C
Christoffel van Niekerk
Researcher at San Diego State University
Publications - 9
Citations - 238
Christoffel van Niekerk is an academic researcher from San Diego State University. The author has contributed to research in topics: Internal medicine & Medicine. The author has an hindex of 3, co-authored 4 publications receiving 223 citations.
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Journal ArticleDOI
Evolution of iridium-based molecular catalysts during water oxidation with ceric ammonium nitrate.
Douglas B. Grotjahn,Derek B. Brown,Jessica K. Martin,David C. Marelius,Marie-Caline Abadjian,Hai N. Tran,Gregory Kalyuzhny,Kenneth S. Vecchio,Zephen G. Specht,Sara A. Cortes-Llamas,Valentín Miranda-Soto,Christoffel van Niekerk,Curtis E. Moore,Arnold L. Rheingold +13 more
TL;DR: Evidence for extensive modification of many Ir-based WOCs even after exposure to only 5 or 15 equiv of Ce(IV) (whereas typically 100-10000 equiv are employed during WOC testing) is provided.
Journal ArticleDOI
Enabling bifunctionality and hemilability of N-heteroaryl NHC complexes.
Zephen G. Specht,Sara A. Cortes-Llamas,Sara A. Cortes-Llamas,Hai N. Tran,Christoffel van Niekerk,Khing T. Rancudo,James A. Golen,Curtis E. Moore,Arnold L. Rheingold,Tammy J. Dwyer,Douglas B. Grotjahn +10 more
TL;DR: A fundamentally different approach is introduced, where a substituent on an NHC ligand will act as a hydrogen bond acceptor or base, which could facilitate catalysis, which should be of general application to NHC chemistry.
Journal ArticleDOI
Bifunctional Chelates Optimized for Molecular MRI
Erik C. Wiener,Marie-Caline Abadjian,Raghvendra S. Sengar,Luce Vander Elst,Christoffel van Niekerk,Douglas B. Grotjahn,Po Yee Leung,Christie Schulte,Curtis E. Moore,Arnold L. Rheingold +9 more
TL;DR: The rotationally constrained Gd(III)-DOTMA derivative has ∼40% higher relaxivity at 37 °C, which could increase its sensitivity as an MRI agent as well as reduce the dose of the targeting agent.
Journal ArticleDOI
Synthesis, Characterization, Reactivity of η 3 -allylPd(L)(X), Where X = Cl and L = Imidazolylphosphine and Their Application in Aryl Amination Reactions
TL;DR: In this paper, the synthesis of new mono-(imidazolylphosphine) palladium chloride complexes was reported, which readily ionize to form stable square planar complexes in which the heterocyclic nitrogen coordinates to Pd.
Journal ArticleDOI
1108 peri-procedural complications and long-term outcomes in atrial fibrillation patients stratified for chronic kidney disease severity undergoing left atrial appendage occlusion: results from an international, multicentre registry
Michele Magnocavallo,Domenico G. Della Rocca,Christoffel van Niekerk,Thomas Gilhofer,Grace Ha,Gabriele D´ambrosio,Jennifer Galvin,Lukas Urbanek,Boris Schmidt,J. Christoph Geller,Dhanunaja Lakkireddy,Luigi Di Biase,Matthew J. Price,Moussa Mansour,Jacqueline Saw,Rodney Horton,Douglas N. Gibson,Andrea Natale +17 more
TL;DR: In this article , the impact of kidney function on peri-procedural complications and clinical outcomes in Atrial Fibrillation (AF) patients undergoing left atrial appendage occlusion (LAAO) with a Watchman device was evaluated.