Peter C. Junk
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View article: [2+2]-Photocycloadditions of 2-Acetoxy-1,4-naphthoquinone and Structure Determination of the Main Photoadducts
[2+2]-Photocycloadditions of 2-Acetoxy-1,4-naphthoquinone and Structure Determination of the Main Photoadducts Open
The [2+2]-photocycloaddition of 2-acetoxy-1,4-naphthoquinone with 1,1-diphenylethylene, styrene and cyclopentene was conducted in a conventional batch reactor. Prolonged irradiation selectively produced the corresponding anti and head-to-h…
View article: Synthesis, Structures and Corrosion Inhibition Properties of 4-Nitrophenylacetato-Rare-Earth(III) 1D Coordination Polymers
Synthesis, Structures and Corrosion Inhibition Properties of 4-Nitrophenylacetato-Rare-Earth(III) 1D Coordination Polymers Open
The rare earth (RE) aqua 4-nitrophenylacetate (4npa) complexes {[RE(4npa)3(H2O)2]·2H2O}n (RE = La (1La), Nd (2Nd)), [Ce(4npa)3(H2O)2]n (3Ce), and {[RE2(4npa)6(H2O)]·2H2O}n (RE = Gd (4Gd), Dy (5Dy), Y (6Y), Er (7Er), Yb (8Yb)) were synthesi…
View article: Organometallic and coordination chemistry of the main group and rare earth elements
Organometallic and coordination chemistry of the main group and rare earth elements Open
This thesis presents a series of publications relating predominantly to the organometallic, organoamido and coordination chemistry of the main group and rare earth elements as well as some supramolecular chemistry involving crown ethers an…
View article: <i>Syn</i>- and <i>anti</i>-rotamers of the <i>ortho</i>-stereoisomer [Pt{(<i>o</i>-BrC<sub>6</sub>F<sub>4</sub>)N(CH<sub>2</sub>)<sub>2</sub>NEt<sub>2</sub>}Cl(py)]
<i>Syn</i>- and <i>anti</i>-rotamers of the <i>ortho</i>-stereoisomer [Pt{(<i>o</i>-BrC<sub>6</sub>F<sub>4</sub>)N(CH<sub>2</sub>)<sub>2</sub>NEt<sub>2</sub>}Cl(py)] Open
The crystal structure of the ortho -isomer trans -[ N -(2-bromo-3,4,5,6-tetrafluorophenyl)- N ′, N ′-diethylethane-1,2-diaminato(1−)]chloridopyridineplatinum(II), [PtBr 0.1 (C 12 H 14 BrF 4 N 2 )Cl 0.9 (C 5 H 5 N)][PtBr 0.4 (C 12 H 14 BrF …
View article: Contrasting Reactions of Carbodiimides with Divalent Lanthanoid Species
Contrasting Reactions of Carbodiimides with Divalent Lanthanoid Species Open
Reactions of lanthanoid species with carbodiimides (RN ═ C ═ NR′) show considerable variety. Thus, treatment of the divalent 2,6‐di‐ tert ‐butyl‐4‐ethylphenolatosamarium complex, [Sm(OAr Et ) 2 (thf) 3 ]·PhMe with N , N '‐diisopropylcarbod…
View article: <i>Ansa</i>-effects in alkaline earth metal octaphenylmetallocenophanes and a derived <i>ansa</i>-ferrocene
<i>Ansa</i>-effects in alkaline earth metal octaphenylmetallocenophanes and a derived <i>ansa</i>-ferrocene Open
Ethylene-bridged octaphenylmetallocenes of the alkaline earth metals (Mg to Ba) have been synthesised, revealing important effects on structure and stability compared to their non-tethered analogs.
View article: [2+2]-Photocycloadditions of 1,4-Naphthoquinone Under Batch and Continuous-Flow Conditions
[2+2]-Photocycloadditions of 1,4-Naphthoquinone Under Batch and Continuous-Flow Conditions Open
A series of [2+2]-photocycloadditions of 1,4-naphthoquinone with various alkenes and diphenylacetylene were investigated under batch and continuous-flow conditions. Acetone-sensitization furnished the corresponding photoadducts in good to …
View article: Rare‐Earth 4‐Hydroxyphenylacetate Complexes: Synthesis, Structural Characterization, and Corrosion Inhibition Properties
Rare‐Earth 4‐Hydroxyphenylacetate Complexes: Synthesis, Structural Characterization, and Corrosion Inhibition Properties Open
Four structural types of rare‐earth aqua 4‐hydroxyphenylacetate complexes {[Ce(L) 3 (H 2 O) 2 ]·H 2 O} n ( a ), {[RE 2 (L) 6 (H 2 O)]·4H 2 O]} n (RE = Nd ( b ), Gd ( c )), {[RE 2 (L) 6 (H 2 O)]·3H 2 O]} n (RE = Dy ( d ), Y ( e )), {[RE 2 (…
View article: Syntheses of Pyrazolato‐ and Formamidinato‐lanthanoid(III) Diiodides from <i>in Situ</i> Generated lanthanoid(III) Pseudo‐Grignard Reagents
Syntheses of Pyrazolato‐ and Formamidinato‐lanthanoid(III) Diiodides from <i>in Situ</i> Generated lanthanoid(III) Pseudo‐Grignard Reagents Open
Trivalent lanthanoid pseudo‐Grignard reagents Ph p Ln III I (3‐p) (P=1 or 2; Ln=La, Ce, Nd, Er and Lu) are readily prepared by the oxidation of lanthanoid metals with iodobenzene at 25 °C, following pre‐activation of the metal with 1 drop …
View article: Synthesis and Structures of Oxide ‐Centred Alkali Metal (K, Li)/Lanthanoid (Ln3 or 4) 3,5‐Dimethylpyrazolate Cages ‐ Herbert Schumann Revisited
Synthesis and Structures of Oxide ‐Centred Alkali Metal (K, Li)/Lanthanoid (Ln3 or 4) 3,5‐Dimethylpyrazolate Cages ‐ Herbert Schumann Revisited Open
Reaction of lanthanoid tris(3,5‐dimethylpyrazolate) compounds, [Ln(Me 2 pz) 3 (thf)] 2 (Ln=La 1 a , Ce, Pr, Dy 1 b , Yb, Lu) with potassium or lithium bistrimethylsilylamide and with or without added 3,5‐dimethylpyrazole, or of lanthanoid …
View article: Synthesis of cationic lanthanoid tetraphenylborate crown ether complexes
Synthesis of cationic lanthanoid tetraphenylborate crown ether complexes Open
The efficacy of Me3NHBPh4 as a protolytic agent in the generation of reactive lanthanoid cations has been further explored. Reaction of [Nd(BH4)3(thf)4] with Me3NHBPh4 in a 1:3 mole ratio and dibenzo-18-crown-6 (DB18C6) in thf did not yiel…
View article: Lanthanoid pseudo-Grignard reagents: A review
Lanthanoid pseudo-Grignard reagents: A review Open
This review covers the progress of the chemistry of divalent lanthanoid pseudo-Grignard, compounds, E-LnX (E = C, N, O; X = I, Br, Cl, F), especially since the 2002 review of Petrov [1]. Emphasis is on synthetic pathways and the structures…
View article: Front Cover: Rare Earth 2‐Methyl‐3‐furoate Complexes: Effect of Steric Hindrance on Corrosion Inhibitor Properties (Eur. J. Inorg. Chem. 11/2024)
Front Cover: Rare Earth 2‐Methyl‐3‐furoate Complexes: Effect of Steric Hindrance on Corrosion Inhibitor Properties (Eur. J. Inorg. Chem. 11/2024) Open
The Front Cover shows our rare earth corrosion inhibitor work. Corrosion is a significant burden to infrastructure, including bridges, and we have shown that incorporation of steric bulk about heteroatoms on the ligands bound to rare earth…
View article: Rare Earths—The Answer to Everything
Rare Earths—The Answer to Everything Open
Rare earths, scandium, yttrium, and the fifteen lanthanoids from lanthanum to lutetium, are classified as critical metals because of their ubiquity in daily life. They are present in magnets in cars, especially electric cars; green electri…
View article: Rare Earth 2‐Methyl‐3‐furoate Complexes: Effect of Steric Hindrance on Corrosion Inhibitor Properties
Rare Earth 2‐Methyl‐3‐furoate Complexes: Effect of Steric Hindrance on Corrosion Inhibitor Properties Open
The preparation and characterization of six rare earth 2‐methyl‐3‐furoate (2m3fur) complexes are detailed in this study. Analysis through single‐crystal X‐ray diffraction, as well as powder XRD, reveals that all six compounds belong to one…
View article: Cover Feature: Reactivity of [Sm(DippForm)<sub>2</sub>(thf)<sub>2</sub>] with Substrates Containing Azo Linkages (Eur. J. Inorg. Chem. 1/2024)
Cover Feature: Reactivity of [Sm(DippForm)<sub>2</sub>(thf)<sub>2</sub>] with Substrates Containing Azo Linkages (Eur. J. Inorg. Chem. 1/2024) Open
The Cover Feature shows where we found a pot of gold on the banks of the Ross River in Townsville, Australia. The picture depicts the product of treating [Sm(DippForm)2(thf)2] with trans-azobenzene, which leads to the formation of [Smlll(D…
View article: Design and Advanced Manufacturing of NU‐1000 Metal–Organic Frameworks with Future Perspectives for Environmental and Renewable Energy Applications
Design and Advanced Manufacturing of NU‐1000 Metal–Organic Frameworks with Future Perspectives for Environmental and Renewable Energy Applications Open
Metal–organic frameworks (MOFs) represent a relatively new family of materials that attract lots of attention thanks to their unique features such as hierarchical porosity, active metal centers, versatility of linkers/metal nodes, and larg…
View article: CCDC 2297135: Experimental Crystal Structure Determination
CCDC 2297135: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2297133: Experimental Crystal Structure Determination
CCDC 2297133: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2297134: Experimental Crystal Structure Determination
CCDC 2297134: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Reactivity of [Sm(DippForm)<sub>2</sub>(thf)<sub>2</sub>] with Substrates Containing Azo Linkages
Reactivity of [Sm(DippForm)<sub>2</sub>(thf)<sub>2</sub>] with Substrates Containing Azo Linkages Open
This paper explores the interaction of divalent [Sm(DippForm) 2 (thf) 2 ] with substrates containing azo linkages. Treatment of [Sm(DippForm) 2 (thf) 2 ] with trans ‐azobenzene results in formation of mononuclear [Sm lll (DippForm) 2 (Ph 2…