{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T16:38:54Z","timestamp":1791823134411,"version":"4.3.4"},"reference-count":30,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"5857","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Science"],"published-print":{"date-parts":[[2007,12,14]]},"abstract":"<jats:p>\n                    The chemistry of the group 2 metals (beryllium, magnesium, calcium, strontium, and barium) is dominated by the +2 oxidation state. Here, we report the reductions of two magnesium(II) iodide complexes with potassium metal in toluene, leading to thermally stable magnesium(I) compounds, (L)MgMg(L) (where L is [(Ar)NC(NPr\n                    <jats:sup>i<\/jats:sup>\n                    <jats:sub>2<\/jats:sub>\n                    )N(Ar)]\n                    <jats:sup>\u2013<\/jats:sup>\n                    or {[(Ar)NC(Me)]\n                    <jats:sub>2<\/jats:sub>\n                    CH}\n                    <jats:sup>\u2013<\/jats:sup>\n                    , Ar is 2,6-diisopropylphenyl, Me is methyl, and Pr\n                    <jats:sup>i<\/jats:sup>\n                    is isopropyl) in moderate yields. The results of x-ray crystallographic and theoretical studies are consistent with central Mg\n                    <jats:sup>2+<\/jats:sup>\n                    <jats:sub>2<\/jats:sub>\n                    units that have single, covalent magnesium-magnesium bonding interactions with 2.8508 \u00b1 0.0012 (standard deviation) and 2.8457 \u00b1 0.0008 angstrom bond lengths, respectively, and predominantly ionic interactions with the anionic ligands (L).\n                  <\/jats:p>","DOI":"10.1126\/science.1150856","type":"journal-article","created":{"date-parts":[[2007,11,8]],"date-time":"2007-11-08T20:45:29Z","timestamp":1194554729000},"page":"1754-1757","source":"Crossref","is-referenced-by-count":806,"title":["Stable Magnesium(I) Compounds with Mg-Mg Bonds"],"prefix":"10.1126","volume":"318","author":[{"given":"Shaun P.","family":"Green","sequence":"first","affiliation":[{"name":"School of Chemistry, Monash University, Post Office Box 23, Victoria 3800, Australia."},{"name":"School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cameron","family":"Jones","sequence":"additional","affiliation":[{"name":"School of Chemistry, Monash University, Post Office Box 23, Victoria 3800, Australia."},{"name":"School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Stasch","sequence":"additional","affiliation":[{"name":"School of Chemistry, Monash University, Post Office Box 23, Victoria 3800, Australia."},{"name":"School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_1_2_2","unstructured":"W. Kaim B. Schwederski Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life -An Introduction and Guide (Wiley Chichester 1994) chapters 2 and 4."},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1116789"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1101356"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.cplett.2004.11.106"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/om700477b"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200700558"},{"key":"e_1_3_1_8_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp046410h"},{"key":"e_1_3_1_9_2","doi-asserted-by":"publisher","DOI":"10.1071\/CH03006"},{"key":"e_1_3_1_10_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00345a083"},{"key":"e_1_3_1_11_2","doi-asserted-by":"publisher","DOI":"10.1021\/om030633x"},{"key":"e_1_3_1_12_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja057967t"},{"key":"e_1_3_1_13_2","first-page":"3978","year":"2006","unstructured":"S. P. Green, C. Jones, P. C. Junk, K.-A. Lippert, A. Stasch, Chem. Commun.3978 (2006).","journal-title":"Chem. Commun."},{"key":"e_1_3_1_14_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr010424r"},{"key":"e_1_3_1_15_2","unstructured":"Materials and methods are available on Science Online."},{"key":"e_1_3_1_16_2","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3749(200108)627:8<2032::AID-ZAAC2032>3.0.CO;2-6"},{"key":"e_1_3_1_17_2","unstructured":"Crystal data for 1 and 2 were obtained at 123(2) K with use of an Enraf-Nonius Kappa charge-coupled device diffractometer and MoK \u03b1 radiation (\u03bb = 0.71073\u00c5 ). The crystal data are as follows. For 1 : a = b = 18.409(3)\u00c5 c = 17.640(4)\u00c5 tetragonal I 4 1 \/ a Z = 4 R 1 for 3176 [data intensity I >2\u03c3( I )] unique data = 0.0448 and w R 2 (all 4353 unique data) = 0.1256. For 2 : a = 14.444(3)\u00c5 b = 14.203(3)\u00c5 c = 26.742(5)\u00c5 \u03b2 = 94.87(3)\u00b0 monoclinic P 2 1 \/ c Z = 4 R 1 for 9054 [data intensity I >2\u03c3( I )] unique data = 0.0428 and w R 2 (all 11 843 unique data) = 0.1145."},{"key":"e_1_3_1_18_2","unstructured":"As determined from a survey of the Cambridge Crystallographic Database September 2007."},{"key":"e_1_3_1_19_2","first-page":"116","year":"1979","unstructured":"K. P. Huber, G. Herzberg, Constants of Diatomic Molecules (Van Nostrand, New York, 1979), pp. 116 and 394","journal-title":"Constants of Diatomic Molecules"},{"key":"e_1_3_1_20_2","unstructured":"J. Emsley The Elements (Clarendon Oxford ed. 2 1995)."},{"key":"e_1_3_1_21_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00060a030"},{"key":"e_1_3_1_22_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja053819r"},{"key":"e_1_3_1_23_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja042269e"},{"key":"e_1_3_1_24_2","first-page":"376","year":"2002","unstructured":"R. E. Mulveyet al., Chem. Commun.376 (2002).","journal-title":"Chem. Commun."},{"key":"e_1_3_1_25_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic50195a028"},{"key":"e_1_3_1_26_2","unstructured":"M. J. Frisch et al . Gaussian 98 Revision A.10 Gaussian Incorporated Pittsburgh PA (2001)."},{"key":"e_1_3_1_27_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200601926"},{"key":"e_1_3_1_28_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.poly.2004.08.004"},{"key":"e_1_3_1_29_2","unstructured":"A recent precedent for these reactions exists with the insertions of the carbodiimide CyN=C=NCy into the Fe-B bonds of terminal iron borylene complexes e.g. (C 5 H 5 )Fe(CO) 2 (BNCy 2 ) to give ferro-amidinate complexes of boron e.g. [(C 5 H 5 )Fe(CO) 2 C(NCy) 2 ]BNCy 2 . These reactions are thought to proceed via initial N-coordination of the carbodiimide at the borylene center ( 29 )."},{"key":"e_1_3_1_30_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200604838"},{"key":"e_1_3_1_31_2","unstructured":"We are grateful to the Australian Research Council for providing fellowships to C.J. and A.S. We also thank the Engineering and Physical Sciences Research Council of the UK for a partly funded studentship (S.P.G.). Metrical data for (Priso)Mg(\u03bc-I) 2 Mg(OEt 2 )(Priso)\u00b7(hexane) 0.5 1 2 and 5 \u00b7(toluene) 2 are freely available from the Cambridge Crystallographic Database Center (CCDC codes 661565 to 661568)."}],"container-title":["Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.science.org\/doi\/pdf\/10.1126\/science.1150856","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,1,10]],"date-time":"2024-01-10T02:49:51Z","timestamp":1704854991000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.science.org\/doi\/10.1126\/science.1150856"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,12,14]]},"references-count":30,"journal-issue":{"issue":"5857","published-print":{"date-parts":[[2007,12,14]]}},"alternative-id":["10.1126\/science.1150856"],"URL":"https:\/\/doi.org\/10.1126\/science.1150856","relation":{},"ISSN":["0036-8075","1095-9203"],"issn-type":[{"value":"0036-8075","type":"print"},{"value":"1095-9203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2007,12,14]]}}}