﻿Frequency 
  and 
  Molecular 
  Number. 
  347 
  

  

  Data 
  are 
  available 
  for 
  a 
  number 
  of 
  ketones 
  of 
  the 
  benzene 
  

  

  series. 
  

  

  Table 
  VII. 
  

  

  Name. 
  

  

  Formula. 
  

  

  N. 
  

  

  NvXlO 
  12 
  . 
  

  

  Methyl-phenyl 
  ketone 
  ~l 
  

   (aceto-phenoue) 
  ... 
  J 
  

   Ethyl-phenyl 
  ketone 
  ... 
  

   Methyl-benzyl 
  ketone 
  . 
  . 
  . 
  

   Propyl-phenyl 
  ketone 
  . 
  . 
  . 
  

  

  0H 
  3 
  .CO.0 
  6 
  H 
  5 
  

  

  2 
  H 
  5 
  . 
  00 
  . 
  O 
  e 
  H. 
  

   CH 
  3 
  . 
  CO 
  . 
  CH 
  2 
  . 
  6 
  H 
  5 
  

   C 
  3 
  H 
  7 
  .CO.C 
  6 
  H 
  5 
  

  

  64 
  

  

  72 
  

   72 
  

   80 
  

  

  63-16 
  

  

  64-48 
  

   6503 
  

   65-81 
  

  

  Here 
  tlie 
  values 
  of 
  Ni>x 
  10 
  ~ 
  12 
  , 
  though 
  not 
  differing 
  greatly 
  

   for 
  the 
  various 
  compounds, 
  tend 
  to 
  increase 
  slightly 
  with 
  the 
  

   complexity 
  of 
  the 
  chemical 
  molecule, 
  indicating 
  the 
  presence 
  

   of 
  a 
  constitutive 
  influence. 
  

  

  An 
  attentive 
  examination 
  of 
  the 
  results 
  just 
  recorded 
  for 
  

   organic 
  com 
  pounds 
  will 
  have 
  shown 
  that 
  in 
  a 
  large 
  number 
  

   of 
  cases 
  the 
  value 
  of 
  the 
  product 
  Nv 
  can 
  be 
  expressed 
  in 
  

   the 
  form 
  already 
  employed 
  for 
  inorganic 
  compounds. 
  In 
  

   other 
  cases, 
  however, 
  the 
  simple 
  form 
  of 
  the 
  relation 
  cannot 
  

   be 
  applied 
  successfully. 
  The 
  two 
  Tables 
  following 
  (VIII. 
  

   and 
  IX.) 
  contain 
  the 
  figures 
  for 
  a 
  number 
  of 
  well-known 
  

   aliphatic 
  and 
  aromatic 
  compounds 
  for 
  which 
  the 
  relation 
  is 
  

   found 
  to 
  hold 
  good. 
  

  

  It 
  is 
  noteworthy 
  that 
  the 
  frequency 
  number 
  for 
  organic 
  

   compounds 
  is 
  usually 
  small, 
  varying 
  from 
  about 
  3 
  to 
  about 
  5. 
  

   This 
  fact 
  may 
  be 
  correlated 
  with 
  the 
  low 
  melting-point 
  of 
  

   these 
  compounds 
  and 
  the 
  small 
  atomic 
  numbers 
  of 
  the 
  con- 
  

   stituent 
  elements. 
  

  

  Table 
  VIII. 
  

   Aliphatic 
  Compounds. 
  

  

  Name. 
  

  

  Formula. 
  

  

  Butyl 
  carbinol 
  (tert.) 
  ... 
  (CH 
  3 
  ) 
  3 
  C 
  . 
  CH 
  2 
  OH 
  

  

  Urethane 
  I 
  NH 
  2 
  C0 
  2 
  . 
  C 
  2 
  H 
  5 
  

  

  Urea 
  ! 
  CO(NH 
  2 
  ) 
  2 
  

  

  Ethyl 
  urea 
  j 
  C 
  2 
  H 
  5 
  NH 
  . 
  CONH 
  2 
  

  

  Ethylene 
  iodide 
  OH 
  2 
  I 
  . 
  CH 
  2 
  I 
  

  

  Iodoform 
  ! 
  CHI 
  3 
  

  

  Carbon 
  tetrabromide 
  ... 
  CBr 
  4 
  

  

  Oxamide 
  CONH 
  2 
  . 
  CONH 
  2 
  

  

  N. 
  

  

  vXlO" 
  12 
  - 
  

  

  50 
  

  

  1-242 
  

  

  48 
  

  

  1-307 
  

  

  32 
  

  

  2-243 
  

  

  48 
  

  

  1-500 
  

  

  122 
  

  

  0-672 
  

  

  166 
  

  

  0-549 
  

  

  146 
  

  

  0-703 
  

  

  46 
  

  

  2-209 
  

  

  NvXlO" 
  

  

  3 
  X20-7 
  

  

  3 
  X20-9 
  

   3^X205 
  

   3^x20-6 
  

  

  4 
  x20 
  5 
  

   4^x20-3 
  

  

  5 
  X20-5 
  

   5 
  X20-3 
  

  

  