Comparison of the structural parameters in copper(II) acetate-type dimers containing distorted square pyramidal CuO4O and CuO4N chromophores

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

“…Crystal structure of 2 Figure 1 shows an ORTEP [26] drawing of binuclear 2 and selected bond distances and angles are listed in table 2. As usual in this kind of binuclear complex [21], the Cu(Clasp) 4 Cu group shows a lantern-like conformation where the Cu(II) ions are [29]. These results are in agreement Table 4 shows the spectral band positions and assignments for 1-8.…”

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

“…Crystal structure of 2 Figure 1 shows an ORTEP [26] drawing of binuclear 2 and selected bond distances and angles are listed in table 2. As usual in this kind of binuclear complex [21], the Cu(Clasp) 4 Cu group shows a lantern-like conformation where the Cu(II) ions are [29]. These results are in agreement Table 4 shows the spectral band positions and assignments for 1-8.…”

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

“…The pyridyl N donors of two ligands are coordinated to a pair of Cu II ions in the axial positions to generate the paddle‐wheel units, while two acetate groups from two different Cu(OAc) 2 groups are located in the equatorial plane [Cu1 ··· N1, 2.193(4) Å, Cu1 ··· O2, 1.970(3) Å, Figure b and Table ]. The copper atom (Cu1) is slightly out of the square plane of oxygen atoms (0.207 Å), which is consistent with the theory that the longer the Cu ··· Cu distance within the dimer, the higher the Cu out‐of‐plane deviation . In complex 1 , the Cu1 ··· Cu1 i distance is 2.6432(11) Å, which falls into the same order of magnitude as described in the literature (2.612–2.713 Å) .…”

Structures of copper(II) 2-chlorobenzoate monohydrate and copper(II) 3,5-dichlorobenzoate trihydrate

“…The sum of the bond distances (ΣCu-L) 11.29 Å in 1 (the half value of the Cu···Cu distance is also included in the sum) agrees will with the values reported for known dimeric structures with the CuO 4 O chromophores (Melnik et al, 1998). The values of angles O1-C1-O2 [124.5(3) Å] and O3-C8-O4 [124.4(3) Å] are in the range 11.6-132.0° found for tetracarboxylato dimers with CuO 4 O chromophores (Sundberg et al, 1996). The principal structural feature and atom numbering scheme of complex 2 are depicted in Fig.…”

“…The apical site is occupied by the oxygen atom (O1W) from coordinated water molecules. The apical Cu-O1W bond length of 2.134(2) Å, and the Cu-O carb bond lengths are in good agreement with those found in the other dimeric copper(II) carboxylate complexes (Melnik et al, 1998;Sundberg et al, 1996). The copper atom is displaced from the squares plane defi ned by the basal atoms toward the apical oxygen atom by 0.190(1) Å.…”

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

“…Crystal structure of 2 Figure 1 shows an ORTEP [26] drawing of binuclear 2 and selected bond distances and angles are listed in table 2. As usual in this kind of binuclear complex [21], the Cu(Clasp) 4 Cu group shows a lantern-like conformation where the Cu(II) ions are [29]. These results are in agreement Table 4 shows the spectral band positions and assignments for 1-8.…”

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

“…The pyridyl N donors of two ligands are coordinated to a pair of Cu II ions in the axial positions to generate the paddle‐wheel units, while two acetate groups from two different Cu(OAc) 2 groups are located in the equatorial plane [Cu1 ··· N1, 2.193(4) Å, Cu1 ··· O2, 1.970(3) Å, Figure b and Table ]. The copper atom (Cu1) is slightly out of the square plane of oxygen atoms (0.207 Å), which is consistent with the theory that the longer the Cu ··· Cu distance within the dimer, the higher the Cu out‐of‐plane deviation . In complex 1 , the Cu1 ··· Cu1 i distance is 2.6432(11) Å, which falls into the same order of magnitude as described in the literature (2.612–2.713 Å) .…”

Structures of copper(II) 2-chlorobenzoate monohydrate and copper(II) 3,5-dichlorobenzoate trihydrate

“…The sum of the bond distances (ΣCu-L) 11.29 Å in 1 (the half value of the Cu···Cu distance is also included in the sum) agrees will with the values reported for known dimeric structures with the CuO 4 O chromophores (Melnik et al, 1998). The values of angles O1-C1-O2 [124.5(3) Å] and O3-C8-O4 [124.4(3) Å] are in the range 11.6-132.0° found for tetracarboxylato dimers with CuO 4 O chromophores (Sundberg et al, 1996). The principal structural feature and atom numbering scheme of complex 2 are depicted in Fig.…”

“…The apical site is occupied by the oxygen atom (O1W) from coordinated water molecules. The apical Cu-O1W bond length of 2.134(2) Å, and the Cu-O carb bond lengths are in good agreement with those found in the other dimeric copper(II) carboxylate complexes (Melnik et al, 1998;Sundberg et al, 1996). The copper atom is displaced from the squares plane defi ned by the basal atoms toward the apical oxygen atom by 0.190(1) Å.…”

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

“…Crystal structure of 2 Figure 1 shows an ORTEP [26] drawing of binuclear 2 and selected bond distances and angles are listed in table 2. As usual in this kind of binuclear complex [21], the Cu(Clasp) 4 Cu group shows a lantern-like conformation where the Cu(II) ions are [29]. These results are in agreement Table 4 shows the spectral band positions and assignments for 1-8.…”

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

“…The pyridyl N donors of two ligands are coordinated to a pair of Cu II ions in the axial positions to generate the paddle‐wheel units, while two acetate groups from two different Cu(OAc) 2 groups are located in the equatorial plane [Cu1 ··· N1, 2.193(4) Å, Cu1 ··· O2, 1.970(3) Å, Figure b and Table ]. The copper atom (Cu1) is slightly out of the square plane of oxygen atoms (0.207 Å), which is consistent with the theory that the longer the Cu ··· Cu distance within the dimer, the higher the Cu out‐of‐plane deviation . In complex 1 , the Cu1 ··· Cu1 i distance is 2.6432(11) Å, which falls into the same order of magnitude as described in the literature (2.612–2.713 Å) .…”

Structures of copper(II) 2-chlorobenzoate monohydrate and copper(II) 3,5-dichlorobenzoate trihydrate

“…The sum of the bond distances (ΣCu-L) 11.29 Å in 1 (the half value of the Cu···Cu distance is also included in the sum) agrees will with the values reported for known dimeric structures with the CuO 4 O chromophores (Melnik et al, 1998). The values of angles O1-C1-O2 [124.5(3) Å] and O3-C8-O4 [124.4(3) Å] are in the range 11.6-132.0° found for tetracarboxylato dimers with CuO 4 O chromophores (Sundberg et al, 1996). The principal structural feature and atom numbering scheme of complex 2 are depicted in Fig.…”

“…The apical site is occupied by the oxygen atom (O1W) from coordinated water molecules. The apical Cu-O1W bond length of 2.134(2) Å, and the Cu-O carb bond lengths are in good agreement with those found in the other dimeric copper(II) carboxylate complexes (Melnik et al, 1998;Sundberg et al, 1996). The copper atom is displaced from the squares plane defi ned by the basal atoms toward the apical oxygen atom by 0.190(1) Å.…”