code give more variables than what I have


I have the following data

 V1                        V2
1-Dec   -0.0539597263407143, -0.0511951479332808,
1-Mar     2.91833246778835, 0.549735256023383
1-Sep   -0.60152265093355, 0.596134547512546
The values are in one column which is V2, I would like to separate the column V2 ,"my data has 140 values" so I want to separate them in 140 columns.
I used the following
Code:, strsplit(geneinfo$V2, ", ")))
the problem is that it separate the values in 280 columns which is not correct they should be 140

what can I do?