{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T22:01:23Z","timestamp":1792101683265,"version":"4.4.0"},"reference-count":19,"publisher":"American Chemical Society (ACS)","issue":"19","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Am. Chem. Soc."],"published-print":{"date-parts":[[2007,5,1]]},"DOI":"10.1021\/ja0710860","type":"journal-article","created":{"date-parts":[[2007,4,20]],"date-time":"2007-04-20T11:02:33Z","timestamp":1177066953000},"page":"6076-6077","source":"Crossref","is-referenced-by-count":68,"title":["Monomeric, Two-Coordinate, Univalent Chromium(I) Compounds:\u2009 Steric Prevention of Metal\u2212Metal Bond Formation"],"prefix":"10.1021","volume":"129","author":[{"given":"Robert","family":"Wolf","sequence":"first","affiliation":[{"name":"Department of Chemistry, University of California, Davis, California 95616, and Department of Chemistry, University of MissouriRolla, Rolla, Missouri 65409-0010"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcin","family":"Brynda","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of California, Davis, California 95616, and Department of Chemistry, University of MissouriRolla, Rolla, Missouri 65409-0010"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengbao","family":"Ni","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of California, Davis, California 95616, and Department of Chemistry, University of MissouriRolla, Rolla, Missouri 65409-0010"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gary J.","family":"Long","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of California, Davis, California 95616, and Department of Chemistry, University of MissouriRolla, Rolla, Missouri 65409-0010"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip P.","family":"Power","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of California, Davis, California 95616, and Department of Chemistry, University of MissouriRolla, Rolla, Missouri 65409-0010"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2007,4,20]]},"reference":[{"key":"ja0710860b00001\/ja0710860b00001_1","doi-asserted-by":"crossref","first-page":"1905","DOI":"10.1002\/cber.19210540821","volume":"54","author":"Hein F.","year":"1918","journal-title":"Ber. Dtsch. Chem. Ges."},{"key":"ja0710860b00002\/ja0710860b00002_1","doi-asserted-by":"crossref","first-page":"1520","DOI":"10.1021\/om0201056","volume":"21","author":"Seyferth D.","year":"2002","journal-title":"Organometallics"},{"key":"ja0710860b00003\/ja0710860b00003_1","doi-asserted-by":"crossref","first-page":"140","DOI":"10.1515\/znb-1955-0303","volume":"10","author":"Fischer E. O.","year":"1955","journal-title":"Z. Naturforsch."},{"key":"ja0710860b00003\/ja0710860b00003_2","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1002\/zaac.19562860306","volume":"286","author":"Fischer E. O.","year":"1956","journal-title":"Z. Anorg. Allg. Chem."},{"key":"ja0710860b00004\/ja0710860b00004_1","first-page":"1054","volume-title":"Comprehensive Organometallic Chemistry","volume":"3","author":"Davis R.","year":"1982"},{"key":"ja0710860b00004\/ja0710860b00004_2","first-page":"549","volume-title":"Comprehensive Organometallic Chemistry II","volume":"5","author":"Morris M.","year":"1995"},{"key":"ja0710860b00005\/ja0710860b00005_1","doi-asserted-by":"crossref","first-page":"844","DOI":"10.1126\/science.1116789","volume":"310","author":"Nguyen T.","year":"2005","journal-title":"Science"},{"key":"ja0710860b00006\/ja0710860b00006_1","doi-asserted-by":"crossref","first-page":"3888","DOI":"10.1002\/ange.200600110","volume":"118","author":"Brynda M.","year":"2006","journal-title":"Angew. Chem."},{"key":"ja0710860b00006\/ja0710860b00006_2","doi-asserted-by":"crossref","first-page":"3072","DOI":"10.1002\/ange.200504322","volume":"118","author":"Radius U.","year":"2006","journal-title":"Angew. Chem."},{"key":"ja0710860b00007\/ja0710860b00007_1","doi-asserted-by":"crossref","first-page":"2540","DOI":"10.1016\/j.jorganchem.2006.01.046","volume":"691","author":"Stanciu C.","year":"2006","journal-title":"J. Organomet. Chem."},{"key":"ja0710860b00008\/ja0710860b00008_1","volume-title":"Chem","author":"Sutton A. D."},{"key":"ja0710860b00009\/ja0710860b00009_1","unstructured":"[(3,5-iPr2-Ar*)Cr(THF)] (2):\u2009 Under anaerobic and anhydrous conditions, a blue solution of (3,5-iPr2-Ar*)CrCl (0.95 g, 1.46 mmol), prepared analogously to [Ar\u2018CrCl]28from (3,5-iPr2-Ar*)Li6aand CrCl2(THF)2, in ca. 30 mL of THF, was added to a suspension of KC8(0.25 g, 1.8 mmol) at 0 \u00b0C in ca. 10 mL of THF. A dark, yellow-orange suspension formed immediately on addition. After stirring for ca. 24 h, the solvent was evaporated completely, and the dark residue was extracted with ca. 60 mL of hexanes. The dark-orange extract was concentrated to ca. 2 mL. Storage at \u221220 \u00b0C for several days gave large, orange crystals of2\u00b7n-hexane. Yield:\u2009 0.22 g [20%]. Mp 117\u2212119 \u00b0C (black oil).1H NMR (300.08 MHz, C6D6, 21 \u00b0C):\u2009 \u03b4 = 0.5\u22124 (br), 0.8\u22121.4 (overlapping m,n-hexane), 1.42 (br s, CH2-CH2O of THF), 3.59 (br s, CH2-CH2O of THF). IR (Nujol) \u03bd (cm-1):\u2009 1763 (w), 1724 (w), 1604 (m), 1561 (m), 1361 (s), 1311 (s), 1165 (m), 1083 (s), 1069 (s), 1051 (s), 943 (w), 917 (w), 875 (s), 643 (m). UV\/vis (hexanes; \u03bbmax, nm {\u03b5, L\u00b7mol-1\u00b7cm-1}):\u2009 430 (1140), 628 (400). \u03bceff= 5.96 \u03bcB. [(3,5-iPr2-Ar*)Cr(PMe3)] (3):\u2009 A cooled, deep blue solution of (3,5-iPr2-Ar*)CrCl (0.95 g, 1.46 mmol) and PMe3(0.5 mL, 4.8 mmol) in ca. 40 mL of THF was added to a stirred suspension of KC8(0.25 g, 1.8 mmol) at 0 \u00b0C in ca. 10 mL of THF. The mixture assumed a deep orange color upon stirring overnight. The solvent was evaporated, and the dark residue was extracted with 60 mL of hexanes. Concentration of the dark-orange extract to ca. 5 mL and subsequent storage at \u221220 \u00b0C for 2 days gave orange-red crystals of3. Yield:\u2009 0.20 g [17%]. Mp 140\u2212141 \u00b0C (black oil).1H NMR (300.08 MHz, C6D6, 21 \u00b0C):\u2009 \u03b4 = \u22121 to 4 (br), 1.23 (br d,2JPH= 33 Hz), 6.5 to 10 (br).31P{1H} NMR (121.5 MHz, C6D6, 21 \u00b0C):\u2009 \u03b4 = 34.3 (s). IR (Nujol) \u03bd (cm-1):\u2009 1761 (w), 1749 (w), 1602 (m), 1560 (m), 1421 (m), 1381 (m), 1309 (m), 1291 (m), 1283 (m), 1076 (s), 1048 (s), 952 (m), 876 (m), 664 (w), 653 (w), 469 (w). UV\/vis (hexanes; \u03bbmax, nm {\u03b5, L\u00b7mol-1\u00b7cm-1}):\u2009 442 (1000), ca. 500 (shoulder). \u03bceff= 6.17 \u03bcB."},{"key":"ja0710860b00010\/ja0710860b00010_1","unstructured":"Crystal data for2\u00b7n-hexane and3\u00b7n-hexane at 90 K with Mo K\u03b1 (\u03bb = 0.71073 \u00c5).2\u00b7n-Hexane:\u2009a= 9.7312(9) \u00c5,b= 27.140(2) \u00c5,c= 18.507(2) \u00c5, \u03b2 = 90.610(1)\u00b0,V= 4887.5(8) \u00c53,M= 776.18 g\u00b7mol-1, monoclinic, space groupP21\/c,Z= 4,R1 = 0.0668 (I> 2\u03c3(I) data),wR2 = 0.1877 for all 8795 data.3\u00b7n-Hexane:\u2009a= 9.414(2) \u00c5,b= 18.655(3) \u00c5,c= 28.054(4) \u00c5, \u03b2 = 98.097(2)\u00b0,V= 4878(2) \u00c53,M= 780.15 g\u00b7mol-1, monoclinic, space groupP21\/c,Z= 4,R1 = 0.0434 (I> 2\u03c3(I) data),wR2 = 0.1417 for all 12074 data."},{"key":"ja0710860b00011\/ja0710860b00011_1","unstructured":"The Cr\u2212O distances of 88 Cr\u2212THF complexes in the Cambridge Crystal Structure Database (version 5.27, Aug 2006) range from 1.994 to 2.449 \u00c5, median 2.097 \u00c5."},{"key":"ja0710860b00012\/ja0710860b00012_1","unstructured":"The Cr\u2212P distances of 53 Cr\u2212PMe3complexes in the Cambridge Crystal Structure Database (version 5.27, Aug 2006) range from 2.288 to 2.525 \u00c5, median 2.383 \u00c5."},{"key":"ja0710860b00013\/ja0710860b00013_1","volume-title":"Gaussian 03, revision A.1","author":"Frisch M. J.","year":"2003"},{"key":"ja0710860b00017\/ja0710860b00017_1","first-page":"325","volume":"102","author":"For","year":"1989","journal-title":"Angew. Chem."},{"key":"ja0710860b00018\/ja0710860b00018_1","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1080\/02603598908035794","volume":"8","author":"Power P. P.","year":"1989","journal-title":"Comments Inorg. Chem."},{"key":"ja0710860b00019\/ja0710860b00019_1","unstructured":"Pauling, L.The Nature of the Chemical Bond, 3rd ed.; Cornell University Press:\u2009 Ithaca, New York, 1960; p 172f."}],"container-title":["Journal of the American Chemical Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/ja0710860","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,9,22]],"date-time":"2021-09-22T22:39:47Z","timestamp":1632350387000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/doi\/10.1021\/ja0710860"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,4,20]]},"references-count":19,"journal-issue":{"issue":"19","published-print":{"date-parts":[[2007,5,1]]}},"alternative-id":["10.1021\/ja0710860"],"URL":"https:\/\/doi.org\/10.1021\/ja0710860","relation":{},"ISSN":["0002-7863","1520-5126"],"issn-type":[{"value":"0002-7863","type":"print"},{"value":"1520-5126","type":"electronic"}],"subject":[],"published":{"date-parts":[[2007,4,20]]}}}