Two-dimensional dynamical Jahn-Teller effects in a mixed-valence benzotriazolato copper cluster, Cu5(BTA)6(RNC)4

Abstract

Die Kondensation von Cu(I)‐thiophenolat, Benzotriazol und einem organischen Isocyanid liefert die Cluster (I), von denen (Ia) röntgenkristallographisch untersucht wird.

Raman spectroscopic studies on surface coordination mechanism of benzotriazole and triphenylphosphine with metals

“…The coordination chemistry of benzotriazole (BTAH) and its ring substituted derivatives has attracted considerable attention due to the effective inhibition for transition metals, particularly for Cu and its alloys [1][2][3][4][5][6]. Since the pioneering work of Cotton and coworkers [1,2], the adsorption/coordination behavior and bonding configuration between BTAH and Cu substrates have been extensively studied by many scientists using various techniques, such as electrochemical, surface analytical and spectroscopic techniques [7][8][9][10][11][12][13][14].…”

“…Most of the relevant studies were focused on the model of the interaction/coordination between BTAH and certain metals in different medium. For example, Marshall reported a Cu complex with BTAH and acetylacetone (acac) with the composition of Cu 5 (BTA) 6 (acac) 4 [6]. Himes et al prepared very similar structure by using t-C 4 H 9 NC to replace acac [3].…”

“…Himes et al prepared very similar structure by using t-C 4 H 9 NC to replace acac [3]. Li et al reported the preparation and crystal structure of Cu(I)-benzotriazolate complex containing a novel fragment [Cu 4 (BTA) 3 (pph 3 ) 4 ] + with a reverseumbrella like structure [15]. Wang synthesized two novel octahedral complexes with formula of [Zn(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 and [Cu(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 by the reaction of BTAH ligand with zinc(II) salt and copper(II) salt in ethanol-water solution, respectively [16].…”

“…Li et al reported the preparation and crystal structure of Cu(I)-benzotriazolate complex containing a novel fragment [Cu 4 (BTA) 3 (pph 3 ) 4 ] + with a reverseumbrella like structure [15]. Wang synthesized two novel octahedral complexes with formula of [Zn(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 and [Cu(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 by the reaction of BTAH ligand with zinc(II) salt and copper(II) salt in ethanol-water solution, respectively [16]. Kokoszka et al reported the clusters of composition Cu 5 (BTA) 6 (RNC) 4 prepared by the reaction of copper(I) thiophenoxide, BTAH, and an organic isocyanide.…”

“…Wang synthesized two novel octahedral complexes with formula of [Zn(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 and [Cu(BTA) 4 (H 2 O) 2 ](ClO 4 ) 2 by the reaction of BTAH ligand with zinc(II) salt and copper(II) salt in ethanol-water solution, respectively [16]. Kokoszka et al reported the clusters of composition Cu 5 (BTA) 6 (RNC) 4 prepared by the reaction of copper(I) thiophenoxide, BTAH, and an organic isocyanide. So far, there are lots of reports on the Cu complexes with BTAH and other ligands, it was mainly due to the high corrosion inhibition of BTAH with Cu and its alloys [4].…”