The Crystal Structure of [Cu(N3)2(C5H5N)2].

Linear trinuclear and one-dimensional copper(II) complexes containing co-bridging end-on azido and triazole ligands. Crystal structures and magnetic properties of [Cu3(atrz)2(N3)6] and [Cu(atrz)2(N3)]NO3 (atrz = 4-amino-1,2,4-triazole)

“…All Cu-N distances fall in the ranges 1.95-2.15 and 2.50-2.85 Å for short and long distances, respectively, very close to corresponding distances in other copper() azide complexes. 18 The N(5)-N( 6) distance (1.241(6) Å) is slightly larger than that of N(6)-N(7) (1.148(7) Å), as is common for the end-on azide bridging mode. The azide groups are found to be almost linear, while the sum of the angles around N(5) (350.3Њ) indicates some trigonal pyramidal distortion at the µ-1,1azido bridge.…”

“…[Cu(atrz) 2 (N 3 )]NO 3 2. To a stirring aqueous solution (20 ml) of atrz (127.5 mg, 1.5 mmol) was added an aqueous solution (5 ml) of Cu(NO 3 ) 2 ؒ3H 2 O (120 mg, 0.5 mmol), followed dropwise by a solution of NH 4 N 3 (18…”

The crystal and molecular structure of μ-oxy-bis(triphenylazidoantimony), a pentavalent antimony derivative with metal–oxygen–metal bonds

“…C2H4. NEt2)N3Br], Dori, 1968; [Cu(N3)2(CsHsN)2], Agrell, 1969; [Zn(N3)2(CsHsN)z], Agrell 1970;[Zn(N3)z(NH3)2], Agrell & Vannerberg, 1971;[Cuz(N3) 2{[CHzP(C6Hs)212}3], Gaughan, Ziolo & Dori, 1971; [As(C6Hs)4]z[Pd2(Na)6], Fehlhammer & Dahl, 1972), no structural determination of organometallic azide derivatives of group Vb elements has been reported.…”

Dinuclear copper(II) cryptates of macrocyclic ligands: synthesis, crystal structure, and magnetic properties. Mechanism of the exchange interaction through bridging azido ligands

“…The structure of the complex molecule is shown in Figure 2. A stereoscopic view of the packing in the unit cell is shown in Figure 12.48 Although the complex does not present any genuine symmetry element, a survey of all bond distance and bond angle values shows that it has a symmetry close to C2, the C2 axis going through the two axide ions N(25)-N(26)-N (27) and N(28)-N(29)-N- (30). The conformation of the macrocyclic ligand is of a "boat" shape (Figure 2).…”