Inorganic chemistry is a subdiscipline within chemistry that focuses on inorganic compounds using metals and minerals to find their properties and behaviors. Some properties we look for include nonlinear optical properties like second harmonic generation (SHG) as well as photoluminescence. Nonlinear optical properties can be used for a variety of things such as telecommunications, lasers, and defense technologies. Studied behaviors of inorganic compounds can include their structure and connectivity between each atom within the entire crystal structure. Some previously studied heteroanionic compounds show great SHG and photoluminescence like LaBrVIO4 (VI: Mo, W). However, more research was needed to understand how replacing lanthanum with other lanthanides such as gadolinium or lutetium could affect SHG, photoluminescence, and connectivity. The method of creating these compounds included preparing test tubes with the reactants, vacuum sealing, and then putting the vacuum sealed tube inside a furnace. After coming out of the furnace, we washed the salt flux off and then performed powder x-ray diffraction (PXRD) as well as tests for SHG. We found from PXRD that 3 out of the 4 samples were most likely in the correct phase which we saw by matching peaks and their intensity from our samples to the reported compound. To test for SHG, we sent off samples to another lab and found they had great SHG from the imaging tests. Overall, this shows that using a lanthanide with a half full or full F subshell of electrons may create great SHG and connectivity.