7  5,763,670  8  Representative  of  more  preferred  classes  of  organobis› phosphites  are  those  of the  following  Formulas  (V)  to  (VIl):  wherein  each  R  1 ,  R  $^{2 }$and  X of  Formulas  (II)  to  (N)  are  the  same  as  defined  above  for  Formula  (I).  Preferably  each  R  1  and  X  represents  a  divalent  hydrocarbon  radical  selected  from  alkylene,  arylene,  arylene-alkylene-arylene.  and  bisarylene,  while  each  R $^{2 }$radical  represents  a  monovalent  hydrocarbon  radical  selected  from  alkyl  and  aryl  radicals.  Organopolyphosphite  ligands  of  such  Formulas  (II)  to  (N)  may  be  found  disclosed..  for  example,  in  U.S.  Pat.  Nos.  4,668,651;  4,748.261;  4.769.498;  4,774,361;  4,885.401;  5,113,022;  5.179,055;  5.202.297;  5,235,113;  5,254.741;  5,264,616;  5312,996;  5364.950;  and  5,391.801;  the  disclo- sures  of all  of  which  are  incorporated  herein  by  reference.  wherein  X  represents  a  substituted  or  unsubstituted  n-valent  organic  bridging  radical  containing  from  2 to  40  carbon  atoms,  each  R 1  is the  same  or  different  and  represents  a  divalent  organic  radical  containing  from  4 to  40  carbon  atoms,  each  R 2  is the  same  or  different  and  represents  a  substituted  or  unsubstituted  monovalent  hydrocarbon  radical  containing  from  1 to  24  carbon  atoms,  a  and  b  can  be  the  same  or  different  and  each  have  a  value  of  O  to 6.  with  the  Representative  organopolyphosphites  contain  two  or  more  tertiary  (trivalent)  phosphorus  atoms  and  may  include  those  having  the  formula:  (I)  (IV)  (Ill)  (Il)  Illustrative  preferred  organopolyphosphites  may  include  bisphosphites  such  as  those  of  Formulas  (II)  to  (N)  below:  Among  the  organopolyphosphites  that  may  serve  as the  ligand  of  the  metal-organopolyphosphite  ligand  complex  catalyst  containing  reaction  product  fluids  of this  invention  and/or  any  free  organopolyphosphite  ligand  of  the  hydro- formylation  process  that  might  also  be  present  in  said  reaction  product  fluids  are  organopolyphosphite  compounds  described  below.  Such  organopolyphosphite  ligands  employable  in  this  invention  and/or  methods  for  their  prepa› ration  are  well  known  in the  art.  The  organopolyphosphites  that  may  serve  as the  ligand  of  $_{the }$metal--organopolyphosphite  ligand  complex  catalyst  and/  or  free  ligand  of the  hydroformylation  processes  and  reac› tion  product  fluids  of  this  invention  may  be  of the  achiral  (optically  inactive)  or  chiral  (optically  active)  type  and  are  well  known  in  the  art  Achiral  organopolyphosphites  are  preferred.  Representative  n-valent  (preferably  divalent)  hydrocar- bon  bridging  radicals  represented  by  X  and  representative  divalent  organic  radicals  represented  by  R 1  above,  include  both  acyclic  radicals  and  aromatic  radicals.  such  as  alkylene.  alkylene-Qm-alkylene.  cycloalkylene,  arylene,  bisarylene.  arylene-alkylene,  and  arylene-(CH$_{2}$ )y-Qm-(CH$_{2}$ )y› arylene  radicals,  and  the  like.  wherein  each  y is  the  same  or  different  and  is a  value  of  O  or  1.  Q  represents  a  divalent  bridging  group  selected  from  -C(R 3 h-,  -0-,  -S-.  -NR 4 -.  Si(R 5 h- and-CO-.  wherein  each  R 3  is the  same  or  different  and  represents  hydrogen,  an  alkyl  radical  having  from  1 to  12  carbon  atoms,  phenyl.  tolyl.  and  anisyl.  R 4  represents  hydrogen  or  a  substituted  or  unsubstituted  monovalent  hydrocarbon  radical,  e.g  .•  an  alkyl  radical  hav› ing  1 to  4  carbon  atoms;  each  R $^{5 }$is the  same  or  different  and  represents  hydrogen  or an  alkyl  radical,  and  m is  a  value  of  0  or  1.  The  more  preferred  acyclic  radicals  represented  by  X  and  R  $^{1 }$above  are  divalent  alkylene  radicals,  while  the  more  preferred  aromatic  radicals  represented  by  X  and  R  $^{1 }$above  are  divalent  arylene  and  bisarylene  radicals.  such  as  dis› closed  more  fully,  for  example,  in  U.S.  Pat.  Nos.  4,769.498;  4.774361:  4,885.401;  5,179,055;  5,113,022;  5.202.297;  5,235,113;  5.264,616  and  5,364,950,  and  European  Patent  Application  Publication  No.  662,468.  and  the  like,  the  disclosures  of  which  are  incorporated  herein  by  reference.  Representative  preferred  monovalent  hydrocarbon  radicals  represented  by  each  R 2  radical  above  include  alkyl  and  aromatic  radicals.  The  number  of  available  coordination  sites  on  such  metals  is  well  known  in  the  art.  Thus  the  catalytic  species  may  comprise  a  complex  catalyst  mixture,  in  their  monomeric,  dimeric  or  higher  nuclearity  forms.  which  are  preferably  characterized  by  at  least  one  organopolyphosphite› containing  molecule  complexed  per  one  molecule  of  metal.  e.g  .•  rhodium.  For  instance,  it is  considered  that  the  catalytic  species  of the  preferred  catalyst  employed  in a  hydroformy- lation  reaction  may  be  complexed  with  carbon  monoxide  and  hydrogen  in  addition  to the  organopolyphosphite  ligands  in  view  of the  carbon  monoxide  and  hydrogen  gas  employed  by  the  hydroformylation  reaction.  concert  (e.g.,  via  chelation)  with  the  metal.  Carbon  monox› ide  (which  is  also  properly  classified  as a  ligand)  can  also  be  present  and  complexed  with  the  metal.  The  ultimate  com› position  of the  complex  catalyst  may  also  contain  an  addi› tional  ligand.  e.g  ..  hydrogen  or  an  anion  satisfying  the  coordination  sites  or  nuclear  charge  of the  metal.  Illustrative  additional  ligands  include.  for  example,  halogen  (Cl.  Br,  I),  alkyl.  aryl.  substituted  aryl.  acyl.  CF$_{3}$ ,  CzF$_{5}$ •  CN,  (R)$_{2}$ PO  and  RP(OXOH)O  (wherein  each  R is  the  same  or  different  and  is a  substituted  or  unsubstituted  hydrocarbon  radical.  e.g .•  the  alkyl  or  aryl).  acetate,  acetylacetonate,  SO$_{4}$ •  PF  4 •  PF$_{6}$ •  NO$_{2}$ •  NO$_{3}$ •  CH$_{3}$ O.  CH$_{2}$ ==CHCH$_{2}$ •  CH$_{3}$ CH=CHCH$_{2}$ ,  C$_{6}$H$_{5}$ CN.  CH$_{3}$ CN.  NH$_{3}$ ,  pyridine.  (C$_{2}$ H$_{5}$ ) $_{3}$N.  mono-olefins.  diolefins  and  triolefins.  tetrahydrofuran.  and  the  like.  It is  of  course  to be  understood  that  the  complex  species  are  pref- erably  free  of any  additional  organic  ligand  or  anion  that  might  poison  the  catalyst  or  have  an  undue  adverse  effect  on  catalyst  performance.  It  is  preferred  in  the  metal› organopolyphosphite  ligand  complex  catalyzed  hydro› formylation  reactions  that  the  active  catalysts  be  free  of  halogen  and  sulfur  directly  bonded  to  the  metal.  although  such  may  not  be  absolutely  necessary.  proviso  that  the  sum  of a+b  is 2  to 6  and  n  equals  a+b.  Of  course  it is  to be  understood  that  when  a  has  a  value  of 2  or  more,  each  R  1  radical  may  be  the  same  or  different.  and  when  b  has  a  value  of 1  or  more,  each  R $^{2 }$radical  may  be the  same  or  different.  [ R2-Q\  P-0  X  I  R2-0  2  0  O-R 2  I\  I  R 1  P-0-X-0-P  \I  \  0  O-R 2 