Reference

Dithiosulfonate compounds for electrolytic copper plating additives

All Rights Reserved. Dithiosulfonate compounds for electrolytic copper plating additives. Shibata, Toshihiro; Sasaki, Asako (Adeka Co., Ltd.Chemicals with cas numbers 1939-99-7 and 124-63-0 also play role., Japan). Jpn. Kokai Tokkyo Koho JP 2007016264 A 25 Jan 2007, 14pp. (Japanese). (Japan). CODEN: JKXXAF. APPLICATION: JP 2005-197384 6 Jul 2005. DOCUMENT TYPE: Patent CA Section: 56 (Nonferrous Metals and Alloys) Section cross-reference(s): 72, 76 The compds. are represented by S2[(CR1R2)nSO3M]2 (R1, R2 = H, AR3p; R1 and R2 are not H at the same time; M = alkali metal, ammonium, monovalent organoammonium; n = 1-7; A = benzene ring, naphthalene ring; R3 = C1-4 alkyl, halo, C1-4 alkoxy; p = 0-4). An aq. electrolytic Cu plating bath using the compds. as additives and electrolytic Cu plating method using the bath are also claimed. Cu is filled in grooves or holes of substrates without void formation by using the additives. .

Organic sulfur mechanisms

Organic sulfur mechanisms. 19. Sulfene-tertiary amine zwitterions and base size effects in sulfene condensations. King, James Frederick; Harding, David R. K. (Dep. Chem., Univ. West. Ontario, London, Ont.There are some reagents with their cas registry numbers 1939-99-7 and 102-82-9 are used in this study., Can.). Can. J. Chem., 54(16), 2652-7 (English) 1976. CODEN: CJCHAG. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The effect of changing the size of the tertiary alkylamine was investigated in 2 systems: (a) the reaction of PhCH2SO2Cl with a tertiary amine, and (b) the formation of the .beta.-sultone from the reaction of chloral, EtSO2Cl, and a tertiary amine. In the first reaction the yield of stilbene or stilbene episulfone increases and that of the thiobenzoyl chloride S-oxides decreases as the size of the base decreases, as expected for a mechanism involving a tertiary amine-sulfene zwitterion in the formation of the stilbene products. In the second reaction the yield of the .beta.-sultone is much enhanced by the use of a small amine; the latter observation precludes a simple sulfene-chloral cycloaddn. mechanism and points to a zwitterionic intermediate derived from the amine and either the sulfene or chloral. .