Peter Jutzi's research while affiliated with Bielefeld University and other places

... Cyclopentadienylsilicon compounds have been intensively studied concerning their fluxional behavior in the context with their application as ligands or as ligand precursors in transition-metal chemistry. The regioselective Si–C bond formation allows the preparation of tailor-made Cp ligands [29]; this is demonstrated with two illustrative examples, which are depicted in Scheme 8. In Fryzuk's work, the 1,1-disilyl substituted cyclopentadiene C 5 H 4 [SiMe 2 (CH 2 PR 2 )] 2 is regioselectively transformed to the 1,3-disilyl substituted lithium cyclopentadienide, which after reaction with ZrCl 4 gives the corresponding zirconium complex [30]. ...

... However, compared with the well-established synthesis of carbon compounds, it remains challenging to synthesize such silicon-based mimics. Despite many advancements have been achieved in recent years [1][2][3][4][5][10][11][12][13][14] , direct access to the sila-isosteres by using their carbon analogs as starting materials still waits for exploration. Conventional methods for synthesis of such silicon-based mimics are typically time-consuming and inefficient, thus greatly restricting the practical application of sila-substitutions. ...

... The Si(II) half-sandwich nido-type cluster compound 4B-Ph* has been reported to be formed by the reaction of the borolediide [B-Ph*] 2− with two equivalents of Jutzi's [Cp*Si] + as effective source of Si(II) in a salt metathesis reaction also affording silicocene Cp* 2 Si as a side product (Scheme 1). [44][45][46][47][48] However, the necessity to provide [Cp*Si] + with weakly coordinating anions rendered this approach rather costly and very atom inefficient and we were interested in studying alternative approaches. However, meaningful reagents that function as suitable sources of Si(II) for metathetic approaches are very scarce and mostly limited to said [Cp*Si] + , Cp* 2 Si, 49 and Roesky's and Filippou's SiX 2 (IDipp) (X = Cl, Br, IDipp = 1,3-bis-2 ′ ,6 ′ -i Pr 2 (C 6 H 3 )-imidazole-2-ylidene). ...

... In contrast to the conventional magnetization measurements which are carried out at lower frequencies, Mössbauer spectroscopy can reveal the magnetic dynamics of nanoparti-cles at higher frequencies because the particle size is so small that the relaxation time of the magnetic moment of each particle can fall in the characteristic nuclear time window (10 −11 -10 −6 s for 57 Fe nuclei) and superparamagnetic relaxation can be the decisive factor in realizing specific shapes of the absorption spectrum [3,[5][6][7]. However, the conventional magnetization curves are widely measured as a function of both temperature and magnetic field [8][9][10][11][12][13][14][15][16], which supply one with a lot of data on the non-equilibrium magnetism of nanoparticles [4,17], while the Mössbauer spectra of fine magnetic particles are usually collected as a function of temperature only [18][19][20][21][22][23]. In rare cases, when the spectra are measured in a strong external magnetic field of several Tesla, which is comparable with the strength of the hyperfine field, H hf , at the nucleus, one can roughly estimate only the average saturation magnetization of the sample as a whole [24][25][26]. ...

... A list of selected topics published in the journal is given below with reference to representative articles.141516171819 & Biology [20] and Biotechnology [21, 22] & Space [23] & Biomaterials and Medicine24252627 & Environmental Science [28, 29] & Organic and Inorganic Chemistry303132333435 & Photonic Devices [36] and Solar Cells [37] & Surface Engineering [ ...