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Marc Schmidtmann
Bielefeld University
Organic chemistryInorganic chemistryChemistryPhotochemistryLigand
202Publications
33H-index
3,853Citations
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Publications 200
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#1Michael RosienH-Index: 1
#2Iris TöbenH-Index: 2
Last. Sven DoyeH-Index: 32
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#1Sascha OssingerH-Index: 2
#2Christian NätherH-Index: 40
Last. Felix TuczekH-Index: 35
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Two polymorphic modifications (1-I and 1-II) of the new spin crossover (SCO) complex [Fe{H2B(pz)(pypz)}2] (pz = pyrazole, pypz = pyridylpyrazole; 1) were prepared and investigated by differential scanning calorimetry (DSC), magnetic measurements, Mosbauer, vibrational, and absorption spectroscopy as well as single-crystal and X-ray powder diffraction. DSC measurements reveal that upon heating the thermodynamically metastable form 1-II to ∼178 °C it transforms into 1-I in an exothermic reaction, ...
1 CitationsSource
The synthesis of the novel room temperature stable titanacyclopropane derivative Cp*Ti(η2-C2H4)(η5-C5H4AdH) (2) in a one-step-two-transformation protocol and first insights into its reactivity are presented, including the synthesis of the corresponding bis(trimethylsilyl)acetylene complex Cp*Ti(η2-Me3SiC2SiMe3)(η5-C5H4AdH) (4). Given these results, a novel one-pot procedure toward the Rosenthal’s Reagent Cp2Ti(η2-Me3SiC2SiMe3) was subsequently developed.
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#1Michael RosienH-Index: 1
#2Iris TöbenH-Index: 2
Last. Sven DoyeH-Index: 32
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The first examples of titanium-catalyzed hydroaminoalkylation reactions of ethylene with secondary amines are presented. The reactions can be achieved with various titanium catalysts and they do not require the use of high pressure equipment. In addition, the first solid-state structure of a titanapyrrolidine that is formed by insertion of an alkene into the Ti-C bond of a titanaaziridine is reported.
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#1Anna DierksH-Index: 1
#2Jan TönjesH-Index: 1
Last. Jens ChristoffersH-Index: 29
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1 CitationsSource
The improved multigram synthesis of the bis(π-η5:σ-η1-benzofulvene)titanium complex 1 is reported. On the basis of this, the follow-up chemistry of complex 1 was investigated and selective mono or double insertion reactions with ketones and nitriles into the polarized Ti–Cq,exo bond(s) were found to diastereoselectively yield complexes 2–5. Compound 1 reacts with molecular hydrogen to afford the formal H2 addition products 6a–c of the benzofulvene ligand precursor. The reactions of 1 with select...
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#1Heinz WilkesH-Index: 38
Last. Jens ChristoffersH-Index: 29
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#1Malte FischerH-Index: 4
#2Daniel BarbulH-Index: 1
Last. Ruediger BeckhausH-Index: 5
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