{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T01:17:12Z","timestamp":1789780632725,"version":"4.0.1"},"reference-count":54,"publisher":"Wiley","issue":"44","license":[{"start":{"date-parts":[[2015,9,2]],"date-time":"2015-09-02T00:00:00Z","timestamp":1441152000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"crossref"}]},{"name":"DFG"},{"name":"Fonds der Chemischen Industrie"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2015,10,26]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The coordination properties of new types of bidentate phosphane and arsane ligands with a narrow bite angle are reported. The reactions of [{Cp\u2032\u2032\u2032Fe(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>1:1<\/jats:sup>\u2010P<jats:sub>4<\/jats:sub>)] (<jats:bold>1\u2009a<\/jats:bold>) with the copper salt [Cu(CH<jats:sub>3<\/jats:sub>CN)<jats:sub>4<\/jats:sub>][BF<jats:sub>4<\/jats:sub>] leads, depending on the stoichiometry, to the formation of the spiro compound [{{Cp\u2032\u2032\u2032Fe(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>(\u03bc<jats:sub>3<\/jats:sub>,\u03b7<jats:sup>1:1:1:1<\/jats:sup>\u2010P<jats:sub>4<\/jats:sub>)}<jats:sub>2<\/jats:sub>Cu]<jats:sup>+<\/jats:sup>[BF<jats:sub>4<\/jats:sub>]<jats:sup>\u2212<\/jats:sup> (<jats:bold>2<\/jats:bold>) or the monoadduct [{Cp\u2032\u2032\u2032Fe(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>(\u03bc<jats:sub>3<\/jats:sub>,\u03b7<jats:sup>1:1:2<\/jats:sup>\u2010P<jats:sub>4<\/jats:sub>){Cu(MeCN)}]<jats:sup>+<\/jats:sup>[BF<jats:sub>4<\/jats:sub>]<jats:sup>\u2212<\/jats:sup> (<jats:bold>3<\/jats:bold>). Similarly, the arsane ligand [{Cp\u2032\u2032\u2032Fe(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>1:1<\/jats:sup>\u2010As<jats:sub>4<\/jats:sub>)] (<jats:bold>1\u2009b<\/jats:bold>) reacts with [Cu(CH<jats:sub>3<\/jats:sub>CN)<jats:sub>4<\/jats:sub>][BF<jats:sub>4<\/jats:sub>] to give [{{Cp\u2032\u2032\u2032Fe(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>(\u03bc<jats:sub>3<\/jats:sub>,\u03b7<jats:sup>1:1:1:1<\/jats:sup>\u2010As<jats:sub>4<\/jats:sub>)}<jats:sub>2<\/jats:sub>Cu]<jats:sup>+<\/jats:sup>[BF<jats:sub>4<\/jats:sub>]<jats:sup>\u2212<\/jats:sup> (<jats:bold>5<\/jats:bold>). Protonation of <jats:bold>1\u2009a<\/jats:bold> occurs at the \u201cwing tip\u201d phosphorus atoms, which is in line with the results of DFT calculations. The compounds are characterized by spectroscopic methods (heteronuclear NMR spectroscopy and IR spectrometry) and by single\u2010crystal X\u2010ray diffraction studies.<\/jats:p>","DOI":"10.1002\/anie.201506784","type":"journal-article","created":{"date-parts":[[2015,9,2]],"date-time":"2015-09-02T21:12:06Z","timestamp":1441228326000},"page":"13116-13121","source":"Crossref","is-referenced-by-count":39,"title":["E<sub>4<\/sub> Butterfly Complexes (E=P, As) as Chelating Ligands"],"prefix":"10.1002","volume":"54","author":[{"given":"Christoph","family":"Schwarzmaier","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastian","family":"Heinl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G\u00e1bor","family":"Bal\u00e1zs","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manfred","family":"Scheer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,9,2]]},"reference":[{"key":"e_1_2_4_1_2","unstructured":"\u00a0"},{"key":"e_1_2_4_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr9003709"},{"key":"e_1_2_4_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr900349u"},{"key":"e_1_2_4_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr100010e"},{"key":"e_1_2_4_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2010.12.016"},{"key":"e_1_2_4_6_2","doi-asserted-by":"publisher","DOI":"10.1039\/c2cc17449a"},{"key":"e_1_2_4_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.198203301"},{"key":"e_1_2_4_7_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.19820940503"},{"key":"e_1_2_4_8_2","unstructured":"\u00a0"},{"key":"e_1_2_4_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200700715"},{"key":"e_1_2_4_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200401117"},{"key":"e_1_2_4_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200704015"},{"key":"e_1_2_4_11_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200704015"},{"key":"e_1_2_4_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201103046"},{"key":"e_1_2_4_12_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201103046"},{"key":"e_1_2_4_13_2","unstructured":"\u00a0"},{"key":"e_1_2_4_14_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1081119"},{"key":"e_1_2_4_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.200500616"},{"key":"e_1_2_4_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja075926m"},{"key":"e_1_2_4_17_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200900342"},{"key":"e_1_2_4_17_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200900342"},{"key":"e_1_2_4_18_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201103141"},{"key":"e_1_2_4_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201102107"},{"key":"e_1_2_4_20_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201407120"},{"key":"e_1_2_4_20_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201407120"},{"key":"e_1_2_4_21_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201500692"},{"key":"e_1_2_4_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ica.2014.05.044"},{"key":"e_1_2_4_23_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201306146"},{"key":"e_1_2_4_23_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201306146"},{"key":"e_1_2_4_24_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.201301361"},{"key":"e_1_2_4_25_2","unstructured":"\u00a0"},{"key":"e_1_2_4_26_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201405879"},{"key":"e_1_2_4_26_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201405879"},{"key":"e_1_2_4_27_2","doi-asserted-by":"publisher","DOI":"10.1039\/c0dt01045f"},{"key":"e_1_2_4_28_2","doi-asserted-by":"publisher","DOI":"10.1002\/zaac.19966220606"},{"key":"e_1_2_4_29_2","unstructured":"\u00a0"},{"key":"e_1_2_4_30_2","doi-asserted-by":"publisher","DOI":"10.1021\/om9801148"},{"key":"e_1_2_4_31_2","doi-asserted-by":"publisher","DOI":"10.1039\/C4SC01213E"},{"key":"e_1_2_4_32_2","unstructured":"\u00a0"},{"key":"e_1_2_4_33_2","unstructured":"T. Hilt Ph.D. thesis university of Kaiserslautern (Kaiserslautern) 1999;"},{"key":"e_1_2_4_34_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201404653"},{"key":"e_1_2_4_34_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201404653"},{"key":"e_1_2_4_35_2","unstructured":"\u00a0"},{"key":"e_1_2_4_36_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200500194"},{"key":"e_1_2_4_36_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200500194"},{"key":"e_1_2_4_37_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3773(20000417)39:8<1425::AID-ANIE1425>3.0.CO;2-1"},{"key":"e_1_2_4_37_3","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-3757(20000417)112:8<1483::AID-ANGE1483>3.0.CO;2-T"},{"key":"e_1_2_4_38_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1099-0682(199905)1999:5<777::AID-EJIC777>3.0.CO;2-A"},{"key":"e_1_2_4_39_2","doi-asserted-by":"publisher","DOI":"10.1039\/B707398D"},{"key":"e_1_2_4_40_2","doi-asserted-by":"publisher","DOI":"10.1039\/qr9581200265"},{"key":"e_1_2_4_41_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic50110a019"},{"key":"e_1_2_4_42_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic00290a026"},{"key":"e_1_2_4_43_2","doi-asserted-by":"publisher","DOI":"10.1039\/DT9810000962"},{"key":"e_1_2_4_44_2","unstructured":"CCDC\u20051411084\u2005(2) 1411085\u2005(3) and 1411086\u2005(5) contain the supplementary crystallographic data for this paper. These data are provided free of charge byThe Cambridge Crystallographic Data Centre."}],"container-title":["Angewandte Chemie International Edition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fanie.201506784","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.201506784","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/anie.201506784","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.201506784","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T11:38:42Z","timestamp":1693309122000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/anie.201506784"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,9,2]]},"references-count":54,"journal-issue":{"issue":"44","published-print":{"date-parts":[[2015,10,26]]}},"alternative-id":["10.1002\/anie.201506784"],"URL":"https:\/\/doi.org\/10.1002\/anie.201506784","archive":["Portico"],"relation":{},"ISSN":["1433-7851","1521-3773"],"issn-type":[{"value":"1433-7851","type":"print"},{"value":"1521-3773","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,9,2]]}}}