A solid catalyst component for use in olefinic polymerization, the solid catalyst component comprising: titanium; magnesium; a halogen; and an internal electron donor compound; wherein: the internal electron donor compound is at least one compound represented by Formula (I): R 1 is a group of formula: E is -CR 6 R 7 -, O, S, -OS(=O) 2 O-, -OS(=O)O-, -S(=O)O-, -N(R 4 )-, -P(R 4 )-, -Si(R 5 ) 2 -; R 2 and R 3 are individually H, OR 4 , SR 8 , NR 4 2 , PR 4 2 , Si(R 5 ) 2 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each R 4 is individually H, alkyl, or aryl; each R 5 is individually H, OR 4 , alkyl, or aryl; R 6 is H, alkyl, or cycloalkyl; R 7 is H, alkyl, or cycloalkyl; R 8 is haloaryl, haloheteroaryl, or haloheterocyclyl; R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 are independently H, F, Cl, Br, I, CN, NO 2 , OR 4 , SR 4 , NR 4 2 , PR 4 2 , SiR 5 3 , alkyl, aryl, or where any two adjacent members of R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 may join together to form a fused ring structure; and X is C, S, P, O, or NR Y , wherein R Y is H, alkyl, alkenyl, or alkynyl; with the provisos that: where E is O, R 2 and R 3 are not both OR 4 ; and where R 2 is OR 4 , R 3 is not phenyl. titanium; magnesium; a halogen; and an internal electron donor compound; wherein: the internal electron donor compound is at least one compound represented by Formula (I): R 1 is a group of formula: E is -CR 6 R 7 -, O, S, -OS(=O) 2 O-, -OS(=O)O-, -S(=O)O-, -N(R 4 )-, -P(R 4 )-, -Si(R 5 ) 2 -; R 2 and R 3 are individually H, OR 4 , SR 8 , NR 4 2 , PR 4 2 , Si(R 5 ) 2 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each R 4 is individually H, alkyl, or aryl; each R 5 is individually H, OR 4 , alkyl, or aryl; R 6 is H, alkyl, or cycloalkyl; R 7 is H, alkyl, or cycloalkyl; R 8 is haloaryl, haloheteroaryl, or haloheterocyclyl; R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 are independently H, F, Cl, Br, I, CN, NO 2 , OR 4 , SR 4 , NR 4 2 , PR 4 2 , SiR 5 3 , alkyl, aryl, or where any two adjacent members of R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 may join together to form a fused ring structure; and X is C, S, P, O, or NR Y , wherein R Y is H, alkyl, alkenyl, or alkynyl; with the provisos that: where E is O, R 2 and R 3 are not both OR 4 ; and where R 2 is OR 4 , R 3 is not phenyl. the internal electron donor compound is at least one compound represented by Formula (I): R 1 is a group of formula: E is -CR 6 R 7 -, O, S, -OS(=O) 2 O-, -OS(=O)O-, -S(=O)O-, -N(R 4 )-, -P(R 4 )-, -Si(R 5 ) 2 -; R 2 and R 3 are individually H, OR 4 , SR 8 , NR 4 2 , PR 4 2 , Si(R 5 ) 2 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each R 4 is individually H, alkyl, or aryl; each R 5 is individually H, OR 4 , alkyl, or aryl; R 6 is H, alkyl, or cycloalkyl; R 7 is H, alkyl, or cycloalkyl; R 8 is haloaryl, haloheteroaryl, or haloheterocyclyl; R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 are independently H, F, Cl, Br, I, CN, NO 2 , OR 4 , SR 4 , NR 4 2 , PR 4 2 , SiR 5 3 , alkyl, aryl, or where any two adjacent members of R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 may join together to form a fused ring structure; and X is C, S, P, O, or NR Y , wherein R Y is H, alkyl, alkenyl, or alkynyl; with the provisos that: where E is O, R 2 and R 3 are not both OR 4 ; and where R 2 is OR 4 , R 3 is not phenyl. where E is O, R 2 and R 3 are not both OR 4 ; and where R 2 is OR 4 , R 3 is not phenyl. <EOS>