{"id":19876,"date":"2019-06-25T14:24:31","date_gmt":"2019-06-25T12:24:31","guid":{"rendered":"http:\/\/karmaka.de\/?p=19876"},"modified":"2019-06-25T14:30:03","modified_gmt":"2019-06-25T12:30:03","slug":"organometallic-compounds-as-carriers-of-extraterrestrial-cyanide-in-primitive-meteorites","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=19876","title":{"rendered":"Organometallic compounds as carriers of extraterrestrial cyanide in primitive meteorites<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Karen E. Smith, Christopher H. House, Ricardo D. Arevalo Jr., Jason P. Dworkin &amp; Michael P. Callahan<\/p>\n\n\n\n<p>Nature Communications 10, 1\u20137<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-019-10866-x\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br>\n<a href=\"https:\/\/www.nature.com\/articles\/s41467-019-10866-x.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Extraterrestrial delivery of cyanide may have been crucial for the origin of life on Earth since cyanide is involved in the abiotic synthesis of numerous organic compounds found in extant life; however, little is known about the abundance and species of cyanide present in meteorites. Here, we report cyanide abundance in a set of CM chondrites ranging from 50\u2009\u00b1\u20091 to 2472\u2009\u00b1\u200938 nmol\u00b7g\u22121, which relates to the degree of aqueous alteration of the meteorite and indicates that parent body processing influenced cyanide abundance. Analysis of the Lewis Cliff 85311 meteorite shows that its releasable cyanide is primarily in the form of [FeII(CN)5(CO)]3\u2212 and [FeII(CN)4(CO)2]2\u2212. Meteoritic delivery of iron cyanocarbonyl complexes to early Earth likely provided an important point source of free cyanide. Iron cyanocarbonyl complexes may have served as precursors to the unusual FeII(CN)(CO) moieties that form the catalytic centers of hydrogenases, which are thought to be among the earliest enzymes.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Karen E. Smith, Christopher H. House, Ricardo D. Arevalo Jr., Jason P. Dworkin &amp; Michael P. Callahan Nature Communications 10, 1\u20137 LINK (OPEN ACCESS) PDF (OPEN ACCESS) &#8220;Extraterrestrial delivery of cyanide may have been crucial&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61,9,18,576],"tags":[3979,1463,2935,2795,5067,1842,3273,105,1224,5063,4787,3986,513,515,5064,5066,4623,5065,107,5068],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19876"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19876"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19876\/revisions"}],"predecessor-version":[{"id":19877,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19876\/revisions\/19877"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}