When this iridium compound is exposed to special hydrogen gas, its hydrogen atoms show enhanced signals in NMR tests, which is a sign of polarization transfer.
Scientific Claim
The iridium complex IrCl(H)2(COE)(py)2 exhibits PHIP effects when exposed to parahydrogen, with hydride ligand signals showing characteristic enhancements in the NMR spectrum.
Original Statement
“When p-H2 is used, the corresponding hydride ligand signals exhibit the PHIP effect, as detailed in Figure 2. These observations confirm that 2 undergoes reversible H2 loss, and when the same sample was exposed to p-H2 in a low magnetic field for 10 s prior to making the high-field NMR measurement, the SABRE effect was observed.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study reports observed PHIP effects in the hydride ligand signals, which is appropriate for describing an association between the complex and polarization transfer.
More Accurate Statement
“The iridium complex IrCl(H)2(COE)(py)2 is associated with exhibiting PHIP effects when exposed to parahydrogen, with hydride ligand signals showing characteristic enhancements in the NMR spectrum.”