136. M. Eilers, S. Bültena, K. Schwitalla, M. Schmidtmann, R. Beckhaus
Synthesis, Characterization and Functionalization of Titanium k1N Amidinato Complexes from Carbodiimides
Dalton Transactions, 2024, DOI: 10.1039/D4DT03261F

135.  K. Schwitalla, M. Claußen, M. Schmidtmann, R. Beckhaus
Syntheses and Coordination Chemistry of Thiosemicarbazone based Titanium Complexes
New J. Chem., 2024, 48, 18066-18074.

134.  K. Schwitalla, Z. Yusufzadeh, M.Schmidtmann, R. Beckhaus
From Coordination to Non-Coordination: Syntheses and Substitution Lability Studies of Titanium Triflato Complexes
Inorganic Chemistry, 2024, 63, 14392-14401.

133.  K. Schwitalla,  J. Klimek, T. Greven, M. Schmidtmann, R. Beckhaus
Syntheses, Characterization and Redox Activity of Ferrocene-Containing Titanium complexes 
ACS Omega 2024, 9, 26, 29017-2924.

132.  K. Schwitalla, F. Sad, M. Schmidtmann, R. Beckhaus
Syntheses, Characterization and Multifaceted Coordination of Chemistry Hydrazonido Titanium Complexes
Inorganic Chemistry 2024, 63, 6, 3165-3172.

121. S. de Graaff, M. Eilers, J. Buschermöhle, N. Bengen, M. Manßen, A. Dierks, M. Schmidtmann, R. Beckhaus
Niobium Bis- and Mono(Pentafulvene) Complexes: E–H Bond Cleavage and Insertion Reactions (E = C, N, O)
European Journal of Inorganic Chemistry 2022, e202200637, (https://doi.org/10.1002/ejic.202200637)

120. K. Fitschen, N. Frerichs, Z. Yusufzadeh, R. Kurt, M. Schmidtmann, R. Beckhaus         
Crystal structures of the Lewis Acid-Base Adducts: {[(C₆H₁₁)₂N]₃Ti-LB}⁺[MeB(C₆F₅)₃]^- x 1.5 C₇H₈ LB: (C₆H₅)₃PO (1), p-F-C₆H₄CN (2)
Acta Crystallographica Section E-Crystallographic Communications 2022,  E78, 912-915.

119. S. de Graaff, K.  Schwitalla, C. V. Haaker, N. Bengen, M. Schmidtmann, R. Beckhaus        
A Niobium Pentafulvene Ethylene Complex: Synthesis, Properties and Reaction Pathways 
Dalton Transactions, 2022,51, 12502-12511.

118. M. Fischer,  M. M. D. Roy, S. Hüller, M. Schmidtmann, R. Beckhaus
Reaction of a bis(pentafulvene)titanium complex with an N heterocyclic olefin: C-H-Activation leads to resonance between a Titanium Vinyl and Titanium Alkylidene Complex
Dalton Transactions, 2022, 51, 10690-10969.        
Themed issue: New Talent: Europe

117.  S. de Graaff, A. Chandi, M. Schmidtmann, R. Beckhaus
Cooperative Reactions of Pentafulvene Niobium Complexes – Formation of Alkylidene, Imido, Hydrazido and Niobaaziridine Complexes Organometallics, 2021, 40, 19, 3298–3305.

116. M. Fischer, M. Manßen, M. Schmidtmann, T. Klüner, R. Beckhaus
Selective Propargylic C(sp³)–H Activation of Methyl-Substituted Alkyne
Chemical Science 2021, 12, 13711-13718.

115. T. Kaper, M. Fischer, H. Thye, D. Geik, M. Schmidtmann, R. Beckhaus, S. Doye
Intermolecular Hydroaminoalkylation of Alkynes
Chem. Eur. J. 2021, 27, 6899-6903.

114.  S. Ossinger, C. Näther, A. Buchholz, M. Schmidtmann, S. Mangelsen, R. Beckhaus, W. Plass, F. Tuczek
Spin Transition of an Iron(II) Organoborate Complex in Different Polymorphs and in Vacuum-Deposited Thin Films: Influence of Cooperativity
Inorganic Chemistry, 59 (2020) 7966-7979.

113. N. Frerichs, M. Schmidtmann, R. Beckhaus
Tetrakis(dicyclohexylamido)zirconium(IV)
IUCrData 2020. 5, x201145

112. T. Kaper, M. Fischer, M. Warsitz, R. Zimmering, R. Beckhaus, S. Doye,
Intermolecular Hydroaminoalkylation of Propadiene
Chem. Eur. J. 2020, 26, 14300-14304.

111. N. Frerichs, L. Lukas, M. Schmidtmann, R. Beckhaus
Tris(dicyclohexylamido) Group 4 Metal Allyl and Phenylacetylid Complexes – Synthesis and Characterization 
Eur. J. Inorg. Chem. 2020, 45, 4247-4253.

110. A. Markovic, L. Gerhards, P. Sander, C. Dosche, T. Klüner, R. Beckhaus, G. Wittstock
Electronic transitions in different redox states of trinuclear 5,6,11,12,17,18-hexaazatrinaphthylene-bridged titanium complexes: Spectroelectrochemistry and quantum chemistry
ChemPhysChem 2020, 21, 2506-2514.

109. M. Fischer, M. Wolff, E. del Horno, M. Schmidtmann, R. Beckhaus
Synthesis, Reactivity and Lewis Acidity of Mononuclear Titanocene Imido Complexes Bearing Sterical Demanding Terphenyl Moieties
Organometallics 2020, 39, 3232-3239.

108. M. Fischer, L. Vincent-Heldt, M. Hillje, M. Schmidtmann, R. Beckhaus
Synthesis of a Titanium Ethylene Complex via C–H-Activation and Alternative Access to Cp₂Ti(η²-Me₃SiC₂SiMe₃)
Dalton Transactions, 2020, 49, 2068-2072.

107.  M. Rosien, I. Töben, M. Schmidtmann, R. Beckhaus, S. Doye,
Titanium-Catalyzed Hydroaminoalkylation of Ethylene
Chemistry - A European Journal 2020,  26, 2138-2142.

106. Malte Fischer, Kerstin Fitschen, Marc Schmidtmann and Rüdiger Beckhaus
Reactivity Studies on a Bis(p-h5:s-h1-benzofulvene)titanium Complex Incorporating Simultaneous N–H and C(sp2)–H Activation of Dibenzylamine
Organometallics 2019, 38, 3760 - 3767.

105. M. Fischer, D. Barbul, M. Schmidtmann and R. Beckhaus
Unexpected selective methyl group abstraction from the SiMe₃ moieties of CH₂SiMe₃ ligands to give novel cationic titanium complexes
Chemistry - A European Journal 2019, 25, 7119 - 7130.
 

104. M. Fischer, M. Schmidtmann and R. Beckhaus
To Coordinate or not to Coordinate: The Special Role of Chalcogen Ether Functionalities in the Design of Twofold Functionalized Cyclopentadienyl Ligands [Cp,O,Ch (Ch = S, Se)]
Z. Anorg. Allg. Chem. 2019, 645, 595 - 604.

103. T. Oswald, M. Fischer, N. Struckmann, M. Schmidtmann und R. Beckhaus
Reaction of Pentafulvene Titanium and Zirconium Complexes with Phosphorus Ylides: Stoichiometric Reactions and Catalytic Intramolecular Proton Shuttles
Organometallics 2019, 38, 829 - 843.

102.  M. Fischer, K. Schwitalla, S. Baues, M. Schmidtmann and R. Beckhaus:
Frustrated Lewis Pair Behavior of Cationic Titanium Complexes with Tridentate Cp,O,N-Ligands: Highly Efficient Syntheses and Activation Reactions of C–X Bonds (X = H, F, Cl)
Dalton Transactions 2019, 48, 1516 - 1523.

101.  M. Fischer, H. Steinert, M. Schmidtmann and R. Beckhaus,
Teaching c Phosphanylimines the Titanaaziridine Coordination Mode
Dalton Transactions 2019, 48, 1936 - 1940.

65. M. Manßen, N. Lauterbach, J. Dörfler, M. Schmidtmann, W. Saak, S. Doye, R. Beckhaus
Effizienter Zugang zu Titanaaziridinen durch C-H Aktivierung von N-Methylanilinen / Efficient Access to Titanaaziridines via C-H Activitation of N-Methylanilines at Ambient Temperature
Angew. Chem., 127, 2015, (14), 4458 - 4462; Angew. Chem. Int. Ed., 54, 2015, (14), 4383 - 4387.

64. C. Wolff, A. Gottschlich, J. England, K. Wieghardt, W. Saak, D. Haase, R. Beckhaus
Molecular and Electronic Structures of Organometallic Mono- and Dinuclear Titanium Complexes Containing π-Radical Anions of 2,2'-bipyridine and 1,10-phenanthroline. An Experimental and DFT Computational Study
Inorg. Chem., 64, 2015, (10), 4811 - 4820.

63. F. Loose, M.Schmidtmann, W. Saak R. Beckhaus
Imines in the titanium coordination sphere - Highly reactive titanaaziridines and larger titanacycles formed by subsequent C-C coupling reactions
Eur. J. Inorg. Chem., 2015, 5171 - 5187.

62. O. N. Frey, T. Stalling, F. Schlüter, W. Saak, M. Schmidtmann, D. Haase, R. Beckhaus Remarkably Stability of Tetrabenzo[a,c,g,i]fluorenyl Ammonium Salts in Water: Syntheses, Reactions, and Crystal Structures
Dalton Trans., 2015, 1085 - 1092.

61. F. Loose, I. Plettenberg, D. Haase, W. Saak, M. Schmidtmann, A. Schäfer, T. Müller, R. Beckhaus
Aromatic Imines in the Titanocene Coordination Sphere—Titanaaziridine vs 1-Aza-2-titanacyclopent-4-ene Structures
Organometallics 2014, 33, 6785 - 6795.

60. C. Adler, G. Tomaschun, M. Schmidtmann, R. Beckhaus
Remarkably Robust Mono-n-butyl Group IV Dicyclohexylamido Complexes {(Cy)₂N}₃M(n-butyl) (Cy: cyclohexyl [C₆H₁₁], M: Ti, Zr)
Organometallics 2014, 33, 7011 - 7014.

59. H. Ebert, V. Timmermann, T. Oswald, W. Saak, M. Schmidtmann, M. Friedemann, D. Haase, R. Beckhaus
Synthesis and Reactivity of Bis(η⁵:η¹-pentafulvene)zirconium Complexes
Organometallics, 2014, 33, 1440 - 1452.

58. C. Adler, A. Bekurdts, D. Haase, W. Saak, M. Schmidtmann, R. Beckhaus
Bulky Titanium Amides: C–H Bond Activation under Mild Conditions
Eur. J. Inorg. Chem. 2014, 1289 - 1302; Eur. J. Inorg. Chem. 2014, 8, 1262.

57. C. Maibohm. M. Rastedt, F. Kutscher, O. N. Frey, R. Beckhaus, K. Al-Shamery und H.-G. Rubahn
Optical waveguiding and temperature dependent photoluminescence of nanotubulars grown from molecular building blocks
Chem. Phys. Lett. 590, 2013, 98 - 91.

56. J. Luo, J. Hu, W. Saak, R. Beckhaus, G. Wittstock, I. F. J. Vankelecom, C. Agert und O. Conrad
Protic ionic liquid and ionic melts prepared from methanesulfonic acid and 1H-1,2,4-triazole as high temperature PEMFC electrolytes
J. Mater. Chem. 21, 2011, 10426 - 10436.

55. T. Janssen, R. Severin, M. Diekmann, M. Friedemann, D. Haase, W. Saak, S. Doye und R. Beckhaus
Bis(h5:h1-pentafulvene)titanium Complexes: Catalysts for Intramolecular Alkene Hydroamination and Reagents for Selective Reactions with N-H-acidic Substrates
Organometallics 29, 2010, Nr. 7 1806 - 1817.

54. M. Jordan, W. Saak, D. Haase und R. Beckhaus
Bridging Azines in the Coordination Sphere of Low Valent Vanadocene Derivatives
Organometallics 29, 2010, Nr. 22 5859 - 5870.

53. L. Scheffel, R. Beckhaus und I. Parchmann
Welche Inhalte gehören zum schulischen Basiskonzept Struktur-Eigenschaftsbeziehungen?
Naturwissenschaften im Unterricht Chemie, 2010, 1 - 8.

52. A. Scherer, D. Haase, W. Saak, R. Beckhaus, A. Meetsma und M. W. Bouwkamp
Low-valent Pentafulvene Titanium Dinitrogen Complexes as a Precursor for Cationic Titanium Complexes
Organometallics 28, 2009, Nr. 24 6969 - 6974.

51. O. Theilmann, W. Saak, D. Haase und R. Beckhaus
Reactions of Low Valent Titanocene(II) Fragments with trans-4,4`-Azobispyridine (RN=NR, R: C₅H₄N): Formation of Tetranuclear Molecular Squares by trans-cis Isomerization
Organometallics 28, 2009, 2799 - 2807.

50. T. Jung, R. Beckhaus, T. Klüner, S. Höfener und W. Klopper
Unexpected Trimerization of Pyrazine in the Coordination Sphere of Low-Valent Titanocene Fragments
Journal of Chemical Theory and Computation 5, 2009, Nr. 8 2044 - 2049.

49. I. Prochnow, R. Kubiak, O. N. Frey, R. Beckhaus und S. Doye
Tetrabenzyltitanium: An Improved Catalyst for the Activation of sp3 C H Bonds Adjacent to Nitrogen Atoms
ChemCatChem 1, 2009; 162 - 172.

48. J. Krahmer, R. Beckhaus, W. Saak, D. Haase
Chelating Complexes of Diethylzinc and ZnCl₂ with 2,2-Bipyridine and 1,6,7,12,13,18-Hexaazatrinaphthylene (HATN) as Ligands
Z. Anorg. Allgem. Chem., 2008, 634 (10), 1696 - 1702.

47. K. Schröder, D. Haase, W. Saak, W. P. Kretschmer, A. Lützen, R. Beckhaus
Tetrabenzo[a,c,g,i]titanium(III) and -(IV) Complexes: Syntheses, Reactions and Catalytic Application
Organometallics, 2008, 27 (8), 1859 - 1868.

46. M. Jordan, W. Saak, D. Haase, R. Beckhaus
Ring Slipped (2,2´-bipyridine)(η³-cyclopentadienyl)(η⁵-cyclopentadienyl)vanadium(II) and Its Oxidation to (2,2´-bipyridine)bis(η⁵-cyclopentadienyl)vanadium(III) Tetraphenylborate
Eur. J. Inorg. Chem., 2007, 33, 5168 - 5172.

45. I. Piglosiewicz, R. Beckhaus, G. Wittstock, W. Saak, D. Haase
Selective Oxidation and Reduction of Trinuclear Titanium(II) Hexaazatrinaphthylene Complexes - Synthesis, Structure and Electrochemical Investigations
Inorg. Chem., 2007, 46 (18), 7610 - 7620. 

44. R. Koch, E. Bölter, J. Stroot, R. Beckhaus
Theoretical Studies on Titanium Pentafulvene Complexes
J. Organomet. Chem., 2006, 691, 4539 - 4544. 

43. K. Schröder, D. Haase, W. Saak, A. Lützen, R. Beckhaus
Tetrabenzo[a,c,g,i]fluorenyllithium and η⁵-Tetrabenzo[a,c,g,i]fluorenyltitanium Complexes
Organometallics, 2006, 25 (16), 3824 - 3836.

42. M. Diekmann, G. Bockstiegel, A. Lützen, M. Friedemann, D. Haase, W. Saak, R. Beckhaus, D. Haase, W. Saak
Chiral Bis(η⁵,η¹-Pentafulvene) Titanium Complexes
Organometallics, 2006, 25 (2), 339 - 348. 

41. F. Studt, N. Lehnert, B. E. Wiesler, A. Scherer, R. Beckhaus, F. Tuczek
Spectroscopic Comparison of Dinuclear Ti⁺ and Ti²⁺ μ-η¹:η¹ Dinitrogen Complexes with Cp*/Pentafulvene and Amine/Amide Ligation: Moderate versus High Activation of N₂
Eur. J. Inorg. Chem., 2006, 2, 291 - 297. 

40. I. M. Piglosiewicz, R. Beckhaus, D. Haase, W. Saak
Dehydroaromatization of Quinoxalines: One-Step Syntheses of Trinuclear 1,6,7,12,13,18-Hexaazatrinaphthylene Titanium Complexes
J. Am. Chem. Soc., 2005, 127(41), 14190 - 14191. 

39. A. Scherer, K. Kollak, A. Luetzen, M. Friedemann, D. Haase, W. Saak, R. Beckhaus
Low-Valent Titanium-Pentafulvene Complexes - Formation of Dinuclear Titanium-Nitrogen Complexes
Eur. J. Inorg. Chem., 2005, 6, 1003 - 1010.

38. I. M. Piglosiewicz, S. Kraft, R. Beckhaus, D. Haase, W. Saak
Selective C-H and C-F Bond Activation Reactions of Pyridine and Fluoropyridines - Formation of Binuclear μ-X Titanocene Complexes (X = H, F) with α-Functionalized N-Heterocycles
Eur. J. Inorg. Chem., 2005, 5, 938 - 945.

37. S. Kraft, E. Hanuschek, R. Beckhaus, D. Haase, W. Saak
Titanium-Based Molecular Squares and Rectangles: Syntheses by Self-Assembly Reactions of Titanocene Fragments and Aromatic N-Heterocycles
Chem. Eur. J., 2005, 3, 969 - 978.

36. S. Kraft, R. Beckhaus, D. Haase, W. Saak
Directed Reduction of Six-Membered Nitrogen Heterocycles - Selective Formation of Polynuclear Titanium Complexes
Angew. Chem., 2004, 116, 1609 - 1614; Angew. Chem. Int. Ed., 2004, 12, 1583 - 1587. 

35. J. Stroot, A. Lützen, M. Friedemann, W. Saak, R. Beckhaus
Pentafulvene Complexes of Titanium - Synthesis, Structure, and Fluxional Behavior of Cp´Ti{η⁶ -C₅H₄=C(p-Tol)₂}Cl (Cp´ = Cp*, Cp)
Z. anorg. allg. Chem., 2002, 628, 797 - 802.

34. J. Stroot, D. Haase, W. Saak, R. Beckhaus
Reactions of Pentafulvene Complexes of Titanium with Nitriles and Iso-Nitriles - Synthesis and Isomerizations of σ, π-Chelate Complexes with Cp ~ N-Ligands
Z. anorg. allg. Chem., 2002, 628, 755 - 761.

33. J. Stroot, D. Haase, W. Saak, R. Beckhaus
Crystal Structure of (η⁵ -Pentamethylcyclopentadienyl)(η⁵ -1-(2,2-dimethylpropyl) cyclopentadienyl)titaniumdichloride, C₂₀H₃₀Cl₂Ti
Z. Kristallogr. NCS, 2002, 217, 49 - 50.

32. J. Stroot, D. Haase, W. Saak, R. Beckhaus
Crystal Structure of (η⁵ -Pentamethylcyclopentadienyl)(η⁵ -1-(2,2-dimethylpropyl) cyclopentadienyl)(hydroxy)-titaniumchloride C₂₀H₃₁ClOTi
Z. Kristallogr. NCS, 2002, 217, 47 - 48.

31. C. Santamaria, R. Beckhaus, D. Haase, R. Koch, W. Saak, I. Strauss
Reactions of the Titanaallene Intermediate [Cp*₂Ti=C=CH₂] with Isonitriles: An Approach to the Chemistry of Radialene Type Molecules
Organometallics, 2001, 7, 1354 - 1359.

30. R. Beckhaus, C. Santamaria
Carbene Complexes of Titanium Group Metals - Formation and Reactivity
J. Organomet. Chem., 2001, 617 - 618, 81 - 97.

29. R. Beckhaus
Reaktivitätsprinzipien von Metallocenderivaten früher Übergangmetalle
Nachrichten aus Chemie, Technik und Laboratorium , 1998, 46, 611 - 623.

28. N. Peulecke,  V. V. Burlakov, B. Heller, W. Baumann, A. Spannenberg, R. Kempe, U. Rosenthal, R. Beckhaus
Terminal Alkynes in the Coordination Sphere of Titanocene Complexes - Elementary Steps in Catalytic Dimerizations and Oligomerizations of Alkynes
Z. anorg. allg. Chem. 1998, 624, 129 - 134.

27. D. Thomas, N. Peulecke,  V. V. Burlakov, B. Heller, W. Baumann, A. Spannenberg, R. Kempe, U. Rosenthal, R. Beckhaus
Katalysatordesaktivierungen in der Acetylen-Polymerisation mit Titanocen- und Zirconocen-Komplexen des Bis(trimethylsily) acetylens
Z. anorg. allg. Chem. 1998, 624, 919 - 924.

26. R. Beckhaus, J. Oster, R. Wang, U. Böhme
Synthesis of Semibridging m-Vinylidene Titanium-Copper and -Gold Complexes. Crystal and Molecular Structure of Cp*₂Ti(Cl)(μ-C=CH₂)AuPPh₃
Organometallics, 1998, 17, 2215 - 2221. 

25. R. Beckhaus, M. Wagner, R. Wang
Darstellung und Kristallstruktur des Azavinylidenderivates Cp*₂Ti(CH=CH₂)(N=CPh₂) ausgehend vom thermisch gebildeten Titanaallenintermediate[Cp*₂Ti=C=CH₂]
Z. anorg. allg. Chem., 1998, 624, 277 - 280.

24. R. Beckhaus, M. Wagner, U. Rosenthal, R. Kempe, A. Spannenberg, W. Baumann
Terminal Alkynes in the Coordination Sphere of Titanocene Complexes - Elementary Steps in Catalytic Dimerizations and Oligomerizations of Alkynes
Z. anorg. allg. Chem., 1998, 624, 129 - 134.

23. R. Beckhaus, M. Wagner, R. Wang
Synthesis and Structural Characterization of Azatitanacyclobutane Derivatives
Eur. J. Inorg. Chem. 1998, 253 - 256. 

22. R. Beckhaus, J. Oster, B. Ganter, U. Englert
Vinyltitanium Complexes Containing the [2-(N,N-Dimethyl-amino)ethyl]tetramethylcyclopentadienyl Ligand Cp*N - Generation and Reactivity of the Vinylidene Intermediate, [(Cp*N)(Cp*)Ti=C=CH₂] (Cp*N = η⁵-C₅Me₄(CH₂)₂NMe₂, Cp* = η⁵-C₅Me₅)
Organometallics, 1997, 16, 3902 - 3909.

21. R. Beckhaus, J. Sang, T. Wagner, U. Böhme
Regioselective Reactions of Isothiocyanates with the Titanocene Vinylidene Fragment [Ti(=C=CH₂)(η-C₅Me₅)₂]. Crystal and Molecular Structure of [Ti{SC(=N(C₆H₁₁)C=CH₂}(η-C₅Me₅)₂]
J. Chem. Soc. Dalton Trans., 1997, 2249 - 2256. 

20. R. Beckhaus
C₂ Building Blocks in the Coordination Sphere of Electron Poor Transition Metals. Aspects of the Chemistry of Early-Transition-Metal Carbenoide Complexes
J. Chem. Soc. Dalton Trans., 1997, 1991 - 2002. 

19. R. Beckhaus, I. Strauß, T. Wagner
Darstellung und Kristallstrukturanalyse von Bis(p-pentamethylcyclopentadienyl)(2-methylen)- (3-diphenylmethylen)oxatitanacyclobutan Cp*₂TiOC(=CPh₂)CC=CH₂
Z. anorg. allg. Chem. 1997, 623, 654 - 658. 

18. R. Beckhaus
Carbenoide Komplexverbindungen elektronenarmer Übergangsmetalle - Synthesen von und mit kurzlebigen Synthesebausteinen
Angew. Chem. 1997, 109, 694 - 722; Angew. Chem., Int. Ed. Engl. 1997, 36, 686 - 713.

17. R. Beckhaus, J. Oster, J. Sang, I. Strauß, M. Wagner
The Story of 1-Alkenyl Complexes of Early Transition Metals - A Low Temperature Access to the Versatile Titana-Allene Building Block [Cp*₂Ti=C=CH₂]
Synlett 1997, 3, 241 - 249. 

16. R. Beckhaus, J. Sang, U. Englert, U. Böhme
Regioselective Reactions of 1,3-Diynes with the Titanocene Vinylidene Fragment [Cp*₂Ti=C=CH₂]. Crystal and Molecular Structure of Cp*₂TiC(CCSiMe₃)=C(SiMe₃)C=CH₂
Organometallics 1996, 15, 4731 - 4736. 

15. R. Beckhaus, J. Oster, R. Kempe, A. Spannenberg
Intermolekulare Carben-Carben-Kopplung eines nucleophilen Vinyliden- mit einem elektrophilen 1-Methoxyethyliden-Liganden
Angew. Chem. 1996, 108, 1636 - 1638; Angew. Chem., Int. Ed. Engl. 1996, 35, 1565 - 1567.

14. R. Beckhaus, J. Sang, T. Wagner, B. Ganter
Reactivity of Acetylenes Toward the Titanocene Vinylidene Fragment [Cp*₂Ti=C=CH₂]. Formation of Methylenetitanacyclobutenes and Vinyltitanium Acetylides. Crystal and Molecular Structures of Cp*₂TiCR"=CR""C=CH₂ (R" = R""= CH₃; R" = SiMe₃, R"" = C₆H₅) and Cp*₂Ti(CH=CH₂)(CCPh)
Organometallics 1996, 15, 1176 - 1187. 

13. R. Beckhaus, J. Oster, R. Loo
a-H-Übertragungen an Vinylmetallverbindungen - Darstellung von (h⁵-Cyclopentadienyl(h⁵-pentamethylcyclopentadienyl)- (2-methyliden)titanacyclobutan
J. Organometal. Chem. 1995, 501, 321 - 326.

12. R. Beckhaus, I. Strauß, T. Wagner,
Synthese und Struktur von 1-Aza- und 1-Phospha-2-titanacyclobut-4-enen
Angew. Chem. 1995, 107, 738 - 740; Angew. Chem., Int. Ed. Engl. 1995, 34, 688 - 690.

11. R. Beckhaus, J. Oster
Zur Reaktivität isomerer heterodinuclearer Fischer-Carben Komplexe mit Titanaoxetan- und Titanaoxolenteilstrukturen - Cycloreversions- und Insertionsreaktionen
Z. anorg. allg. Chem. 1995, 621, 359 - 364. 

10. R. Beckhaus, J. Sang, J. Oster, T. Wagner
Zum Reaktionsverhalten eines Vinylidentitanocen-Intermediates gegenüber protischen Agenzien - selektive Synthesen von 1-Alkenyltitanocenverbindungen
J. Organometal. Chem. 1994, 484, 179 - 190. 

9. R. Beckhaus, I. Strauß, T. Wagner
Zum Reaktionsverhalten von Titanocenvinyliden gegenüber enolisierbaren Ketonen: Cp*₂Ti(CH=CH₂)(OC(=CH₂)C₆H₁₁) - ein Enolat mit ungewöhnlich gestrecktem Ti-O-C-Winkel
J. Organometal. Chem. 1994, 464, 155 - 161.

8. R. Beckhaus, J. Oster, T. Wagner
Cyclische isomere vier- und fünfgliedrige heterodinucleare Fischer-Carbenkomplexe - gebildet aus einem Vinylidentitanocen-Fragment und Metallcarbonylen
Chem. Ber. 1994, 127, 1003 - 1013. 

7. R. Beckhaus, I. Strauß, T. Wagner, P. Kiprof
Überraschende Differenzierung bei der Cycloaddition von Cumulenen und Heterocumulenen an ein Vinylidentitanocen: Bildung vier- und fünfgliedriger Titanacyclen
Angew. Chem. 1993, 105, 281-283; Angew. Chem., Int. Ed. Engl. 1993, 32, 264 - 266. 

6. R. Beckhaus, T. Wagner, C. Zimmermann, E. Herdtweck
Bis(π-pentamethylcyclopentadienyl)(2-methyliden)titanacyclobutan: Selektive Insertion von Isonitrilen und Diphenylketen - Bildung fünf- und sechsgliedriger Metallacyclen
J. Organometal. Chem. 1993, 460, 181 - 189. 

5. D. Selent, R. Beckhaus, J. Pickardt
Heterodinuclear Titanium-Cobalt Complexes: Syntheses and Properties. X-ray Structure of [(tert.-C₄H₉O)₃TiCo(CO)₄] (Ti-Co)
Organometallics 1993, 12, 2857 - 2860.

4. R. Beckhaus
Methylidenetitanacyclobutane vs. Titanocene-Vinylidene - Versatile Building Blocks
Organic Synthesis via Organometallics (OSM 4), Proceedings of the Fourth Symposium in Aachen, July 15th to 18th, 1992, D. Enders, H.-J. Gais, W. Keim (Hrsg.),
Vieweg Verlag, Braunschweig 1993, 131 - 149. 

3. D. Selent, R. Beckhaus, T. Bartik
Synthese und Charakterisierung eines stabilen heterobimetallischen Titan-Cobalt Komplexes mit unverbrückter Ti-Co-Bindung
J. Organometal. Chem. 1991, 405, C15 - C18.

2. R. Beckhaus
Zur Chemie von Vinylverbindungen elektronenarmer Übergangsmetalle (Habilitation Thesis),
Fakultät für Naturwissenschaften, Technische Hochschule Leuna-Merseburg; Mathematisch-Naturwissen-schaftliche Fakultät der RWTH Aachen; 1991/1993.

1. R. Beckhaus, K.-H. Thiele, D. Ströhl
Bis(pentamethylcyclopentadienyl)metalldivinyl-Verbindungen des Titaniums, Zirconiums und Hafniums; Bildung von Titanacyclobutan- und Zirconacyclopent-2-en-Derivaten
J. Organometal. Chem. 1989, 369, 43 - 54.