In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Measurement of energy dependence of K X-ray fluorescence cross-sections for Co, Ni and Cu halogens compounds, published in 2003-06-30, which mentions a compound: 13940-83-5, mainly applied to transition metal halide x ray fluorescence lattice energy; fluoride transition metal x ray fluorescence lattice energy; chloride transition metal x ray fluorescence lattice energy, Computed Properties of F2H8NiO4.
The photon induced K x-ray fluorescence cross sections (σKα, σKβ) for Co, Ni and Cu in F and Cl compounds were studied. Measurements were carried out at 10 different energies in the interval 8.14-16.89 keV by using secondary excitation method. K x-rays emitted by samples were counted by a Si(Li) detector with resolution 160 eV at 5.9 keV. K x-ray fluorescence cross sections (σKα, σKβ) for Co, Ni and Cu in F and Cl compounds decrease with increasing excitation energy. Particularly, K x-ray fluorescence cross sections (σKα, σKβ) for F compounds of this element are higher than the theor. values and those of Cl compounds of this element. Obtained values were compared with theor. values of pure elements.
Compounds in my other articles are similar to this one(Nickel(ii)fluoridetetrahydrate)Computed Properties of F2H8NiO4, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider