Concepedia

Burkhard Niemer

BN

Statistics

Publications

8

Citations

480

H-Index

8

Active since

1988

Affiliations

Ludwig-Maximilians-Universität München(Current)

Burkhard Niemer is an author at Ludwig-Maximilians-Universität München specializing in chemical engineering, inorganic chemistry, and chemistry.

Top concepts

Publications per year

1988–1993

8

Publications

8

Methods for the Synthesis of μ‐Hydrocarbon Transition Metal Complexes without Metal–Metal Bonds

Wolfgang Beck, Burkhard Niemer, Michael Wieser · Angewandte Chemie International Edition in English · 1993 · 297 citations

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New bimetallic hydrocarbon-bridged complexes by nucleophilic attack of carbonylmetallates to coordinated unsaturated hydrocarbons

Wolfgang Beck, Burkhard Niemer, Josef Bremair et al. · Journal of Organometallic Chemistry · 1989 · 38 citations

, , +8

Reaction pathways in organometallic chemical vapor deposition(OMCVD)

Alfred A. Zinn, Burkhard Niemer, Herbert D. Kaesz · Advanced Materials · 1992 · 36 citations

, , +12

Hydrocarbon‐bridged Metal Complexes, XXI. – Addition of Tetracarbonylosmate and ‐ruthenate to Coordinated Unsaturated Hydrocarbons: Trinuclear Complexes with two σ,α‐Allyl, Methylallyl, Cyclohexadiene, Cycloheptadiene, Cyclohexadienyl, Cycloheptatrien, and “Thiophene” Bridges The addition of organometallic nucleophiles [M(CO)<sub>4</sub>]<sup>2‐</sup> (M = Os, Ru) to [(Cp)(ON)(OC)Mo(allyl)]<sup>+</sup>, [Cp(OC)<sub>2</sub>Mo(butadiene)]<sup>+</sup>, [(OC)<sub>3</sub>Fe(cycloheptadienyl)]<sup>+</sup>, [(OC)<sub>3</sub>Fe(cycloheptadienyl)]<sup>+</sup>, [(OC)<sub>3</sub>Mn(benzene)]<sup>+</sup>, [(OC)<sub>3</sub>Mn(thiophene)]<sup>+</sup>, [(OC)<sub>3</sub>‐Mo(cycloheptatrienyl)]<sup>+</sup> leads to the heterotrimetallic η<sup>1</sup>:η<sup>2</sup>‐, η<sup>1</sup>:η<sup>3</sup>‐, η<sup>1</sup>:η<sup>4</sup>‐, η<sup>1</sup>:η<sup>5</sup>‐, η<sup>1</sup>:η<sup>6</sup>‐hydrocarbon‐bridged complexes 1 ‐ 7. The structures of <i>cis</i>‐(OC)<sub>4</sub>Os[(μ‐η<sup>1</sup>:η<sup>4</sup>‐C<sub>7</sub>H<sub>9</sub>)Fe(CO)<sub>3</sub>]<sub>2</sub> (4), <i>cis</i>‐(OC)<sub>4</sub>Os[(μ‐η<sup>1</sup>:<sup>5</sup>‐C<sub>6</sub>H<sub>6</sub>‐Mn(CO)<sub>3</sub>]<sub>2</sub> (6), and <i>cis</i>‐(OC)<sub>4</sub>Os‐[μ‐η<sup>1</sup>:η<sup>6</sup>‐C<sub>7</sub>H<sub>7</sub>‐Mo(CO)<sub>3</sub>]<sub>2</sub> (7b) have been determined by X‐ray analysis. The fluxional behaviour of 6 in solution has been studied in a temperature range from – 70 to +60°C. The comparison of observed and calculated <sup>1</sup>H‐NMR data indicates a 1,2‐shift mechanism (ΔG<sup>+</sup> = 49 kJ/mol).

Burkhard Niemer, Josef Breimair, Thomas Völkel et al. · Chemische Berichte · 1991 · 32 citations

Addition von Pentacarbonylrhenat an koordiniertes Benzol: Ein σ,π‐verbrückter, dynamischer Cyclohexadienyl‐Komplex, (OC)<sub>5</sub>Re‐μ‐(η<sup>1</sup>:η<sup>5</sup>‐C<sub>6</sub>H<sub>6</sub>Mn(CO)<sub>3</sub>

Burkhard Niemer, Manfred Steimann, Wolfgang Beck · Chemische Berichte · 1988 · 26 citations

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