platinicadj.

Brit.

/pləˈtɪnɪk/, U.S.

/pləˈtɪnɪk/

Origin: Either (i) formed within English, by derivation; modelled on a French lexical item. Or (ii) a borrowing from Latin, combined with an English element; modelled on a French lexical item. Etymons: platinum n., -ic suffix; Latin platinum , -ic suffix.

Etymology: < platinum n. or its etymon post-classical Latin platinum + -ic suffix, after French platinique (1789 in the passage translated in quot. 1790 at main sense); compare post-classical Latin platinicum (1811 or earlier: see below). With platinic chloride n. at Compounds compare French chlorure platinique (1854 or earlier). With platinic oxide n. at Compounds compare post-classical Latin oxidum platinicum (1811 or earlier), French oxyde platinique (1843 or earlier). Compare later platinous adj.

Chemistry.

Of or containing platinum, esp. in the tetravalent state. Cf. platinous adj.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > platinum > [adjective] > compounds

platinic1790

platinous1842

1790 R. Kerr tr. A. Lavoisier Elements Chem. ii. (table) (facing p. 185) New Names... Platinic acid [Fr. acide platinique].

1799 H. Davy in T. Beddoes Contrib. Physical & Med. Knowl. facing p. 90 (table) [New Name] Platinic Phosoxyd. [Old Name] Oxyd of Platina.

1866 H. Watts Dict. Chem. IV. 665 Platinum forms two series of compounds, the platinous compounds in which it is diatomic, e.g. PtCl₂, PtO, etc., and the platinic compounds in which it is tetratomic, e.g. PtCl₄, PtO₂, etc.

1938 R. Hum Chem. for Engin. Students xxviii. 798 Platinic Sulphide, PtS₂, is obtained by precipitation, from potassium platinichloride, by sulphuretted hydrogen, at 90°C.

1950 N. V. Sidgwick Chem. Elements II. 1616 Platinic ammines are known of every type from [PtAm₆]X₄ to M[PtAmX₅] and M₂[PtX₆].

1976 New Phytologist 77 627 Unlabelled sulphur-containing markers were detected with the platinic iodide stain of Toennies and Kolb.

2000 Proc. National Acad. Sci. U.S.A. 97 12325/2 Methoxyindoleamines were..oxidized at a potential of +550 mV versus a platinic reference electrode.

Compounds

platinic chloride n. platinum tetrachloride, PtCl₄, a red-brown solid obtained by heating platinum with chlorine.

ΚΠ

1858 H. Watts & R. Bridges T. Graham's Elements Inorg. Chem. (ed. 2) 611 In a solution of platinic chloride, potash or ammonia forms a yellow crystalline precipitate.

1938 L. Hogben Sci. for Citizen 692 When platinum electrodes are dipped in hydrochloric acid the positive electrode is worn away by the formation of platinic chloride.

1993 Analyt. Chem. 65 1200/1 Platinization was done in a solution of platinic chloride and lead acetate.

platinic oxide n. platinum dioxide, PtO₂, a black powder used as a hydrogenation catalyst.

ΚΠ

1842 T. Graham Elements Chem. ii. v. 684 Peroxide of platinum, Platinic oxide, PtO₂.

1907 G. S. Newth Text-bk. Inorg. Chem. (ed. 12) iii. xiv. 693 Platinous oxide, PtO, and platinic oxide, PtO₂, are obtained in the form of dark grey or black powders by gently heating the corresponding hydroxides.

1972 Jrnl. Amer. Chem. Soc. 94 6505/1 A solution..was hydrogenated in the presence of 0.3 g of platinic oxide at room temperature.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	platinic
释义	platinicadj. Brit. /pləˈtɪnɪk/, U.S. /pləˈtɪnɪk/ Origin: Either (i) formed within English, by derivation; modelled on a French lexical item. Or (ii) a borrowing from Latin, combined with an English element; modelled on a French lexical item. Etymons: platinum n., -ic suffix; Latin platinum , -ic suffix. Etymology: < platinum n. or its etymon post-classical Latin platinum + -ic suffix, after French platinique (1789 in the passage translated in quot. 1790 at main sense); compare post-classical Latin platinicum (1811 or earlier: see below). With platinic chloride n. at Compounds compare French chlorure platinique (1854 or earlier). With platinic oxide n. at Compounds compare post-classical Latin oxidum platinicum (1811 or earlier), French oxyde platinique (1843 or earlier). Compare later platinous adj. Chemistry. Of or containing platinum, esp. in the tetravalent state. Cf. platinous adj. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > platinum > [adjective] > compounds platinic1790 platinous1842 1790 R. Kerr tr. A. Lavoisier Elements Chem. ii. (table) (facing p. 185) New Names... Platinic acid [Fr. acide platinique]. 1799 H. Davy in T. Beddoes Contrib. Physical & Med. Knowl. facing p. 90 (table) [New Name] Platinic Phosoxyd. [Old Name] Oxyd of Platina. 1866 H. Watts Dict. Chem. IV. 665 Platinum forms two series of compounds, the platinous compounds in which it is diatomic, e.g. PtCl₂, PtO, etc., and the platinic compounds in which it is tetratomic, e.g. PtCl₄, PtO₂, etc. 1938 R. Hum Chem. for Engin. Students xxviii. 798 Platinic Sulphide, PtS₂, is obtained by precipitation, from potassium platinichloride, by sulphuretted hydrogen, at 90°C. 1950 N. V. Sidgwick Chem. Elements II. 1616 Platinic ammines are known of every type from [PtAm₆]X₄ to M[PtAmX₅] and M₂[PtX₆]. 1976 New Phytologist 77 627 Unlabelled sulphur-containing markers were detected with the platinic iodide stain of Toennies and Kolb. 2000 Proc. National Acad. Sci. U.S.A. 97 12325/2 Methoxyindoleamines were..oxidized at a potential of +550 mV versus a platinic reference electrode. Compounds platinic chloride n. platinum tetrachloride, PtCl₄, a red-brown solid obtained by heating platinum with chlorine. ΚΠ 1858 H. Watts & R. Bridges T. Graham's Elements Inorg. Chem. (ed. 2) 611 In a solution of platinic chloride, potash or ammonia forms a yellow crystalline precipitate. 1938 L. Hogben Sci. for Citizen 692 When platinum electrodes are dipped in hydrochloric acid the positive electrode is worn away by the formation of platinic chloride. 1993 Analyt. Chem. 65 1200/1 Platinization was done in a solution of platinic chloride and lead acetate. platinic oxide n. platinum dioxide, PtO₂, a black powder used as a hydrogenation catalyst. ΚΠ 1842 T. Graham Elements Chem. ii. v. 684 Peroxide of platinum, Platinic oxide, PtO₂. 1907 G. S. Newth Text-bk. Inorg. Chem. (ed. 12) iii. xiv. 693 Platinous oxide, PtO, and platinic oxide, PtO₂, are obtained in the form of dark grey or black powders by gently heating the corresponding hydroxides. 1972 Jrnl. Amer. Chem. Soc. 94 6505/1 A solution..was hydrogenated in the presence of 0.3 g of platinic oxide at room temperature. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1790
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