_:vb7384890 "(inorganic chemistry) Any compound having four carbonyl groups."@en . _:vb7384891 "2001, Jonathan Franzen, The Corrections:"@en . _:vb7384891 . _:vb7384891 "He had clays and gels of silicate. He had silicone putties. He had slushy ferric salts succumbing to their own deliquescence. Ambivalent acetylacetonates and tetracarbonyls with low melting points."@en . "1" . . _:vb7384890 .