Synthesis, spectroscopic studies and structure of gold(III) chloride compounds of heterocyclic N-oxide diadducts revealing short hydrogen bond
نام عام مواد
[Thesis]
نام نخستين پديدآور
S. A. A. Al-Hamoud
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
King Fahd University of Petroleum and Minerals (Saudi Arabia)
تاریخ نشرو بخش و غیره
1985
مشخصات ظاهری
نام خاص و کميت اثر
116
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.S.
کسي که مدرک را اعطا کرده
King Fahd University of Petroleum and Minerals (Saudi Arabia)
امتياز متن
1985
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
The present study deals with the synthesis and structure elucidation of several novel gold(III) chloride compounds having general formula (H(R-usd\rm pyNO)\sb2\rbrack\lbrack AuCl\sb4\rbrackusd where R = 2-Me, 3-Me, 4-Me, 2,6-(CH3)\sb2, p-NO2 and m-COOH. The three-dimensional single crystal x-ray structure analysis was completed on three compounds, namely, (H(2-usd\rm picNO)\sb2\rbrack\lbrack AuCl\sb4\rbrack,usd (H(3-usd\rm picNO)\sb2\rbrack\lbrack AuCl\sb2\rbrackusd and (H(4-usd\rm picNO)\sb2\rbrack\lbrack AuCl\sb4\rbrack.usd In all compounds the short hydrogen bonded dimeric cation was stabilized by the (AuCl4\rbrack \sp- anion. The O-H-O bond in the diadducts is among the shortest so far reported in literature. The short hydrogen bond in the (H(2-usd\rm picNO)\sb2\rbrack\lbrack AuCl\sb4\rbrackusd is unique in that the bridged proton has no symmetry restrictions usually known to exist in similar hydronium ion diadducts. The presence of a strong and broad absorption band around 1050 cm in IR spectra has been established as a diagnostic observation for the existence of a short hydrogen bond with O ... O separation less than 2.5A. (Abstract shortened by UMI.)
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Chemistry
موضوع مستند نشده
Pure sciences
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )