ; Coordination polymers ; Water, cluster model ; Water, two-dimensional structure ; Hydrogen bonding ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 1:2 manganese (5), nickel (6), and copper complex (7) with the novel dihydrobis(1,2,4-triazolyl)borate ligand (2) were synthesized and structurally characterized. Single-crystal X-ray studies reveal the formation of highly solvated coordination polymers of the formula {[M(H2O)2{μ-H2B(C2H2N3)2}2] · n H2O}∞ for M = Mn and Cu. In 5 (M = Mn; n = 4) a two-dimensional metal-ligand framework is built by means of the bridging action of 2. These metal-ligand grid sheets sandwich water layers which comprise individual six-membered rings. Compound 7 (M = Cu; n = 6) can be described as a linear metal-ligand chain with two borate ligands bridging two copper centers. These one-dimensional coordination polymers are separated by one-dimensional arrays of water molecules in the form of edge-sharing six-membered rings. In both structures the water of crystallization is held in place both by hydrogen bonding from the aqua ligands and by hydrogen bonding to the nitrogen atoms of the borate ligand. Bis[hydrotris(1,2,4-triazolyl)borato]nickel, [Ni{HB(C2H2N3)3}2] (8), was obtained from NiCl2 and the potassium salt of [HB(C2H2N3)3]- (1). Single-crystal X-ray structures of the solvate 8 · 6 H2O were determined at 293 and 160 K. The water molecules are arranged in two-dimensional layers with only weak (hydrogen bonding) interactions to the adjacent layers of the complex molecules. The room temperature structure (orthorhombic, space group Cmca) shows a highly disordered water structure being indicative of a dynamic equilibrium between small conglomerates and free molecules. Upon cooling an ordering occurs in the water layer leading to a phase transition in the crystal, and in the low-temperature structure at 160 K (orthorhombic, space group Pmnb) the hydrogen atoms and bonding network of the water structure could be determined. This structure is best described as being composed of individual rings or chain segments. The material surface morphology after loss of the water of crystallization was studied by scanning electron microscopy and the structural pattern correlated with the crystal packing.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19951280306
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  • 3
    Electronic Resource
    Electronic Resource
    1,4,7,10,13,16,19,22-Octaazacyclotetracosane-1,4,7,10,13,16,19,22-octaacetic Acid (H8OTEC) and 1,4,7,10,14,17,20,23-Octaazacyclohexacosane- 1,4,7,10,14,17,20,23-octaacetic Acid (H8OHEC): Synthesis and Characterization of Two Large Macrocyclic Polyamine Polycarboxylic Ligands and Some of Their Copper(II) and Lanthanide(III) Complexes (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 267-277 
    Details
    ISSN: 0009-2940
    Keywords: Macrocyclic ligands ; Lanthanides ; Copper ; Polyamines ; Polycarboxylic acids ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The optimized synthesis of two new macrocyclic polyamine polycarboxylic ligands, 1,4,7,10,14,17,20,23-octaazacyclohexacosane-1,4,7,10,14,17,20,23-octaacetic acid (H8OHEC) (10) and 1,4,7, 10,13,16,19,22-octaazacyclotetracosane-1,4,7,10, 13,16,19,22-octaacetic acid (H8OTEC) (12), is presented. The key step in the synthesis of both is the high yield carboxymethylation of the corresponding macrocyclic amines using tert-butyl bromoacetate followed by acidic hydrolysis of the acetate protecting groups. The molecular structures of the intermediates 1,4,7,10,14,17,20,23-octaazacyclohexacosane (OHEC-amine) (8), and octa-tert-butyl 1,4,7,10,13,16,19,22- octaazacyclotetracosane-1,4,7,10,13,16,19,22-octaacetate (OTEC-ester) (11) are determined by X-ray crystal structure analysis. OHEC-amine 8 reacts with 2 equiv. of CuSO4 yielding the dinuclear complex [Cu2(OHEC-amine)](SO4)2 (13). Complex 13 crystallizes with 16 molecules of water. 13 · 16 H2O contains two copper atoms, which are coordinated in a strongly distorted octahedral fashion by four nitrogen atoms, one oxygen atom from the sulfate dianion and one oxygen atom from a water molecule. The new ligands 10 and 12 are fully characterized by 1D- and 2D-NMR spectroscopy. Both ligands form dinuclear lanthanide(III) chelates (Ln=Y, Sm, Eu, Gd, Yb, Lu), which are stable and highly water soluble. With lanthanum(III) only mononuclear complexes are formed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300221
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  • 4
    Electronic Resource
    Electronic Resource
    Ligand-Field Control and Hydrogen Bonding as Design Elements in the Assembly and Crystallization of Poly(azolyl)borate-Metal Complexes: Chelate Complexes Versus Coordination Polymers and Symmetrical Versus Distorted Grid SheetsDedicated to Prof. Dr. Herbert Schumann on the occasion of his 60th birthday (1995)
    Weinheim : Wiley-Blackwell
    Chemistry - A European Journal 1 (1995), S. 637-644 
    Details
    ISSN: 0947-6539
    Keywords: chelate ligands ; coordination ; hydrogen bonds ; ligand fields ; polymers ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 1- and 2-D coordination polymers [Mn{HB(C2H2N3)3}2(H2O)2].4H2O (11) and [Ni{H2B(CHN4)2}2-(NH3)2] (13), respectively, and the chelate complex [Ni{H2B(C2H2N3)2}2(H2O)2] · 2H2O (12) were synthesized and structurally characterized. The compounds contain ambidentate poly(azolyl)borato ligands (azolyl = triazolyl or tetrazolyl), which can chelate or bridge metal centers. The metal-ligand structures in 11-13 differ from the known coordination modes of the poly(azolyl)borates towards other metal centers. We describe how a change in the metal and/or the conditions of crystallization affects the ligand-field stabilization energy and favors one type of nitrogen donor atom over the other for the poly(triazolyl)borato ligands. The crystal structures of 11 and 12 contain additional water of crystallization; this leads to hydrogen-bonded solvent substructures. In the case of the bis(triazolyl)borato ligands. The crystal structures of 11 and 12 contain additional water of crystallization; this leads to hydrogen-bonded solvent substructures. In the case of the bis(tetrazolyl)borato ligand the water substructure is shown to function as a “reinforcing bar” that symmetrizes the metal-ligand grid sheet.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chem.19950010912
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  • 5
    Electronic Resource
    Electronic Resource
    Homoleptic Organometallic Compounds of Zinc, Cadmium, and Mercury, Intramolecularly Stabilized by Amine Ligands (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 245-252 
    Details
    ISSN: 1434-1948
    Keywords: Alkylamines ; Arylamines ; Zinc ; Cadmium ; Mercury ; X-ray diffraction ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Homoleptic intramolecularly stabilized organozinc, -cadmium, and -mercury compounds MR2, with R bearing an amino function, have been synthesized from the corresponding metal dichlorides MCl2 and the lithium salts LiC6H4CH2NEt2-2 (1), LiC6H3(CH2NMe2)2-2,6 (2), LiC6H3(CH2NEt2)2-2,6 (3), (LiCH2CH2CH2)2NMe (4), and LiCH2CH2CH2NC5H10 (5). The crystal structures of Hg(C6H4CH2NEt2-2)2 (1c), [M(CH2CH2CH2)2NMe]2 [M = Zn (4a), Hg (4c)], and of M(CH2CH2CH2NC5H10)2 [M = Zn (5a), Cd (5b)] have been determined by X-ray diffraction. 4a and 4c form dimers with an unusual coordination number (three) of the central metal.
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  • 6
    Electronic Resource
    Electronic Resource
    Metallorganische Verbindungen der Lanthanoide. 113. [(tert-Butylcyclopentadienyl)(cyclopentadienyl)dimethylsilan]-Komplexe ausgewählter LanthanoideProfessor Rudolf Taube zum 65. Geburtstag gewidmet (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1865-1870 
    Details
    ISSN: 0044-2313
    Keywords: Cyclopentadienyl lanthanide complexes ; chiral metallocene complexes ; yttrium compounds ; neodymium compounds ; samarium compounds ; lutetium compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometallic Compounds of the Lanthanides. 113. [(tert-Butylcyclopentadienyl)(cyclopentadienyl)dimethylsilane] Complexes of selected LanthanidesThe reaction of [Me2Si(C5H4)(tBuC5H3)]Li2 with LnCl3 (Ln = Y, Nd, Sm, Lu) in THF results in the formation of the chiral, dimeric complexes [Me2Si(C5H4)(tBuC5H3)]Ln(μ-Cl)2Li(THF)(Et2O) [Ln = Y (1), Nd (2), Sm (3), Lu (4)]. The 1H-, 13C-NMR- and the mass spectra of the new compounds as well as the X-ray crystal structures of 2 a and 3 a were discussed.
    Notes: Die Reaktion von [Me2Si(C5H4)(tBuC5H3)]Li2 mit LnCl3 (Ln = Y, Nd, Sm, Lu) in THF führt zu den chiralen, dimeren Komplexen [Me2Si(C5H4)(tBuC5H3)]Ln(μ-Cl)2Li-(THF)(Et2O) [Ln = Y (1), Nd (2), Sm (3), Lu (4)]. Die 1H-, 13C-NMR- und Massenspektren der neuen Verbindungen sowie die Röntgenstrukturanalysen von 2 a und 3 a werden diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966221110
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  • 7
    Electronic Resource
    Electronic Resource
    Metallorganische Verbindungen der Lanthanoide. 88. Monomere Lanthanoid(III)-amide: Synthese und Röntgenstrukturanalyse von [Nd{N(C6H5)(SiMe3)}3(THF)], [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2,6)(SiMe3)}2(THF)] und [ClNd{N(C6H3-iso-Pr2-2,6)(SiMe3)}2(THF)] (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 122-130 
    Details
    ISSN: 0044-2313
    Keywords: Lanthanide(III)amides ; (Trimethylsilylamido)lanthanide(III) complexes ; X-ray structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometallic Compounds of the Lanthanides. 88. Monomeric Lanthanide(III) Amides: Synthesis and X-Ray Crystal Structure of [Nd{N(C6H5)(SiMe3)}3(THF)], [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2,6)(SiMe3)}2(THF)], and [ClNd{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)]A series of lanthanide(III) amides [Ln{N(C6H5) · (SiMe3)}3(THF)x] [Ln = Y (1), La (2), Nd (3), Sm (4), Eu (5), Tb (6), Er (8), Yb (9), Lu (10)] could be prepared by the reaction of lanthanide trichlorides, LnCl3, with LiN(C6H5)(SiMe3). Treatment of NdCl3(THF)2 and LuCl3(THF)3 with the lithium salts of the bulky amides [N(C6H3R2-2,6)(SiMe3)]- (R = Me, iso-Pr) results in the formation of the lanthanide diamides [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2, 6)(SiMe3)}2(THF)] (11) and [ClLn{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)] [Ln = Nd (12), Lu (13)], respectively. The 1H- and 13C-NMR and mass spectra of the new compounds as well as the X-ray crystal structures of the neodymium derivatives 3, 11 and 12 are discussed.
    Notes: Eine Reihe von Lanthanoid(III)-amiden [Ln{N(C6H5)(SiMe3)}3(THF)x] [Ln = Y (1), La (2), Nd (3), Sm (4), Eu (5), Tb (6), Er (8), Yb (9), Lu (10)] wurde durch Reaktion der entsprechenden Lanthanoidtrichloride, LnCl3, mit LiN(C6H5)(SiMe3) erhalten. Die Umsetzung von NdCl3(THF)2 und LuCl3(THF)3 mit den Lithiumsalzen der sterisch anspruchsvollen Amide [N(C6H3R2-2,6)(SiMe3)]- (R = Me, iso-Pr) führt zur Bildung der Lanthanoiddiamide [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2, 6)(SiMe3)}2(THF)] (11) und [ClLn{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)] [Ln = Nd (12), Lu (13)]. Die neuen Verbindungen wurden durch 1H- und 13C-NMR- und Massenspektren, die Neodymderivate 3, 11 und 12 durch Röntgenstrukturanalysen charakterisiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210123
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  • 8
    Electronic Resource
    Electronic Resource
    Dimethyl(tetramethylcyclopentadienyl)silyl-, -germyl- und -stannyl-phosphane. Röntgenstrukturanalyse von Chloro(dimethyl)tetramethylcyclopentadienylstannan und Tetracarbonyl[1-dimethyl-(tetramethylcyclopentadienyl)germyl-3,4-dimethylphospholen]eisen(0)Professor Markus Wieber zum 60. Geburtstag gewidmet (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1487-1494 
    Details
    ISSN: 0044-2313
    Keywords: Silicon ; germanium ; tin compounds, phosphanes ; tetramethylcyclopentadienyl ; carbonyl complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dimethyl(tetramethylcyclopentadienyl)silyl-, -germyl-, and -stannylphosphanes. X-Ray Structures of Chloro(dimethyl)tetramethylcyclopentadienyl-stannane and Tetracarbonyl[1-dimethyl(tetramethylcyclopentadienyl)germyl-3,4-dimethyl-phospholene]iron(0)Me2Cp′SiCl (1) (Cp′ = C5HMe4) reacts with magnesium and R2PCl (R = Ph, tBu) as well as PCl3 in tetrahydrofurane yielding Me2Cp′SiPPh2 (4), Me2Cp′SiPtBu2 (5) and (Me2Cp′Si)3P (6) respectively. The reaction of Me3SiPPh2 (7) or Me3SiPC4H4Me2 (10) with Me2Cp′GeCl (2) and Me2Cp′SnCl (3) leads to the formation of Me2Cp′EPPh2 (E = Ge (8), Sn (9)) and Me2Cp′EPC4H4Me2 (E = Ge (11), Sn (12)). 11 reacts with Fe(CO)5 with formation of Fe(CO)4[(PC4H4Me2)GeCp′Me2] (13). 3 crystallizes in the space group P21/n with a = 986,7(1), b = 1247,3(2), c = 1028,2(1) pm, β = 92,71(1)°, Z = 4 and V = 1264,1(2) 10-30 m3. The final refinement resulted in R1 = 0,0249 for 2097 observed reflexions with Fo ≥ 4σ(Fo). 13 crystallizes in the space group P21/n with a = 967,7(3), b = 1298,70(16), c = 1832,7(3) pm, β = 95,810(19)°, Z = 4 and V = 2291,4(8) 10-30 m3 (R1 = 0,0444 for 4043 observed reflexions with Fo ≥ 4σ(Fo). 13 forms a trigonal bipyramide with the phosphane ligand 11 in an axial position.
    Notes: Me2Cp′SiCl (1) (Cp′ = C5HMe4) reagiert mit Magnesium und R2PCl (R = Ph, tBu) bzw, PCl3 in Tetrahydrofuran unter Bildung von Me2Cp′SiPPh2 (4) und Me2Cp′SiPtBu2 (5) bzw. (Me2Cp′Si)3P (6). Durch Umsetzung von Me3SiPPh2 (7) oder Me3SiPC4H4Me2 (10) mit Me2Cp′GeCl (2) und Me2Cp′SnCl (3) wurden Me2Cp′EPPh2 (E = Ge (8), Sn (9)) bzw. Me2Cp′EPC4H4Me2 (E = Ge (11), Sn (12)) erhalten. 11 reagiert mit Fe(CO)5 unter Bildung von Fe(CO)4[(PC4H4Me2)GeCp′Me2] (13). 3 kristallisiert in der Raumgruppe P21/n mit a = 986,7(1), b = 1247,3(2), c = 1028,2(1) pm, β = 92,71(1)°, Z = 4 und V = 1264,1(2) 10-30 m3 (R1 = 0,0249 für 2097 beobachtete Reflexe mit Fo ≥ 4σ(Fo). 13 kristallisiert in der Raumgruppe P21/n mit a = 967,7(3), b = 1298,70(16), c = 1832,7(3) pm, β = 95,810(19)°, Z = 4 und V = 2291,4(8) 10-30 m3 (R1 = 0,0444 für 4043 beobachtete Reflexe mit Fo ≤ 4σ(Fo). 13 ist trigonal bipyramidal mit dem Phosphanliganden 11 in axialer Position.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220909
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  • 9
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    Electronic Resource
    Metallorganische Verbindungen der Lanthanoide. 93 [1]. Tetramethylcyclopentadienyl-Komplexe ausgewählter 4f-ElementeProfessor Karl-Heinz Thiele zum 65. Geburtstag gewidmet (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 341-345 
    Details
    ISSN: 0044-2313
    Keywords: Tetramethylcyclopentadienyl lanthanide complexes ; X-ray structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometallic Compounds of the Lanthanides. 93. Tetramethylcyclopentadienyl Complexes of Selected 4f-ElementsThe trichlorides of lanthanum, neodymium, samarium, and terbium react with Na(C5Me4H) in THF to yield the homoleptic complexes Ln(C5Me4H)3 [Ln = La (1a), Nd (1b), Sm (1c), Tb (1d)]. On the other hand the reactions of HoCl3, TmCl3, and LuCl3 with Na(C5Me4H) result only with formation of the dicyclopentadienyl complexes (C5Me4H)2LnCl(THF) [Ln = Ho (2e), Tm (2f), Lu (2h)]. The metallocenes (C5Me4H)2Ln(THF)2 [Ln = Sm (3c), Yb (3g)] are obtained by the reactions of LnI2 (Ln = Sm, Yb) with Na(C5Me4H). The 1H- and 13C-NMR spectra as well as the X-ray crystal structure of the triscyclopentadienyl complexes 1 a and 1 c are discussed.
    Notes: Die Trichloride von Lanthan, Neodym, Samarium und Terbium reagieren mit Na(C5Me4H) in THF zu homoleptischen Verbindungen des Typs Ln(C5Me4H)3 [Ln = La (1a), Nd (1b), Sm (1c), Tb (1d)]. Dagegen führt die Reaktion von HoCl3, TmCl3 und LuCl3 mit Na(C5Me4H) nur zu den Dicyclopentadienyl-Komplexen (C5Me4H)2LnCl(THF) [Ln = Ho (2e), Tm (2f), Lu (2h)]. Die Metallocene (C5Me4H)2Ln(THF)2 [Ln = Sm (3c), Yb (3g)] sind durch Umsetzung von LnI2 (Ln = Sm, Yb) mit Na(C5Me4H) erhältlich. Die neuen Verbindungen wurden durch 1H- und 13C-NMR-Spektren, die Tricyclopentadienylderivate 1 a und 1 c durch Röntgenstrukturanalysen charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210302
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