FormatException during Json.net deserialization

I'm faced wiht an error, and I don't know how to correct it. I don't understand why it comes.

System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.

The exception comes when I try to deserialize a JSON into objects that I created. (The second line code is throwing the exception)

List<Connection> connections = new List<Connection>();
var root = JsonConvert.DeserializeObject<RootObject2>(content);
connections = root.connections;

Here is the JSON that I want to use:

http://transport.opendata.ch/v1/connections?from=lausanne&to=fribourg

And here are my objects:

public class RootObject2
{
    public List<Connection> connections { get; set; }
}

 public class Connection
    {
        public Stop from { get; set; }
        public Stop to { get; set; }
        public string duration { get; set; }
        public int? transfers { get; set; }
        public Service service { get; set; }
        public List<string> products { get; set; }
        public int? capacity1st { get; set; }
        public int? capacity2nd { get; set; }
        public List<Section> sections { get; set; }
    }

  public class Stop
    {
        public Station station { get; set; }
        public DateTime arrival { get; set; }
        public int? arrivalTimestamp { get; set; }
        public string departure { get; set; }
        public int? departureTimestamp { get; set; }
        public int? delay { get; set; }
        public string platform { get; set; }
        public Prognosis prognosis { get; set; }
        public string realtimeAvailability {get; set;}
        public Station location { get; set; }
    }

   public class Station
    {
        public string id { get; set; }
        public string name { get; set; }
        public int? score { get; set; }
        public Coordinate coordinate { get; set; }
        public double? distance { get; set; }
    }

   public class Service
    {
        public string regular { get; set; }
        public string irregular { get; set; }
    }

   public class Section
    {
        public Journey journey { get; set; }
        public Walk walk { get; set; }
        public Stop departure { get; set; }
        public Stop arrival { get; set; }
    }


   public class Journey
        {
            public string name { get; set; }
            public string category { get; set; }
            public string subcategory { get; set; }
            public int? categoryCode { get; set; }
            public string number { get; set; }
            public string @operator { get; set; }
            public string to { get; set; }
            public List<Stop> passList { get; set; }
            public int? capacity1st { get; set; }
            public int? capacity2nd { get; set; }
        }


 public class Walk
    {
        public string duration { get; set; }
    }

public class Prognosis
{
    public string platform { get; set; }
    public string arrival { get; set; }
    public string departure { get; set; }
    public int? capacity1st { get; set; }
    public int? capacity2nd { get; set; }
}

public class Coordinate
{
    public string type { get; set; }
    public double x { get; set; }
    public double y { get; set; }
}

The deserialization is on a try and catch block, and nothing is catched. Also I am doing this on Android.