R help - Feb 2013 - combining dataframes into single df with all columns

#I have 2 dataframes df1 & df2.  Each has a subset of all possible column
names.  #How do I combine the 2 tables so that they contain all column
names?   data1 <- c('2','3', '6', '8' ,
'9')  data2 <- c('1', '2',
'3', '6')  df1
<- data.frame(matrix(data=NA, nrow=1, ncol=length(data1),
dimnames=list(NULL, paste('col', data1, sep='') ) ) )  df2 <-
data.frame(matrix(data=data2, nrow=1, ncol=length(data2),
dimnames=list(NULL, paste('col', data2, sep='') ) ) )   e.g. 
data1 <-
c('2','3', '6', '8' , '9')  data2 <-
c('1', '2', '3', '6')  df1 <-
data.frame(matrix(data=NA, nrow=1, ncol=length(data1), dimnames=list(NULL,
paste('col', data1, sep='') ) ) )  df2 <-
data.frame(matrix(data=data2,
nrow=1, ncol=length(data2), dimnames=list(NULL, paste('col', data2,
sep='')
) ) )   #I want:  names3 <- sort( unique(c(names(df1), names(df2) ) ) )  df3
<-
data.frame(matrix(data=c('1','2','3','6','8','9'),
nrow=1,
ncol=length(names3), dimnames=list(NULL, names3 ) ) )

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#I have 2 dataframes df1 & df2.  Each has a subset of all possible column
names.
#How do I combine the 2 tables so that they contain all column names?

data1 <- c('2','3', '6', '8' , '9')
data2 <- c('1', '2', '3', '6')
df1 <- data.frame(matrix(data=NA, nrow=1, ncol=length(data1),
dimnames=list(NULL, paste('col', data1, sep='') ) ) )
df2 <- data.frame(matrix(data=data2, nrow=1, ncol=length(data2),
dimnames=list(NULL, paste('col', data2, sep='') ) ) )

e.g.
data1 <- c('2','3', '6', '8' , '9')
data2 <- c('1', '2', '3', '6')
df1 <- data.frame(matrix(data=NA, nrow=1, ncol=length(data1),
dimnames=list(NULL, paste('col', data1, sep='') ) ) )
df2 <- data.frame(matrix(data=data2, nrow=1, ncol=length(data2),
dimnames=list(NULL, paste('col', data2, sep='') ) ) )

#I want:
names3 <- sort( unique(c(names(df1), names(df2) ) ) )
df3 <-
data.frame(matrix(data=c('1','2','3','6','8','9'),
nrow=1,
ncol=length(names3), dimnames=list(NULL, names3 ) ) )