High-Pressure Synthesis of Pd(N5)2·N2: One-Dimensional Pentazolate Coordination Polymer with Guest Nitrogen Molecules.
6 affiliations
- 1Goethe University Frankfurt , Institute of Inorganic and Analytical Chemistry, Max-von-Laue-Straße 7, Frankfurt60438, Germany.
- 2Goethe University Frankfurt , Institute of Geosciences, Altenhöferallee 1, Frankfurt60438, Germany.
- 3Center for Advanced Radiation Sources, University of Chicago, Lemont, Illinois60439, United States.
- 4HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois60439, United States.
- 5Department of Mathematics, Howard University, Washington D.C.20059, United States.
- 6The Earth and Planets Laboratory, Carnegie Institution for Science, Washington D.C.20015, United States.
Abstract
Pentazolates, an emerging family of nitrogen-rich materials featuring the aromatic cyclo-N5- anion, typically crystallize as nonpolymeric or three-dimensional (3D) coordination networks, whereas low-dimensional (1D and 2D) forms remain exceptionally rare. Here, we exploit the square-planar coordination preference of d8 Pd2+ to achieve dimensional control and synthesize Pd(N5)2·N2, the first high-pressure 1D pentazolate coordination polymer. The compound forms in a laser-heated diamond anvil cell at 118 GPa and 2900 K, while lower-pressure experiments yield only PdN2 dinitride. The crystal structure of Pd(N5)2·N2 was determined by synchrotron single-crystal X-ray diffraction from a multigrain sample and corroborated by density functional theory calculations. This discovery establishes a strategy for engineering low-dimensional pentazolate-based materials and potentially enabling dimensional control in other polynitrides. We also provide an overview of experimentally synthesized high-pressure pentazolates and discuss how cation properties influence their synthesis pressures, thereby improving understanding of pentazolate formation pressures.
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BibTeX
@article{aslandukov2026highpressure,
title = {{High-Pressure Synthesis of Pd(N5)2·N2: One-Dimensional Pentazolate Coordination Polymer with Guest Nitrogen Molecules.}},
author = {Andrey Aslandukov and Alena Aslandukova and Elena Bykova and Stella Chariton and Vitali Prakapenka and Jesse S Smith and Mohammad Mahmood and Alexander F Goncharov and Maxim Bykov},
journal = {Inorganic chemistry},
year = {2026},
month = oct,
doi = {10.1021/acs.inorgchem.6c03152},
url = {https://europepmc.org/article/MED/42916914},
note = {CC BY},
}
RIS
TY - JOUR
TI - High-Pressure Synthesis of Pd(N5)2·N2: One-Dimensional Pentazolate Coordination Polymer with Guest Nitrogen Molecules.
AU - Andrey Aslandukov
AU - Alena Aslandukova
AU - Elena Bykova
AU - Stella Chariton
AU - Vitali Prakapenka
AU - Jesse S Smith
AU - Mohammad Mahmood
AU - Alexander F Goncharov
AU - Maxim Bykov
PY - 2026
DA - 2026/10/01
JO - Inorganic chemistry
DO - 10.1021/acs.inorgchem.6c03152
UR - https://europepmc.org/article/MED/42916914
AB - Pentazolates, an emerging family of nitrogen-rich materials featuring the aromatic cyclo-N5- anion, typically crystallize as nonpolymeric or three-dimensional (3D) coordination networks, whereas low-dimensional (1D and 2D) forms remain exceptionally rare. Here, we exploit the square-planar coordination preference of d8 Pd2+ to achieve dimensional control and synthesize Pd(N5)2·N2, the first high-pressure 1D pentazolate coordination polymer. The compound forms in a laser-heated diamond anvil cell at 118 GPa and 2900 K, while lower-pressure experiments yield only PdN2 dinitride. The crystal structure of Pd(N5)2·N2 was determined by synchrotron single-crystal X-ray diffraction from a multigrain sample and corroborated by density functional theory calculations. This discovery establishes a strategy for engineering low-dimensional pentazolate-based materials and potentially enabling dimensional control in other polynitrides. We also provide an overview of experimentally synthesized high-pressure pentazolates and discuss how cation properties influence their synthesis pressures, thereby improving understanding of pentazolate formation pressures.
SN - 0020-1669
SN - 1520-510X
ER -