Article
Chemistry, Inorganic & Nuclear
Nicolas Lentz, Alexandre Sodreau, Alejandra Acuna, Sonia Mallet-Ladeira, Eddy Maerten, Jean-Marc Sotiropoulos, Rene Segundo Rojas Guerrero, David Madec
Summary: An unusual series of germylenes and stannylenes with homoleptic symmetric and unsymmetric N-substituted sulfonimidamide ligands have been prepared and characterized. The electronic properties brought by the sulfonimidamide ligand were analyzed using DFT calculations.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Matthew T. Whited
Summary: This Perspective summarizes the common modes of cooperativity demonstrated for pincer frameworks featuring metal/main-group bonds, highlighting similarities among boron, aluminium, and silicon donors and identifying directions for further development.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Julia F. Vidlak, Mario N. Cosio, Nihal K. Sriramaneni, Nattamai Bhuvanesh, Oleg V. Ozerov, Miles W. Johnson
Summary: The synthesis and coordination chemistry of a new class of silyl pincer ligand with pyrrole-based linkers are reported. The steric and electronic properties of these ligands were examined through their complexes with palladium, rhodium, and platinum. The pyrrole-based linker reduces the donor ability of the ligands compared to their 1,2-phenylene counterparts, while maintaining a similar steric profile. Moreover, the silyl donor attached to the N-pyrrolyl groups exhibits a weaker trans influence than the ligand with 1,2-phenylene linkers.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Marta Fernandez-Buenestado, Rosie J. Somerville, Joaquin Lopez-Serrano, Jesus Campos
Summary: We present a novel iridium system with a long-tethered PGeP ligand, which allows access to the less common germylene form, never reported before for an 'NHC-type' Ge ligand. Computational studies confirm its bonding, and we demonstrate its application in the catalytic dehydrogenation of formic acid, showcasing the potential of this underdeveloped ligand type.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jiayu Zhang, Wenshuang Huang, Kailing Han, Guoyong Song, Shaowei Hu
Summary: A series of first-row early transition metal dialkyl complexes bearing pincer ligands have been synthesized and their activities in styrene polymerization have been explored.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Shweta Kalra, Daniel Pividori, Dominik Fehn, Chenshu Dai, Shicheng Dong, Shenglai Yao, Jun Zhu, Karsten Meyer, Matthias Driess
Summary: In this study, a new manganese(0) complex with a novel ligand was synthesized and its superior performance in highly selective hydroboration reactions was experimentally verified.
Article
Chemistry, Inorganic & Nuclear
Shintaro Takahashi, Jueri Sekiguchi, Kazuki Nakaya, Akihiko Ishii, Norio Nakata
Summary: Halogen-substituted silylenes play a crucial role in synthesizing silicon-based low-valent and multiple-bond species. This study presents a convenient synthesis for bromo- and iodosilylene supported by an iminophosphonamide ligand, expanding the limited reports on heavier halosilylenes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Alex Moerman, E. Daiann Sosa Carrizo, Benjamin Theron, Helene Cattey, Pierre Le Gendre, Paul Fleurat-Lessard, Adrien T. Normand
Summary: A series of complexes with pincer-type ligands were synthesized via P-P bond cleavage reaction, which exhibited stereoselectivity and showed reactivity towards C???O bond activation and transmetallation.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Manuel Luca Besmer, Henrik Braband, Sven Schneider, Bernhard Spingler, Roger Alberto
Summary: Research on Tc-99 complexes revealed that the two structurally characterized complexes obtained through chemical reactions are stable under a dinitrogen atmosphere, with tightly bound N-2 ligands.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Jan Pecak, Wolfgang Eder, Gerald Tomsu, Berthold Stoeger, Marc Pignitter, Karl Kirchner
Summary: A series of cobalt complexes stabilized by a monoanionic tridentate NCN pincer ligand were synthesized and characterized. Various paramagnetic and diamagnetic complexes were prepared and characterized through different treatments. X-ray crystallography, spectroscopic techniques, and computational calculations were used for compound characterization.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Fei Fang, Jia-Xin Kang, Cong-Qiao Xu, Jiarui Chang, Jie Zhang, Shujun Li, Xuenian Chen
Summary: The influence of the pincer platform composition and substitution on the reactivity and physical properties of pincer complexes is easily explored experimentally, with subtle effects on the molecular structures and thermodynamic stability. The bond lengths and strengths of M-C-ipso, M-P, and M-X were discussed, along with thermochemical balances for different types of pincer complexes.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Andie R. Delaney, Li-Juan Yu, Michelle L. Coote, Annie L. Colebatch
Summary: An expanded pincer ligand tBu-PONNOP has been synthesised and studied for its coordination with coinage metals. Bimetallic complexes were produced with different metal halide salts, showing varying degrees of interaction with the naphthyridyl backbone in the order Au < Ag < Cu. Additionally, salts [Ag-2(tBu-PONNOP)(2)][BAr4F](2) and [Ag-2(NCMe)(2)(tBu-PONNOP)]X-2 were prepared as potential sources of tBu-PONNOP via transmetallation.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hayato Sasaki, Yuki Yokouchi, Takumi Nukazawa, Takeaki Iwamoto
Summary: In this research, a rapid and mild reaction was reported for the synthesis of NHC-coordinated bis(trimethylsilyl)silylene 2, which exhibited coordination to BPh3, addition reactions with 2,3-dimethylbutadiene and Me3SiI, and an unprecedented substitution reaction with (Me3Si)3SiI, generating (Me3Si)3Si-substituted IMe4-coordinated silylene 6.
Article
Chemistry, Multidisciplinary
Rex C. Handford, Trisha T. Nguyen, Simon J. Teat, R. David Britt, T. Don Tilley
Summary: The synthesis of bimetallic molecular silicide complexes through Si-H bond activations in SiH4 at metal centers has been reported. Different Co complexes led to different reactions with SiH4, resulting in the formation of silicide complexes as products. The [BP2tBuPz] ligand has a significant effect on the Co-Si bonding and can facilitate the functionalization of the mu-silicon atom in a molecular silicide.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Editorial Material
Chemistry, Organic
Qingbin Zhao, Qiuhua Geng, Yongli Li, Jiawei Li, Zhenxing Liu
Summary: Due to their versatile reactivities, acylsilanes have been extensively used in organic synthesis. However, in the last two years, unprecedented wide applications of this compound have been observed in various fields beyond organic synthesis, such as photo-click reactions for polymer-backbone editing, catalytic Fisher carbene formation, and acylsilane-hydroxylation ligation. The recent development of a quick synthetic method for acylsilanes further enhances the attractiveness of this chemistry. This highlight article showcases selected representative examples and highlights their potential utilities in the future.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Bryan J. Foley, Oleg Ozerov
Article
Chemistry, Multidisciplinary
Matthew T. Whited, Jia Zhang, Anna M. Conley, Senjie Ma, Daron E. Janzen, Daniela Kohen
Summary: The research demonstrates a metal/ligand cooperative approach to reducing small molecules using metal silylene complexes, achieving net two-electron transformations through one-electron redox processes. Silicon activates incoming substrates and mediates the generation of bimetallic products with two metal centers, suitable for 3d metals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Spectroscopy
Eliel Villa-Aleman, Don D. Dick, Jonathan H. Christian, Bryan J. Foley
Summary: Plutonium dioxide is an important compound used in nuclear fuel, and understanding its structural and spectroscopic properties has numerous applications. Laser-induced heating has been shown for the first time to reverse damage to an aged and damaged PuO2 lattice, indicating its potential in reversing age-damage in PuO2. This laser annealing approach allows for in situ observation of temperature-dependent Raman spectral changes, providing insight into the thermodynamics of structural alterations in radiolytically damaged PuO2.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Biochemistry & Molecular Biology
Rodrigo A. Lemos Silva, Demetrio A. da Silva Filho, Megan E. Moberg, Ted M. Pappenfus, Daron E. Janzen
Summary: X-ray structural determinations and computational studies were used to investigate halogen interactions in two halogenated oxindoles. Comparative analyses of interaction energy and properties were carried out for different types of interactions, revealing possible pathways for intermolecular interactions through electron density and molecular electrostatic potential analyses.
Article
Chemistry, Physical
Andrew Miskowiec, K. J. Pastoor, Jonathan H. Christian, J. L. Niedziela, Bryan J. Foley, Sara Isbill, A. E. Shields, L. L. Daemen, E. Novak, E. Nykwest, T. Spano, Matthew S. Wellons, M. Jensen, J. Shafer
Summary: Using inelastic neutron scattering, researchers investigate the vibrational spectra of uranium tetrafluoride hydrate (UFH) and its deuterated analogue, in conjunction with density functional theory calculations. The study reveals different chemical environments of water molecules in the vibrational spectra, providing insights for interpreting certain features in the infrared spectrum and guiding future research on UFH for environmental or forensics purposes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Matthew T. Whited, Wenlai Han, Helen J. Jin-Lee, Zach DiNardo, Emma Watson, Jia Zhang, Daniela Kohen
Summary: A cobalt silylene linkage enables metal/ligand cooperative activation and significantly improves the catalytic isocyanate generation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Brian Zou, Kellie A. Stellmach, Stella M. Luo, Feven L. Gebresilassie, Healeam Jung, Cathy K. Zhang, Adam D. Bass, Daron E. Janzen, Dennis D. Cao
Summary: This study demonstrates a new method for the synthesis of desirable halogenated benzene-1,2,3,4-tetracarboxylic diimide derivatives and shows that sterically challenging N-derivatizations can be achieved under microwave reactor conditions.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Instruments & Instrumentation
Eliel Villa-Aleman, Jonathan H. Christian, Jason R. Darvin, Bryan J. Foley, Don D. Dick, Brent Fallin, Kimberly A. S. Fessler
Summary: Diffuse reflectance spectroscopy was used to measure Pu-2(C2O4)(3)center dot 9H(2)O and its thermal decomposition product PuO2 in the shortwave infrared spectral region. The PuO2 samples produced at different calcination temperatures exhibited distinct spectral features, with sharper and more intense bands observed at higher temperatures. Principal component analysis of the spectra allowed for clear ranking and categorization of the PuO2 samples based on their calcination temperature, providing retrospective information about the production process.
APPLIED SPECTROSCOPY
(2023)
Article
Spectroscopy
Eliel Villa-Aleman, Don D. Dick, Jonathan H. Christian, Bryan J. Foley, Lindsay E. Roy
Summary: The Raman spectrum of PuO2 was measured, and several never-before-seen high-energy bands were discovered, believed to have an electronic origin. These bands were observed in both freshly calcined and radiolytically aged PuO2, providing a new way for identifying PuO2 in nuclear nonproliferation and forensics purposes.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Crystallography
Daron E. Janzen, Maya S. Butler, Eric W. Reinheimer
Summary: N-benzylcinchonidinium bromide is a quaternary ammonium salt of the cinchona alkaloid cinchonidine, widely used as a chiral phase-transfer catalyst and chiral resolution agent. The study shows that both classical and non-classical hydrogen-bonding interactions, as well as anion effects, play key mechanistic roles in the catalysis of cinchona alkaloids. In order to understand the effects of water on these intermolecular interactions, the structures of anhydrous and sesquihydrate forms were determined.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Bryan J. Foley, Jonathan H. Christian, Christopher A. Klug, Eliel Villa-Aleman, Matthew S. Wellons, Michael DeVore, Nicholas Groden, Jason Darvin
Summary: This manuscript describes the chemical transformations that occur during the hydrolysis of uranium tetrafluoride (UF4) when stored in humid air. Raman spectroscopy was found to be particularly useful in observing the chemical changes to UF4, while X-ray diffraction and F-19 NMR measurements showed no changes. The reactions between UF4 and water were observed primarily on the surface of UF4 particulates via a method similar to surface corrosion of metals.
DALTON TRANSACTIONS
(2022)
Review
Chemistry, Inorganic & Nuclear
Matthew T. Whited
Summary: This Perspective summarizes the common modes of cooperativity demonstrated for pincer frameworks featuring metal/main-group bonds, highlighting similarities among boron, aluminium, and silicon donors and identifying directions for further development.
DALTON TRANSACTIONS
(2021)
Article
Crystallography
Matthew T. Whited, Margaret A. Ball, Alison Block, Benjamin A. Brewster, LouLou Ferrer, Helen J. Jin-Lee, Colby J. King, Jamie D. North, Inger L. Shelton, David G. Wilson
Summary: This article presents three cyclopentadienylmolybdenum(II) propionyl complexes with triarylphosphine ligands featuring different para substituents. These complexes exhibit similar molecular structures, with a four-legged piano-stool geometry, and are akin to related acetyl complexes. The extended structures of the complexes vary somewhat, with the para substituent of the triarylphosphine engaging in non-classical hydrogen-bonding interactions.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jonathan H. Christian, Christopher A. Klug, Michael DeVore, Eliel Villa-Aleman, Bryan J. Foley, Nicholas Groden, A. Taylor Baldwin, Matthew S. Wellons
Summary: The room temperature hydrolysis of UF4 was studied, revealing UF4(H2O)(2.5) as the primary solid hydrolysis product and the formation of a small amount of uranyl fluoride. These findings are significant for various nuclear science fields.
DALTON TRANSACTIONS
(2021)
