| 词条 | NacNac |
| 释义 |
Preparation of ligands and complexesAcetylacetone and related 1,3-diketones condense with primary alkyl- or arylamines resulting in replacement of the carbonyl oxygen atoms with NR groups, where R = aryl, alkyl. To prepare 1,3-diketimines from bulky amines, e.g. 2,4,6-trimethylanilines, prolonged reaction times are required. 2,6-Diisopropylaniline is a common bulky building block. Deprotonation of HNacNac compounds affords anionic bidentate ligands that form a variety of coordination complexes.[2] Some derivatives with large R groups can be used to stabilize low valent main group and transition metal complexes.[3] Unlike the situation for the acetylacetonates, the steric properties of the coordinating atoms in NacNac− ligands is adjustable by changes in the R substituent. Attachment to a metal center is usually carried out by initial deprotonation of HNacNac with n-butyllithium; the lithium derivative is then treated with a metal chloride to eliminate LiCl. In some cases, HNacNacs also serve as charge-neutral 1,3-diimine ligands. Related NacNac ligandsNacNac ligands are diimine analogues of acetylacetonate ligands. An intermediate class of ligands are derived from monoimino-ketones.[5][6] See also
References1. ^{{cite journal|first1=D. J.|last1=Mindiola |first2=P. L.|last2=Holland|first3=T. H. |last3=Warren |title=Complexes of Bulky β-Diketiminate Ligands |journal=Inorg. Synth. |date=2010 |volume=35 |pages=1–55 |DOI=10.1002/9780470651568.ch1}} 2. ^{{cite journal |last1=Bourget-Merle |first1=L. |last2=Lappert|first2=M. F. |last3=Severn |first3=J. R. |title= The Chemistry of Diketiminatometal Complexes |journal= Chemical Reviews |year= 2002 |volume= 102 |pages= 3031–3066 |doi= 10.1021/cr010424r}} 3. ^{{cite journal |last1= Qian|first1= B.|last2= Ward|first2= D. L.|last3= Smith|first3= M.R. |title= Synthesis, Structure, and Reactivity of β-Diketiminato Aluminum Complexes |journal= Organometallics |year= 1998 |volume= 17 |pages= 3070–3076 |doi= 10.1021/om970886o }} 4. ^{{cite journal|authors=Hartmann, N.J.; Wu, G.; Hayton, T. W.|year=2015|title=Synthesis of a "Masked" Terminal Nickel(II) Sulfide by Reductive Deprotection and its Reaction with Nitrous Oxide|journal=Angew. Chem. Int. Ed. Engl.|volume=54|pages=14956-9|doi=10.1002/anie.201508232|pmc=4715500}} 5. ^1 {{cite journal|first=Birgit |last=Weber |first2=Ernst-G. |last2=Jäger |title=Structure and Magnetic Properties of Iron(II/III) Complexes with {{chem|N|2|O|2|2–}}-Coordinating Schiff Base-Like Ligands|journal= Eur. J. Inorg. Chem. |date=2009| page= 455 |DOI=10.1002/ejic.200990003}} 6. ^{{cite journal|first1=Dennis P. |last1=Riley |first2=Daryle H. |last2=Busch |title=Macrocyclic Tetraazatetraenato Ligands and their Metal Complexes |journal=Inorg. Synth. |date=1978 |volume=18 |page=36 |DOI=10.1002/9780470132494.ch7}} 2 : Ligands|Coordination chemistry |
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