Bis(2-amino-2-methyl-1-propanol)bis(o-nitrobenzoato-O)copper(II), [Cu(C4H11NO)2(C7H4NO4)2]

Copper(II) Acetate Complexes, [CuLm(OAc)2]n (L = HNPPh3), Stable in the Solid State Either as a Dimer (m = 1, n = 2) or a Monomer (m = 2, n = 1)

“…Further proof of hydrogen bonding is evident in the FTIR spectrum of 1 , which displays a broadened N−H stretch centered at approximately 3400 cm -1 (Figure S1). This type of hydrogen bonding in copper(II) carboxylate monomers has been observed in the related complex Cu(HNPEt 3 ) 2 (OAc) 2 ,9a and in a complex coordinated by a sterically bulky carboxylate and methanol 2a…”

“…The familiar “paddlewheel” structure of copper(II) carboxylates has been known for many years . There are far fewer examples of crystal structures of copper carboxylate monomers, most of which are stabilized by bulky alkyl or aryl groups on the carboxylate anion . Although there have been reports of equilibria in solution between the copper acetate monomer and dimer, to our knowledge, there are no examples of copper acetate complexes where the monomer and dimer have been structurally characterized in the solid state.…”

Three crystal forms of tetrakis(μ2-2-nitrobenzoato-O,O′)-diaqua-di-copper(ii)

“…8 Hydrogen bonding is another factor tending to orient the substituents. 9 The metrics of the hydrogen bonding are summarized in Table 3. The molecule in the asymmetric unit of form 1 and both molecules in the asymmetric unit of form 2 exhibit two characteristic hydrogen bonds.…”

Silver(I) o-nitrobenzoate

“…Nevertheless, Muhonen's proposition (1983) is verified: the sum of the two dihedral angles between the phenyl plane and each substituent plane is nearly 90 °. According to Muhonen (1983), the magnitude of the dihedral angles depends on factors such as intermolecular contacts and coordination of the substituents. Table 3 shows that the dihedral angle between the CO2 plane and the benzene ring is always greater than those between the ring and the NO2 plane.…”