{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T20:27:26Z","timestamp":1790281646985,"version":"4.1.0"},"reference-count":83,"publisher":"Wiley","issue":"43","license":[{"start":{"date-parts":[[2021,9,17]],"date-time":"2021-09-17T00:00:00Z","timestamp":1631836800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2021,10,18]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Two homoleptic copper(II) complexes [Cu(L1)<jats:sub>2<\/jats:sub>] and [Cu(L2)<jats:sub>2<\/jats:sub>] with anionic redox\u2010active ligands were synthesised, one with urea azine (L1) and the other with thio\u2010urea azine (L2) ligands. One\u2010electron oxidation of the complexes initiates an unprecedented redox\u2010induced electron transfer process, leading to monocationic copper(I) complexes [Cu(L1)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> and [Cu(L2)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> with two oxidised ligands. While [Cu(L1)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> is best described as a Cu<jats:sup>I<\/jats:sup> complex with two neutral radical ligands that couple antiferromagnetically, [Cu(L2)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> is a Cu<jats:sup>I<\/jats:sup> complex with two clearly different ligand units in the solid state and with a magnetic susceptibility close to a diamagnetic compound. Further one\u2010electron oxidation of the complex with L1 ligands results in a dication [Cu(L1)<jats:sub>2<\/jats:sub>]<jats:sup>2+<\/jats:sup>, best described as a Cu<jats:sup>I<\/jats:sup> complex with a twofold oxidised, monocationic ligand and a neutral radical ligand. The stability in at least three redox states, the accumulation of spin density at the ligands and the facile ligand\u2010metal electron transfer make these complexes highly attractive for a variety of applications; here the catalytic aerobic oxidation of alcohols to aldehydes is tested.<\/jats:p>","DOI":"10.1002\/anie.202109367","type":"journal-article","created":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T08:14:49Z","timestamp":1629706489000},"page":"23451-23462","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["A Copper(I) Complex with Two Unpaired Electrons, Synthesised by Oxidation of a Copper(II) Complex with Two Redox\u2010Active Ligands"],"prefix":"10.1002","volume":"60","author":[{"given":"Marco","family":"Werr","sequence":"first","affiliation":[{"name":"Anorganisch-Chemisches Institut Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 270 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisabeth","family":"Kaifer","sequence":"additional","affiliation":[{"name":"Anorganisch-Chemisches Institut Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 270 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Markus","family":"Enders","sequence":"additional","affiliation":[{"name":"Anorganisch-Chemisches Institut Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 270 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andika","family":"Asyuda","sequence":"additional","affiliation":[{"name":"Angewandte Physikalische Chemie Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 253 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Zharnikov","sequence":"additional","affiliation":[{"name":"Angewandte Physikalische Chemie Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 253 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8111-3047","authenticated-orcid":false,"given":"Hans\u2010J\u00f6rg","family":"Himmel","sequence":"additional","affiliation":[{"name":"Anorganisch-Chemisches Institut Ruprecht-Karls Universit\u00e4t Heidelberg  Im Neuenheimer Feld 270 69120 Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9,17]]},"reference":[{"key":"e_1_2_6_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201006778"},{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201006778"},{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201100752"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5CS00161G"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CS00914H"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacsau.1c00224"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/cctc.201600616"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201301487"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201301487"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201802606"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja067208q"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja900909u"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200705138"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200705138"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201602402"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202101423"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202101423"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.3762\/bjoc.16.77"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201704049"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/zaac.201200496"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ica.2017.07.069"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3773(19980316)37:5<616::AID-ANIE616>3.0.CO;2-4"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3757(19980302)110:5<637::AID-ANGE637>3.0.CO;2-8"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3773(19990419)38:8<1095::AID-ANIE1095>3.0.CO;2-I"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3757(19990419)111:8<1165::AID-ANGE1165>3.0.CO;2-X"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja991481t"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molcatb.2015.06.006"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2012.06.003"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja035837j"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3dt00004d"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201402687"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201001040"},{"key":"e_1_2_6_26_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201001040"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic702256p"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.1039\/C4CC04487H"},{"key":"e_1_2_6_29_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5SC03636D"},{"key":"e_1_2_6_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201605132"},{"key":"e_1_2_6_30_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201605132"},{"key":"e_1_2_6_31_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201500228"},{"key":"e_1_2_6_32_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201902216"},{"key":"e_1_2_6_33_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201605971"},{"key":"e_1_2_6_34_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202100979"},{"key":"e_1_2_6_34_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202100979"},{"key":"e_1_2_6_35_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201000775"},{"key":"e_1_2_6_36_1","unstructured":"Deposition Numbers\u20052092840 (for L1H) 2092838 (for [Cu(L1)2]) 2092843 (for [Cu(L2)2]) 2092839 (for [Zn(L1)2]) 2092841 (for [Cu(L1)2]SbF6) 2092844 (for [Cu(L2)2]SbF6) and 2092842 (for [Cu(L1)2](PF6)2) contain the supplementary crystallographic data for this paper. These data are provided free of charge by the joint Cambridge Crystallographic Data Centre and Fachinformationszentrum KarlsruheAccess Structures service."},{"key":"e_1_2_6_37_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201000007"},{"key":"e_1_2_6_38_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.elspec.2019.06.010"},{"key":"e_1_2_6_39_1","doi-asserted-by":"publisher","DOI":"10.1515\/znb-1979-0721"},{"key":"e_1_2_6_40_1","doi-asserted-by":"publisher","DOI":"10.1134\/S0022476616060093"},{"key":"e_1_2_6_41_1","unstructured":"\u00a0"},{"key":"e_1_2_6_42_2","volume-title":"NMR of Paramagnetic Molecules: Principles and Applications","author":"La Mar G. N.","year":"1973"},{"key":"e_1_2_6_43_2","volume-title":"NMR of Paramagnetic Molecules (Second Edition)","author":"Bertini I.","year":"2017"},{"key":"e_1_2_6_44_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.pnmrs.2018.05.001"},{"key":"e_1_2_6_45_1","unstructured":"\u00a0"},{"key":"e_1_2_6_46_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic980332t"},{"key":"e_1_2_6_47_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic402016m"},{"key":"e_1_2_6_48_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja01052a005"},{"key":"e_1_2_6_49_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201501944"},{"key":"e_1_2_6_50_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic048624j"},{"key":"e_1_2_6_51_2","doi-asserted-by":"publisher","DOI":"10.1139\/V09-045"},{"key":"e_1_2_6_52_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic102420x"},{"key":"e_1_2_6_53_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201204294"},{"key":"e_1_2_6_54_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5b02614"},{"key":"e_1_2_6_55_1","unstructured":"\u00a0"},{"key":"e_1_2_6_56_2","volume-title":"NMR of Paramagnetic Molecules (Second Edition)","author":"Bertini I.","year":"2017"},{"key":"e_1_2_6_57_2","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1007\/BFb0058197","volume-title":"Bioinorganic Chemistry, Vol.\u200572","author":"Banci L.","year":"1990"},{"key":"e_1_2_6_58_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic990003g"},{"key":"e_1_2_6_59_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.199406701"},{"key":"e_1_2_6_59_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.19941060618"},{"key":"e_1_2_6_60_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja961675y"},{"key":"e_1_2_6_61_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic981424l"},{"key":"e_1_2_6_62_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-8545(99)00243-X"},{"key":"e_1_2_6_63_1","doi-asserted-by":"publisher","DOI":"10.1039\/a908563g"},{"key":"e_1_2_6_64_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic1011764"},{"key":"e_1_2_6_65_1","unstructured":"\u00a0"},{"key":"e_1_2_6_66_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.279.5350.537"},{"key":"e_1_2_6_67_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3773(19980904)37:16<2217::AID-ANIE2217>3.0.CO;2-D"},{"key":"e_1_2_6_67_3","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3757(19980817)110:16<2340::AID-ANGE2340>3.0.CO;2-C"},{"key":"e_1_2_6_68_2","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3773(20020816)41:16<3047::AID-ANIE3047>3.0.CO;2-W"},{"key":"e_1_2_6_68_3","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3757(20020816)114:16<3173::AID-ANGE3173>3.0.CO;2-5"},{"key":"e_1_2_6_69_2","doi-asserted-by":"publisher","DOI":"10.1039\/B403953J"},{"key":"e_1_2_6_70_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic8009767"},{"key":"e_1_2_6_71_2","doi-asserted-by":"publisher","DOI":"10.1039\/c2dt31134h"}],"container-title":["Angewandte Chemie International Edition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.202109367","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/anie.202109367","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.202109367","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,20]],"date-time":"2023-08-20T17:18:36Z","timestamp":1692551916000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/anie.202109367"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9,17]]},"references-count":83,"journal-issue":{"issue":"43","published-print":{"date-parts":[[2021,10,18]]}},"alternative-id":["10.1002\/anie.202109367"],"URL":"https:\/\/doi.org\/10.1002\/anie.202109367","archive":["Portico"],"relation":{},"ISSN":["1433-7851","1521-3773"],"issn-type":[{"value":"1433-7851","type":"print"},{"value":"1521-3773","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,9,17]]},"assertion":[{"value":"2021-07-14","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-09-17","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}