{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:06:33Z","timestamp":1760058393993,"version":"build-2065373602"},"reference-count":36,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,4,4]],"date-time":"2025-04-04T00:00:00Z","timestamp":1743724800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["CHE-1900100"],"award-info":[{"award-number":["CHE-1900100"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The synthesis and characterization of the tripodal phosphines RSi(CH2CH2PPh2)3 (R = Me, OMe, OEt) (1\u20133) is described. The 1H NMR spectra of all phosphines display virtual coupling patterns. The ligands form the corresponding trinuclear Pd complexes [RSi(CH2CH2PPh2)3]2(PdCl2)3 (4\u20136) with three PdCl2 moieties sandwiched between two tripodal ligands. The complexes 4, 5, and 7 (R = OH) have been analyzed by single crystal X-ray diffraction. The coordination at the Pd center is square planar with the phosphine groups occupying trans positions. The 31P{1H} MAS NMR spectra of polycrystalline 1 are in accordance with the packing motif of the molecules in the unit cell. The tripodal ligand 3 has successfully been immobilized on silica as 3i. It coordinates PdCl2 on the surface, as demonstrated by 31P{1H} MAS NMR. Hereby, the cis coordination is prevalent when 3i has maximal surface coverage. At low surface coverage, one tripodal linker can accommodate trans coordination at the metal center. A surface-bound trinuclear Pd complex has been generated, as well as a heterobimetallic Pd\/Cu complex. All surface species have been characterized by 31P{1H} MAS NMR.<\/jats:p>","DOI":"10.3390\/molecules30071616","type":"journal-article","created":{"date-parts":[[2025,4,7]],"date-time":"2025-04-07T03:23:07Z","timestamp":1743996187000},"page":"1616","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Molecular and Immobilized Tripodal Phosphine Ligands and Their Trinuclear Palladium Complexes"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5477-8569","authenticated-orcid":false,"given":"Maxwell R.","family":"Kimball","sequence":"first","affiliation":[{"name":"Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyle J.","family":"Cluff","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nattamai","family":"Bhuvanesh","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6557-3518","authenticated-orcid":false,"given":"Janet","family":"Bl\u00fcmel","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2410","DOI":"10.1016\/j.ccr.2008.06.013","article-title":"Linkers and Catalysts Immobilized on Oxide Supports: New Insights by Solid-State NMR Spectroscopy","volume":"252","year":"2008","journal-title":"Coord. 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