- The first cyanomethyl complex of gold, synthesized by reaction of a Au I complex with acetonitrile in the presence of a new guanidine N-superbase
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Herein we report on the synthesis of the new strong N-base and electron donor tdmegb [1,2,4,5-tetrakis(N,N′-dimethylethyleneguanidino)benzene]. Compared to the previously synthesized ttmgb [1,2,4,5- tetrakis(tetramethylguanidino)benzene], this compound turned out to be a slightly better electron donor and a slightly weaker base. In experiments in which [AuCl(PPH3)] was dissolved in CH3CN together with tdmegb, we observed the formation of the first cyanomethyl complex of Au, namely [Au(CH2CN)(PPh3)] in good yield. This reaction does not take place for ttmgb. Moreover, in CH2Cl2 solutions containing the three components [AuCl(PPh3)], tdmegb and a nitrile (in large excess), only AuI reduction leading to a [Au 11Cl3(PPh3)7] cluster is observed. Possible reaction mechanisms for this unusual reaction are discussed. The first cyanomethyl complex of gold, synthesized by reaction between an AuI complex and acetonitrile in the presence of a new guanidine N-superbase C-H bond activation of acetonitrile by AuI in combination with a newly designed nitrogen base leads to the first structurally characterized (cyanomethyl)gold complex.
- Emeljanenko, Dimitri,Peters, Anastasia,Vitske, Viktoriia,Kaifer, Elisabeth,Himmel, Hans-Joerg
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- ELECTRONIC DEVICE AND COMPOUND
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The invention relates to an electronic device comprising a compound having Formula (1): ABX (1), wherein A is a structural moiety that consists of at least two atoms and comprises a conjugated system of delocalized electrons, each B is independently selected from an imine functional group (la), wherein R1, R2, R3, R4 are independently selected from C1-C30 alkyl, C2-C30 alkenyl, C2-C3 alkinyl, C3-C30 cycloalkyl, C6-C30 aryl, C2-C30 heteroaryl, C7-C30 arylalkyl, C3-C30 heteroarylalkyl, the wave line represents a covalent bond to the imine nitrogen atom, G is in each group (la) independently selected from a quarternary carbon atom and from a cyclopropenylidene structural moiety, x is an integer equal one or higher, preferably equal two or higher, and the lone electron pair of the imine nitrogen atom and/or the pi-electrons of the imine double bond of at least one group B is conjugated with the conjugated system of delocalized electrons comprised in the structural moiety A, with the proviso that two or more of the substituents R1, R2, R3, R4 may be connected to form a ring that may contain also unsaturation and, if any of the substituents R1, R2, R3, R4 comprises two or more carbon atoms, up to one third of the overall count of the carbon atoms in the substituent or in any ring formed by two connected substituents can be replaced with heteroatoms independently selected from O, S, N and B as well as to an electrically semiconducting material and a compound for use in the electronic device.
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(2016/01/25)
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