The first synthesis of pure tert-butyl-substituted (phthalocy-3-chloropyridine, ammonia) is described. The compounds aninato)-and (2,3-naphthalocyaninato)ruthenium [ ( ~B u )~-were characterized by UV/Vis, IR, and NMR measurements. MacRu] by thermal decomposition of (tBu)4MacRu(L)2 (L = Some years ago, we reported on the synthesis of pure (phthalocyaninato)ruthenium(II) (PcRu) by thermal decomposition of PcRu(DMSO)~ . 2 DMSO['l. Later, we developed a more convenient method for the preparation of pure PcRu via the corresponding bisisoquinoline complex PcRu(iqnl)2[2], which is readily available and can be thermally decomposed at 250°C with formation of pure PcRur3]. Recently, we also prepared (2,3-naphthalocyaninato)ruthenium(II) (2,3-NcRu) by thermal decomposition of the monomeric complex ~,Ruthenium complexes of the type MacRu(L)2 and [MacRu(L)], [Mac = Pc, 2,3-Nc; L = e.g. pyrazine (pyz), tetrazine (tz), or 1,4-diisocyanobenzene (dib)] are more stable than the well-studied iron complexes toward oxidation of the central metal atom. They show an increased stability due to the larger radius of the ruthenium ion.By peripheral attachment of bulky (e.g. tert-butyl) or long-chain groups (e.g. alkyl or alkoxy) to the macrocycles, transition metal phthalocyanine complexes RxPcM(L)2 and their bridged systems [R,PcM(L)], can be made soluble in common organic solvents, e.g. chloroform or t~l u e n e [~,~] . The tert-butyl group is especially suitable to increase the solubility of phthalocyanines in organic solvents [6]. Several attempts to prepare (tetra-tert-butylphtha1ocyaninato)ruthenium(I1) (tBu)4PcRu (1) have only led to impure (~Bu),PcRu(L),[~~. However, the crude compound can be used for the preparation of defined bisaxially coordinated monomers (tB~)~pcRu(L)* (L = e.g. pyridine, tert-butyl isocyanide) ['] and oligomers [(~BU>~PCRU(L)], (L = dib and me,dib) [']. For the coordination of weak bases such as pyrazine (pyz) or tetrazine (tz), which are important bridging ligands for e.g. intrinsic pure and non-coordinated (tBu),PcRu (1) is necessary because the ligands pyz and tz are not able to remove coordinated impurities in the process of preparation of [(tB~)~pcRu(L)],, L = pyz, tz, etc.In this paper we report on the synthesis and properties of pure (tBu),PcRu (1) and (tBu),-2,3-NcRu (2) which are potential precursors of soluble organic semiconductors. Results and DiscussionFor the synthesis of (tBu),PcRu (1) and (tBu)4-2,3-NcRu (2) by thermal decomposition of the corresponding bisaxially coordinated monomeric complexes (tB~)~Mac(L)2 attention must be paid to the fact that only the axial ligands and not the peripheral tBu substituents are split off. To attain a low decomposition temperature of the complexes (tBu),MacRu(L), (Mac = Pc, 2,3-Nc) some effects of the ligands L must be taken into consideration, e.g. electronic effects, which led us to use 3-chloropyridine (3-Clpy) because the chlorine atom in the 3-position should lower the coordination strength of the ligandr41. On the other hand, a back-bonding effect fr...

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Novel substances for which none or limited analytical data are available constitute a challenge for police and customs forensic laboratories. The time-consuming process of structural elucidation and acquisition of analytical data has been centralized in the ADEBAR project in Germany, co-funded since 2017 by the EU's Internal Security Fund. The project aims to comprehensively characterize substances relevant for forensic-toxicological casework within the analytical competence network. The analytical datasets are distributed digitally through European and (inter)national channels.Additionally, pharmacological evaluation allows for estimating in vivo potency and potential harm required as scientific evidence for legislative amendments. The ADEBAR project contributes to the availability of analytical data on new substances relevant to the daily work of police and customs laboratories. Since the inception of Svenja Fischmann and Benedikt Pulver contributed equally to this work.