Synthesis and crystal
structure of a
new heteroligand copper(I)
π-complex [Cu8(C9H9N3)4Cl6(ClO4)2(EtOH)2] based on 1-allyl-1H-benzotriazole
Chem.
Met. Alloys 13 (2020)
8-13
https://doi.org/10.30970/cma13.0397
Yurii SLYVKA, Àndrii
FED’KO, Evgeny GORESHNIK, Marian MYS’KIV
By means of the
alternating current electrochemical technique a new heteroligand
π-complex [Cu8(1-Abtr)4Cl6(ClO4)2(EtOH)2] (1) (1-Abtr = 1-allyl-1H-benzotriazole)
has been obtained and characterized by X-ray single-crystal diffraction. Crystals of 1 are monoclinic, space group P21/n, a = 7.936(3), b = 24.781(6), c = 13.908(4) Å, β = 99.42(3)°, V = 2698.3(15) Å3 at 200 K, Z = 2. A large centrosymmetric
fragment contains four crystallographically
independent copper(I) atoms, two of which (Cu1 and
Cu2) are π‑connected with allylic groups
of two 1-Abtr molecules and adopt
similar trigonal pyramidal surrounding, including two
bridging halogen atoms. The two other independent σ-coordinated Cu3 and Cu4
atoms connect two triazole rings of two 1-Abtr molecules, forming six-membered {Cu2N4} cycles. Within the centrosymmetric fragment the neighboring benzotriazole rings are rotated relative to each other by
178.5(8)°, being
involved in π-π-stacking.
Dimeric [Cu8(C9H9N3)4Cl6(ClO4)2(EtOH)2] fragment in structure 1.
Keywords
1,2,3-Triazole
/ Copper(I) / π-Complex / Crystal
structure