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87709-55-5

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87709-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87709-55-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87709-55:
(7*8)+(6*7)+(5*7)+(4*0)+(3*9)+(2*5)+(1*5)=175
175 % 10 = 5
So 87709-55-5 is a valid CAS Registry Number.

87709-55-5Downstream Products

87709-55-5Relevant articles and documents

UEBER GEMISCHTE BINDUNGEN IN DER IV. HAUPTGRUPPE I. HEXAPHENYLETHAN-ANALOGA Ph3Pb-MPh3, M = Pb, Sn, Ge, Si

Kleiner, Norbert,Draeger, Martin

, p. 151 - 170 (2007/10/02)

The reaction of Ph3PbLi with Ph3SnCl or Ph3GeCl gives Ph3Pb-SnPH3 and Ph3Pb-GePh3, respectively; there is no reaction with Ph3SiCl, PhSiLi reacts with Ph3PbCl to form a regular 1:1 Pb2Ph6*Si2Ph6 phase.The compounds have been investigated by mass, NMR and vibrational spectra: 207Pb NMR chemical shifts with respect to PbMe4 -79.8 (Pb2Ph6), -256.5 (Ph3Pb-SnPh3), -271.5 ppm (Ph3Pb-GePh3); stetching vibrations 112 (Pb-Pb), 125 (Pb-Sn), 138 cm-1 (Pb-Ge).The crystal structures have been determined and refined to R = 0.061 (Ph3Pb-SnPh3, -40 deg C), 0.053 (Ph3Pb-GePh3, -50 deg C), 0.068 (Pb2Ph6*Si2Ph6, 20 deg C); bond lengths 285 (Pb-Pb), 283 (Pb-Sn), 262 pm (Pb-Ge).

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