Bernd Morgenstern
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View article: Synthesis, Crystal Structure and Optical Properties of Novel 1,10-Phenanthroline Derivatives Containing 2,6-Diisopropylphenoxy Substituents
Synthesis, Crystal Structure and Optical Properties of Novel 1,10-Phenanthroline Derivatives Containing 2,6-Diisopropylphenoxy Substituents Open
Two phenanthroline derivatives, 2-(2,6-diisopropylphenoxy)-9-phenyl-1,10-phenanthroline and 2,9-bis(2,6-diisopropylphenoxy)-1,10-phenanthroline, were synthesized. The unsymmetrical derivative was obtained in high yield through a sequence c…
View article: A Bis(germaamidine) through Nitrene Insertion into GeSi Bonds
A Bis(germaamidine) through Nitrene Insertion into GeSi Bonds Open
Amidines (with two nitrogen atoms around the unsaturated carbon center) are important synthetic building blocks. In particular, phenylene‐bridged derivatives are extensively used in the synthesis of cyclic and polymeric structures for phar…
View article: A Para-Substituted 2-Phenoxy-1,10-Phenanthroline Ligand for Lanthanide Sensitization: Asymmetric Coordination and Enhanced Emission from Eu3+, Tb3+, Sm3+ and Dy3+ Complexes
A Para-Substituted 2-Phenoxy-1,10-Phenanthroline Ligand for Lanthanide Sensitization: Asymmetric Coordination and Enhanced Emission from Eu3+, Tb3+, Sm3+ and Dy3+ Complexes Open
A para-substituted 1,10-phenanthroline ligand, 2-(4-methylphenoxy)-1,10-phenanthroline (L24), was synthesized and structurally characterized. Complexes with Eu3+, Tb3+, Sm3+, and Dy3+ were obtained in a 2:1 ligand-to-metal ratio and analyz…
View article: 2,3‐Diboratabutadiene Complexes of Group 4 Metals and their Donor‐Induced Oxidative Cleavage to Methyleneboranes
2,3‐Diboratabutadiene Complexes of Group 4 Metals and their Donor‐Induced Oxidative Cleavage to Methyleneboranes Open
Metal complexes of conjugated olefins have been known for a century. The formal heterosubstitution of carbon atoms in such ligands significantly alters their electronic properties. While several examples with terminal boron centers are kno…
View article: Total Synthesis of Jerangolid B via sp<sup>3</sup>–sp<sup>2</sup> Stille Coupling
Total Synthesis of Jerangolid B via sp<sup>3</sup>–sp<sup>2</sup> Stille Coupling Open
First isolated from Sorangium cellulosum So ce 307, jerangolids are a class of natural products with high antifungal activity and minimal toxicity toward mammals. Comprised of a skipped diene substructure with a chiral center in bet…
View article: Cryopreservation and transplantation of ovarian tissue as post-cancer tissue therapy and an activator of oogenesis
Cryopreservation and transplantation of ovarian tissue as post-cancer tissue therapy and an activator of oogenesis Open
In a recent publication (Reprod. Biomed. Online, 2024) it was presented point of view that, for post-cancer patients, in vitro fertilization (IVF) is a more effective method than ovarian tissue cryopreservation (OTC). In their commentary, …
View article: Hf<sub>6</sub>Al<sub>7</sub> and Hf<sub>4.44(1)</sub>Nb<sub>1.56(1)</sub>Al<sub>7</sub>—the First Fully Ordered Main Group Metal Containing W<sub>6</sub>Fe<sub>7</sub> Type Compound and its Ternary Coloring Variant
Hf<sub>6</sub>Al<sub>7</sub> and Hf<sub>4.44(1)</sub>Nb<sub>1.56(1)</sub>Al<sub>7</sub>—the First Fully Ordered Main Group Metal Containing W<sub>6</sub>Fe<sub>7</sub> Type Compound and its Ternary Coloring Variant Open
Attempts to synthesize Hf 4 NbAl 7 led to the discovery of nominal Hf 4 Nb 2 Al 7 instead of the envisioned product. It was identified based on powder diffraction data. The compound can be described as a substitutional/coloring variant of …
View article: Hexaphenyl-1,2-Diphosphonium Dication [Ph<sub>3</sub>P–PPh<sub>3</sub>]<sup>2+</sup>: Superacid, Superoxidant, or Super Reagent?
Hexaphenyl-1,2-Diphosphonium Dication [Ph<sub>3</sub>P–PPh<sub>3</sub>]<sup>2+</sup>: Superacid, Superoxidant, or Super Reagent? Open
The oxidation of triphenylphosphine by perfluorinated phenaziniumF aluminate in difluorobenzene affords hexaaryl-1,2-diphosphonium dialuminate 1. Dication 12+ is valence isoelectronic with elusive…
View article: Saarvienin A—A Novel Glycopeptide with Potent Activity against Drug‐Resistant Bacteria
Saarvienin A—A Novel Glycopeptide with Potent Activity against Drug‐Resistant Bacteria Open
A member of a new family of glycopeptides, named saarvienin A, was isolated from a rare actinomycete Amycolatopsis sp. YIM10. Extensive NMR and MS analyses revealed a halogenated peptide core comprising four amino acids cyclized via a urei…
View article: Saarvienin A—A Novel Glycopeptide with Potent Activity against Drug‐Resistant Bacteria
Saarvienin A—A Novel Glycopeptide with Potent Activity against Drug‐Resistant Bacteria Open
A member of a new family of glycopeptides, named saarvienin A, was isolated from a rare actinomycete Amycolatopsis sp. YIM10. Extensive NMR and MS analyses revealed a halogenated peptide core comprising four amino acids cyclized via a urei…
View article: Synthesis and crystal structure analysis of substituted bicyclo[3.3.1]nonanones
Synthesis and crystal structure analysis of substituted bicyclo[3.3.1]nonanones Open
A set of novel bicyclo[3.3.1]nonanones, namely, 4-methoxybicyclo[3.3.1]non-3-ene-2,9-dione, C 10 H 12 O 3 ( 1 ), 4,9,9-trimethoxybicyclo[3.3.1]non-3-en-2-ol, C 12 H 20 O 4 ( 2 ), 4-methoxy-6-methyl-1-(3-methylbut-2-en-1-yl)-6-(4-methylpent…
View article: Front Cover: Synthesis and Properties of Symmetrical and Asymmetrical Polyferrocenylmethylenes (Chem. Eur. J. 14/2025)
Front Cover: Synthesis and Properties of Symmetrical and Asymmetrical Polyferrocenylmethylenes (Chem. Eur. J. 14/2025) Open
View article: Transannular Acylation Facilitates C<sub>5</sub>–C<sub>9</sub> Bond Formation in Hyperforin Total Synthesis
Transannular Acylation Facilitates C<sub>5</sub>–C<sub>9</sub> Bond Formation in Hyperforin Total Synthesis Open
Hyperforin is considered the flagship congener among polycyclic polyprenylated acylphloroglucinols due to its compelling and complex molecular architecture, coupled with remarkable biological activity, thus rendering it an appealing synthe…
View article: Benzothiazolin-2-ylidene gold(I) complexes as precursors for gold nanoparticles
Benzothiazolin-2-ylidene gold(I) complexes as precursors for gold nanoparticles Open
View article: An Authentic Al=Si Double Bond
An Authentic Al=Si Double Bond Open
Aluminatasilenes are the elusive heavier counterparts of the well‐known borataalkenes in which the B=C double bond is formally replaced by an Al=Si moiety. We report the isolation of a four‐membered anionic AlSi 3 cycle with a bona fide Al…
View article: Eine authentische Al=Si‐Doppelbindung
Eine authentische Al=Si‐Doppelbindung Open
Aluminatasilene sind die schwer zu fassenden schwereren Gegenstücke der bekannten Borataalkene, bei denen die B=C‐Doppelbindung formal durch eine Al=Si‐Einheit ersetzt ist. Wir berichten über die Isolierung eines viergliedrigen anionischen…
View article: The Hexaphenyl-1,2-Diphosphonium Dication [Ph3P–PPh3]2+
The Hexaphenyl-1,2-Diphosphonium Dication [Ph3P–PPh3]2+ Open
The oxidation of triphenylphosphine by perfluorinated phenaziniumF aluminate in difluorobenzene affords the hexaaryl-1,2-di¬phosphonium dialuminate 1. Dication 12+ is isoelectronic with elusive hexaphenylethane, where instead the formation…
View article: Gold(I) Terminal Imides: CH Auration and Dehydrogenation
Gold(I) Terminal Imides: CH Auration and Dehydrogenation Open
We present the isolation and reactivity of terminal gold(I) imido complexes, and report on the effect of capping alkali-cations. These anionic and strongly basic “super”-imide complexes engage in CH-bond auration including benzene and pyri…
View article: Silagermylenation of CO bonds and radical fragmentation of CO <sub>2</sub> -expanded bis(germylene) by a cyclic (alkyl)(amino)carbene
Silagermylenation of CO bonds and radical fragmentation of CO <sub>2</sub> -expanded bis(germylene) by a cyclic (alkyl)(amino)carbene Open
CO 2 and EtNCO are inserted into the Ge–Si bonds of an NHC-bis(germylene) with nucleophilic Ge( ii ) lone-pairs and an electrophilic para -silylenearylene backbone. CAAC-induced fragmentation yields a germylene with a tethered CAAC-radical.
View article: Heterobimetallic unsaturated silicon clusters (siliconoids) with transition metal-expanded scaffolds
Heterobimetallic unsaturated silicon clusters (siliconoids) with transition metal-expanded scaffolds Open
We report the cluster expansion to an anionic iridasiliconoid with rare Ir–Li interaction revealing structural resemblance to the homonuclear Si 7 -species.
View article: Synthesis and Properties of Symmetrical and Asymmetrical Polyferrocenylmethylenes
Synthesis and Properties of Symmetrical and Asymmetrical Polyferrocenylmethylenes Open
The synthesis of differently substituted polyferrocenylmethylenes (PFM) via ring‐opening transmetalation polymerization (ROTP) is reported. A number of novel, symmetrically and asymmetrically substituted carba[1]magnesocenophanes have been…
View article: Schwere Pentaisopropylcyclopentadienyltriylene und deren heterobimetallische Komplexe
Schwere Pentaisopropylcyclopentadienyltriylene und deren heterobimetallische Komplexe Open
Es wird eine Serie von Triylenen der schweren Gruppe 13 Elemente Gallium, Indium und Thallium, mit dem Pentaisopropylcyclopentadienylliganden, berichtet. Die Verbindungen wurden in Lösung und im Festkörper charakterisiert und in Hinblick a…
View article: Heavy Pentaisopropylcyclopentadienyltriylenes and their Heterobimetallic Complexes
Heavy Pentaisopropylcyclopentadienyltriylenes and their Heterobimetallic Complexes Open
A series of triylenes of the heavy group 13 elements gallium, indium and thallium, carrying the pentaisopropylcyclopentadienyl ligand is reported. The compounds were characterized in solution and in the solid‐state and their donor ligand p…
View article: A Constrained Geometry Fluorenyl Amido Magnesium Catalyst for Amine‐Borane Dehydrocoupling
A Constrained Geometry Fluorenyl Amido Magnesium Catalyst for Amine‐Borane Dehydrocoupling Open
A fluorenyl amido constrained geometry magnesium complex is described, which was obtained by deprotonation of the corresponding neutral ligand system with dibutyl magnesium. Its structure was determined by SC‐XRD and it was shown to be a p…
View article: A Lead(II) Substituted Triplet Carbene
A Lead(II) Substituted Triplet Carbene Open
Reaction of the pincer-type ligand L3 supported complex [L3PbBr][BArF24] (1) with Li[(C(═N2)TMS)] furnishes [L3Pb(C(═N2)TMS)][BArF24] (2). Diazo-com…
View article: π‐Complexes Derived from Non‐classical Diboriranes: Side‐on vs. End‐on Carbonylative Ring Expansion
π‐Complexes Derived from Non‐classical Diboriranes: Side‐on vs. End‐on Carbonylative Ring Expansion Open
Unlike cyclopropanes, the analogous B 2 C species (diboriranes) tend to adopt non‐classical Hückel‐aromatic structures with bridging moieties R between the boron atoms. The coordination of the thus generated cyclic 2e − π‐system to transit…
View article: π‐Komplexe aus Nicht‐Klassischen Diboriranen: Side‐on vs. End‐on Carbonylierende Ringerweiterung
π‐Komplexe aus Nicht‐Klassischen Diboriranen: Side‐on vs. End‐on Carbonylierende Ringerweiterung Open
Im Gegensatz zu Cyclopropanen neigen die analogen B 2 C‐Spezies (Diborirane) dazu, nicht‐klassische Hückel‐aromatische Strukturen mit verbrückenden Resten R zwischen den Boratomen auszubilden. Die Koordination des so erzeugten zyklischen 2…
View article: 8-(2-Methoxyphenyl)-6-methyl-2-(1-methyl-1H-benzo[d]imidazol-2-yl)quinoline
8-(2-Methoxyphenyl)-6-methyl-2-(1-methyl-1H-benzo[d]imidazol-2-yl)quinoline Open
For very first time, we report the synthesis of 8-(2-methoxyphenyl)-6-methyl-2-(1-methyl-1H-benzo[d]imidazol-2-yl)quinoline 1. This was achieved in several steps, including usage of the Suzuki reaction for functionalization of 2-(1H-benzo[…
View article: Investigation of the Sensing Properties of Lanthanoid Metal–Organic Frameworks (Ln-MOFs) with Terephthalic Acid
Investigation of the Sensing Properties of Lanthanoid Metal–Organic Frameworks (Ln-MOFs) with Terephthalic Acid Open
The solvothermal synthesis of LnCl3.nH2O with terephthalic acid (benzene-1,4-dicarboxylic acid, H2BDC) produced metal–organic frameworks (LnBDC), [Ln2(BDC)3(H2O)4]∞, where Ln = Sm, Eu, Tb, and Dy. The materials obtained were characterized …
View article: 8-(2-Мethoxyphenyl)-6-methyl-2-(1-methyl-1Hbenzo[d]imidazol-2-yl)quinoline
8-(2-Мethoxyphenyl)-6-methyl-2-(1-methyl-1Hbenzo[d]imidazol-2-yl)quinoline Open
For very first time, we report the synthesis of 8-(2-methoxyphenyl)-6-methyl-2-(1-methyl-1H-benzo[d]imidazol-2-yl)quinoline 1. This was achieved in several steps, including usage of Suzuki reaction for functionalization of 2-(1H-benzo[d]im…