nickel(II) trifluoroacetate [1] nickel(II) propionate [2] nickel bis(benzenesulfonate) [3] nickel(II) hydrogen citrate [4] citric acid, ammonium nickel salt [5] citric acid, nickel salt [6] nickel bis(2-ethylhexanoate) [7] 2-ethylhexanoic acid, nickel salt [8] dimethylhexanoic acid nickel salt [9] nickel(II) isooctanoate [10] nickel isooctanoate [11] nickel bis(isononanoate) [12] nickel(II) neononanoate [13] nickel(II) isodecanoate [14] nickel(II) neodecanoate [15] neodecanoic acid, nickel salt [16] nickel(II) neoundecanoate [17] bis(d-gluconato-O 1,O 2)nickel [18] nickel 3,5-bis(tert-butyl)-4-hydroxybenzoate (1:2) [19] nickel(II) palmitate [20] (2-ethylhexanoato-O)(isononanoato-O)nickel [21] (isononanoato-O)(isooctanoato-O)nickel [22] (isooctanoato-O)(neodecanoato-O)nickel [23] (2-ethylhexanoato-O)(isodecanoato-O)nickel [24] (2-ethylhexanoato-O)(neodecanoato-O)nickel [25] (isodecanoato-O)(isooctanoato-O)nickel [26] (isodecanoato-O)(isononanoato-O)nickel [27] (isononanoato-O)(neodecanoato-O)nickel [28] fatty acids, C6-19-branched, nickel salts [29] fatty acids, C8-18 and C18-unsaturated, nickel salts [30] 2,7-naphthalenedisulfonic acid, nickel(II) salt [31]