Synthesis, characterization, and crystal structure of aqua­bis­­(4,4′-dimeth­­oxy-2,2′-bi­pyridine)[μ-(2R,3R)-tartrato(4−)]dicopper(II) octa­hydrate

Wiedemann, Dennis; Kulko, Roman-David; Grohmann, Andreas

Synthesis, characterization, and crystal structure of aquabis(4,4′-dimethoxy-2,2′-bipyridine)[μ-(2R,3R)-tartrato(4−)]dicopper(II) octahydrate

dc.contributor.author	Wiedemann, Dennis
dc.contributor.author	Kulko, Roman-David
dc.contributor.author	Grohmann, Andreas
dc.date.accessioned	2019-06-11T10:48:08Z
dc.date.available	2019-06-11T10:48:08Z
dc.date.issued	2019-06-11
dc.description.abstract	Typical electroless copper baths (ECBs), which are used to chemically deposit copper on printed circuit boards, consist of an aqueous alkali hydroxide solution, a copper(II) salt, formaldehyde as reducing agent, an L-(+)-tartrate as complexing agent, and a 2,2′-bipyridine derivative as stabilizer. Actual speciation and reactivity are, however, largely unknown. Herein, we report on the synthesis and crystal structure of aqua-1κO-bis(4,4′-dimethoxy-2,2′-bipyridine)-1κ2N,N′;2κ2N,N′-[μ-(2R,3R)-2,3-dioxidosuccinato-1κ2O1,O2:2κ2O3,O4]dicopper(II) octahydrate, [Cu2(C12H12N2O2)2(C4H2O6)(H2O)]·8H2O, from an ECB mock-up. The title compound crystallizes in the Sohncke group P21 with one chiral dinuclear complex and eight molecules of hydrate water in the asymmetric unit. The expected retention of the tartrato ligand's absolute configuration was confirmed via determination of the absolute structure. The complex molecules exhibit an ansa-like structure with two planar, nearly parallel bipyridine ligands, each bound to a copper atom that is connected to the other by a bridging tartrato `handle'. The complex and water molecules give rise to a layered supramolecular structure dominated by alternating π stacks and hydrogen bonds. The understanding of structures ex situ is a first step on the way to prolonged stability and improved coating behavior of ECBs.	en
dc.description.sponsorship	DFG, 414044773, Open Access Publizieren 2019 - 2020 / Technische Universität Berlin	en
dc.identifier.eissn	2056-9890
dc.identifier.uri	https://depositonce.tu-berlin.de/handle/11303/9503
dc.identifier.uri	http://dx.doi.org/10.14279/depositonce-8554
dc.language.iso	en	en
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	en
dc.subject.ddc	548 Kristallografie	de
dc.subject.other	crystal structure	en
dc.subject.other	coordination compound	en
dc.subject.other	copper(II) complex	en
dc.subject.other	dinuclear complex	en
dc.subject.other	bipyridine derivative	en
dc.subject.other	tartrates	en
dc.subject.other	electroless copper baths	en
dc.subject.other	hydrogen bonding	en
dc.subject.other	π stacks	en
dc.title	Synthesis, characterization, and crystal structure of aquabis(4,4′-dimethoxy-2,2′-bipyridine)[μ-(2R,3R)-tartrato(4−)]dicopper(II) octahydrate	en
dc.type	Article	en
dc.type.version	publishedVersion	en
dcterms.bibliographicCitation.doi	10.1107/S2056989019008053	en
dcterms.bibliographicCitation.issue	7	en
dcterms.bibliographicCitation.journaltitle	Acta Crystallographica Section E : Crystallographic Communications	en
dcterms.bibliographicCitation.originalpublishername	International Union of Crystallography	en
dcterms.bibliographicCitation.originalpublisherplace	Chester	en
dcterms.bibliographicCitation.pageend	975	en
dcterms.bibliographicCitation.pagestart	972	en
dcterms.bibliographicCitation.volume	75	en
tub.accessrights.dnb	free	en
tub.affiliation	Fak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Anorganische Chemie - Festkörper- und Materialchemie	de
tub.affiliation.faculty	Fak. 2 Mathematik und Naturwissenschaften	de
tub.affiliation.group	FG Anorganische Chemie - Festkörper- und Materialchemie	de
tub.affiliation.institute	Inst. Chemie	de
tub.publisher.universityorinstitution	Technische Universität Berlin	en