Coordination chemistry studies of bond valence sums of several metal complex environments and nickel (II) 2-acetylpyridine thiosemicarbazone complexes

摘要: This dissertation deals with two areas of coordination chemistry: bond valence sums (BVS) studies and nickel (II) 2-acetylpyridine thiosemicarbazones. The BVS studies focus on six types of metal complex environments. These are MO n (M= Na, K, Co, Cr; n= 3–8) and NaO a N b and KO a N b (a= 0–7, b= 1–8) complexes. For the Na-O environment, the R 0 value was determined at 1.756 Å. The R 0 value can be viewed as a length of unit valence. For KO, it was 2.113 Å. For the Co-O, Cr-O, Na-N (determined from the NaON group), and KN (determined from KON) interactions the values were 1.661, 1.724, 1.935, and 2.105 Å respectively. These R 0 values were found to reliably calculate the correct metal oxidation state for each of these complex types. For the cases of cobalt and chromium the R 0 values determined were oxidation state-independent. For the sodium and potassium environments, a novel covalent 7r …