A composition comprising: a) a chromium C 3 -C 25 carboxylate composition, the C 3 -C 25 carboxylate having the formula - O 2 CR 2c where R 2c is C 2 to C 24 hydrocarbyl, the chromium C 3 -C 25 carboxylate composition: i) having a KBr pellet infrared spectrum with a υ asym (CO 2) infrared absorbance peak within 110 cm -1 of the υ sym (CO 2) infrared peak and having an infrared absorbance peak height ratio of a υ asym (CO 2) infrared absorbance peak at 1516 ± 15 cm -1 to infrared absorbance peak located at 700 ± 50 cm -1 greater than or equal to 3:1, or ii) obtainable by a process comprising contacting under substantially anhydrous and substantially acid-free conditions 1) a chromium precursor having a formula CrX 3 L λ where each X independently is a halide, each L independently is a C 2 -C 10 ether, a C 2 -C 10 thioether, a C 2 -C 5 nitrile, a C 1 -C 30 amine, or a C 3 -C 30 phosphine, or any combination thereof, and λ ranges from 0 to 7, 2) a Group 1 or Group 2 metal C 3 -C 25 carboxylate having the formula M A (O 2 CR 2c) s, where M A represents the Group 1 or Group 2 metal, O 2 CR 2c represents a monocarboxylate group, s represents the oxidation number of the Group 1 or Group 2 metal, and R 2c is a C 2 to C 24 hydrocarbyl group, and 3) a first solvent, wherein substantially anhydrous and substantially acid-free conditions refers to conditions where the amount of water is less than or equal to 100 ppm (by weight) and the amount of acid is less than or equal to 1000 ppm (by weight) acid; b) a pyrrole compound; and c) a metal hydrocarbyl compound. a) a chromium C 3 -C 25 carboxylate composition, the C 3 -C 25 carboxylate having the formula - O 2 CR 2c where R 2c is C 2 to C 24 hydrocarbyl, the chromium C 3 -C 25 carboxylate composition: i) having a KBr pellet infrared spectrum with a υ asym (CO 2) infrared absorbance peak within 110 cm -1 of the υ sym (CO 2) infrared peak and having an infrared absorbance peak height ratio of a υ asym (CO 2) infrared absorbance peak at 1516 ± 15 cm -1 to infrared absorbance peak located at 700 ± 50 cm -1 greater than or equal to 3:1, or ii) obtainable by a process comprising contacting under substantially anhydrous and substantially acid-free conditions 1) a chromium precursor having a formula CrX 3 L λ where each X independently is a halide, each L independently is a C 2 -C 10 ether, a C 2 -C 10 thioether, a C 2 -C 5 nitrile, a C 1 -C 30 amine, or a C 3 -C 30 phosphine, or any combination thereof, and λ ranges from 0 to 7, 2) a Group 1 or Group 2 metal C 3 -C 25 carboxylate having the formula M A (O 2 CR 2c) s, where M A represents the Group 1 or Group 2 metal, O 2 CR 2c represents a monocarboxylate group, s represents the oxidation number of the Group 1 or Group 2 metal, and R 2c is a C 2 to C 24 hydrocarbyl group, and 3) a first solvent, wherein substantially anhydrous and substantially acid-free conditions refers to conditions where the amount of water is less than or equal to 100 ppm (by weight) and the amount of acid is less than or equal to 1000 ppm (by weight) acid; i) having a KBr pellet infrared spectrum with a υ asym (CO 2) infrared absorbance peak within 110 cm -1 of the υ sym (CO 2) infrared peak and having an infrared absorbance peak height ratio of a υ asym (CO 2) infrared absorbance peak at 1516 ± 15 cm -1 to infrared absorbance peak located at 700 ± 50 cm -1 greater than or equal to 3:1, or ii) obtainable by a process comprising contacting under substantially anhydrous and substantially acid-free conditions 1) a chromium precursor having a formula CrX 3 L λ where each X independently is a halide, each L independently is a C 2 -C 10 ether, a C 2 -C 10 thioether, a C 2 -C 5 nitrile, a C 1 -C 30 amine, or a C 3 -C 30 phosphine, or any combination thereof, and λ ranges from 0 to 7, 2) a Group 1 or Group 2 metal C 3 -C 25 carboxylate having the formula M A (O 2 CR 2c) s, where M A represents the Group 1 or Group 2 metal, O 2 CR 2c represents a monocarboxylate group, s represents the oxidation number of the Group 1 or Group 2 metal, and R 2c is a C 2 to C 24 hydrocarbyl group, and 3) a first solvent, wherein substantially anhydrous and substantially acid-free conditions refers to conditions where the amount of water is less than or equal to 100 ppm (by weight) and the amount of acid is less than or equal to 1000 ppm (by weight) acid; 1) a chromium precursor having a formula CrX 3 L λ where each X independently is a halide, each L independently is a C 2 -C 10 ether, a C 2 -C 10 thioether, a C 2 -C 5 nitrile, a C 1 -C 30 amine, or a C 3 -C 30 phosphine, or any combination thereof, and λ ranges from 0 to 7, 2) a Group 1 or Group 2 metal C 3 -C 25 carboxylate having the formula M A (O 2 CR 2c) s, where M A represents the Group 1 or Group 2 metal, O 2 CR 2c represents a monocarboxylate group, s represents the oxidation number of the Group 1 or Group 2 metal, and R 2c is a C 2 to C 24 hydrocarbyl group, and 3) a first solvent, b) a pyrrole compound; and c) a metal hydrocarbyl compound.