help newish to

I have a data set in R which consists of pathway names and genes included in those pathways. Pathways have different numbers of genes assigned to them. I wanted to write this data to file.
But when I used the code:

> write.table(path.to.genes,”Adj_Abs_pathway list”,row.names=FALSE)

I received the error message below:

Error in data.frame(REACT_1002 = c(5625L, 8659L), REACT_1006 = c(995L, :
arguments imply differing number of rows: 2, 4, 18, 220, 8, 119, 7, 10, 26, 44, 9, 12, 15, 40, 22, 83, 32, 14, 3, 6, 1, 16, 19, 27, 11, 113, 60, 5, 17, 24, 25, 23, 0, 21, 71, 20, 49, 42, 66, 34, 89, 90, 138, 35, 13, 50, 47, 39, 116, 65, 48, 31, 93, 84, 94, 30, 194, 132, 46, 149, 79, 43, 57, 107, 154, 199, 69, 61, 189, 177, 185, 179, 111, 326, 78, 59, 99, 127, 328, 295, 224, 45, 41, 137, 63, 29, 54, 77, 38, 354, 36, 112, 200, 108, 143, 188, 51, 33, 55, 92, 262, 91, 167, 68, 208, 58, 103, 80, 379, 276, 118, 171, 297, 28, 74, 109, 62, 81, 270, 53, 64, 238, 86, 176, 52, 121, 852, 396, 785, 95, 205, 136, 110, 142, 336, 175, 184, 198, 114, 133, 100, 73, 67, 104, 321, 75, 512, 70, 245

Do I need to export this data as a data frame (allowing vectors of different lists to be exported)?
Sorry I am currently learning R and have a basic knowledge, could someone suggest the code I need to perform such a task (i this is what need to do).

Thanks for you time,
Helen