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While nonporous CPs show efficient CO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010to\u2010C\n                    <jats:sub>1<\/jats:sub>\n                    conversion with exceptional stability, their application for C\n                    <jats:sub>2<\/jats:sub>\n                    synthesis remains unexplored. Herein, we report the first rational design of nonporous CPs for efficient CO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010to\u2010C\n                    <jats:sub>2<\/jats:sub>\n                    conversion. Two structurally related nonporous CPs (Cuptz\u20101 and Cuptz\u20102) are constructed from an identical pyridyl tetrazole ligand and different copper precursors, with distinct Cu interatomic distances and local steric environments. With shorter Cu interatomic distances and local steric confinement, Cuptz\u20101 outperforms Cuptz\u20102, reaching 74.4% C\n                    <jats:sub>2<\/jats:sub>\n                    Faradaic efficiency and a partial current density of 310.2\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , both values among the highest reported. Notably, Cuptz\u20101 retains stable performance for over 25\u00a0h at 100\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , whereas Cuptz\u20102 exhibits a slight potential drift after 15\u00a0h. Mechanistic studies reveal that the shorter Cu interatomic distances and steric confinement in Cuptz\u20101 create a short reaction path for C\u2013C coupling intermediates via monodentate adsorption and direct adjacent proton transfer, resulting in a significantly lower rate\u2010determining step barrier than the bidentate adsorption\u2010induced long reaction path on Cuptz\u20102.\n                  <\/jats:p>","DOI":"10.1002\/smll.75592","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T10:00:22Z","timestamp":1788343222000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Steering Cu Interatomic Distances and Local Steric Environment of Nonporous Coordination Polymers Boosts CO\n                    <sub>2<\/sub>\n                    Electroreduction to C\n                    <sub>2<\/sub>\n                    Products"],"prefix":"10.1002","author":[{"given":"Yifeng","family":"Wang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Thorium Energy Shanghai Institute of Applied Physics Chinese Academy of Sciences  Shanghai China"},{"name":"University of Chinese Academy of Sciences  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingtong","family":"Lv","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Thorium Energy Shanghai Institute of Applied Physics Chinese Academy of Sciences  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan","family":"Chen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Thorium Energy Shanghai Institute of Applied Physics Chinese Academy of Sciences  Shanghai 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