Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘jacs (journal of the am. chemical society)’ Category

Carbon copies? Authors retract paper from leading chemistry journal

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jacsat_v135i031.inddThe authors of a 2008 Journal of the American Chemical Society (JACS) paper have retracted it after a structure was “mistakenly assigned.”

The article, “Highly Enantioselective Radical Addition to N-Benzoyl Hydrazones Using Chiral Ammonium Salts,” was written by Doo Ok Jang and Sang Yoon Kim, chemists at Yonsei University, in Wonju. According to the abstract (which includes this molecular schema):

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University of La Laguna ethics committee finds evidence of misconduct in chemists’ papers

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jacsat_v134i049.inddA committee at the University of La Laguna (ULL), in Spain’s Canary Islands, has found evidence of misconduct by two chemists in at least two papers. One of those authors had already been forced to retract a paper in the Journal of the American Chemical Society (JACS).

The story is complicated. Here’s a try at telling it: Read the rest of this entry »

Chemist Craig Hill, author of JACS and Science papers, explains the retractions

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Last week, we reported that Craig Hill, a prominent chemist at Emory University, and his colleagues at six other institutions are retracting three papers they published in the mid-2000s, two in the Journal of the American Chemical Society and one in Science.

We have now spoken with Hill, who walked us through the history of the research. According to Hill, the international team of researchers, after “unusually extensive experiments” felt they had enough evidence to publish their original articles

but all authors (and others) remained skeptical given the unprecedented nature of these compounds.

Hill’s lab continued to conduct experiments and probe the original data after the publications, he said. (Hill wrote a piece for Nature in 2008 explaining the significance of the research, which, among other things, might lead to better ways of harnessing solar energy.) Read the rest of this entry »

JACS, Science retracting three papers from leading Emory chemist Craig Hill

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The Journal of the American Chemical Society (JACS) and Science are retracting three papers by Craig Hill and colleagues which, we’re told, have been the focus of intense scrutiny within the field since they first appeared in the mid-2000. Hill is an internationally renowned expert in catalysis who has won a slew of awards for his work.

JACS has acted first, issuing two notices recently about the papers it published. The first notice, for 2005’s “A Palladium-Oxo Complex. Stabilization of This Proposed Catalytic Intermediate by an Encapsulating Polytungstate Ligand,” states: Read the rest of this entry »

JACS makes it official, retracting Breslow “space dinosaurs” paper for “similarity to his previously published reviews”

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Last month, we (and others) reported that the Journal of the American Chemical Society (JACS) had temporarily withdrawn a paper by a former president of the society after a number of chemists pointed out similarities between the March 25 article and previous ones by the author, Ronald Breslow.

The paper had drawn puzzled looks thanks to an April 11 press release — since deleted — headlined “Could ‘advanced’ dinosaurs rule other planets?” In its note last month, the journal said: Read the rest of this entry »

JACS temporarily pulls “space dinosaurs” paper for alleged duplication

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Duplication has, as we noted on Twitter the other day, been tripping up more and more scientists. And now self-plagiarism has snared a prominent Columbia University chemist in a paper that left many people scratching their heads to begin with.

As reported by the Chembark blog and Nature, the Journal of the American Chemical Society (JACS) has pulled a paper by Ronald Breslow for alleged duplication. The page for “On Evidence for the Likely Origin of Homochirality in Amino Acids, Sugars, and Nucleosides on Prebiotic Earth,” originally published on March 25, now includes this: Read the rest of this entry »

Stanford group retracts JACS paper, but revisits and validates findings

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A prominent Stanford University chemistry lab has been forced to retract a paper in the Journal of the American Chemical Society (JACS). According to the retraction notice:

Due to inconsistencies between some of the assigned structures and the experimental data that appear in the paper, the authors retract this publication. We regret very much this unfortunate occurrence.

The Retraction Watch tipster who alerted us to this retraction explained what the original paper reported: Read the rest of this entry »

Written by Ivan Oransky

April 11th, 2011 at 9:30 am

No medals: Group that retracted JACS gold nanoparticle paper retracts silver one, too

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Earlier this month, we reported that a group led by Jicun Ren, of Shanghai Jiaotong University, had retracted a paper in the Journal of the American Chemical Society (JACS) on a way to measure the concentration of gold nanoparticles. Turns out they are also retracting a very similar paper about silver nanoparticles published in the January 18, 2010 issue of Chemistry: A European Journal.

Ren tells Retraction Watch that the silver paper, “Ultrahighly sensitive homogenous detection of DNA and microRNA by using single-silver-nanoparticle counting,” is being retracted for the same reason as the gold one. From our earlier post (just substitute “silver” for “gold”): Read the rest of this entry »

Written by Ivan Oransky

December 27th, 2010 at 9:30 am

Journal of the American Chemical Society retracts gold nanoparticle paper

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On October 20, the Journal of the American Chemical Society retracted a 2009 paper. The retraction notice for “Single Gold Nanoparticles Counter: An Ultrasensitive Detection Platform for One-Step Homogeneous Immunoassays and DNA Hybridization Assays” was somewhat opaque:

This article is being retracted due to inaccurate DNA hybridization detection results caused by application of an incorrect data processing method. The authors regret any confusion that may have been created by the paper’s publication.

We contacted the paper’s lead author, Jicun Ren, of the College of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, to ask for more detail. He responded: Read the rest of this entry »

Written by Ivan Oransky

December 17th, 2010 at 9:30 am

ORI comes down (hard) on Bengu Sezen, Columbia chemist accused of fraud

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The Office of Research Integrity has thrown a heavy book at Bengu Sezen, a former chemist at Columbia University, alleging that school and agency investigators turned up 21 instances of research misconduct by the disgraced scientist.

According to the agency: Read the rest of this entry »