crying all night

Question
i recently brought a 2 1/2 year old Yorkshire terrier through a private sale , although well toilet trained and very well behaved in general he cries barks and scratches the doors whenever he is left alone. he cries all night long and I've now got very upset neighbors. I've tried all the usual tricks of putting an item of my clothing with him as well as leaving the radio , lights on etc. I've managed to leave him for up to an hour so far with no incident which is a great improvement from day one when even 5 mins was to much. i don't want to resort in allowing him in my bedroom with me nor outside my door as my young children sleep with there doors open so he could gain access to them.i ont want to give up on this lovely dog as he has already become a family member who we all love so much but lack of sleep is making it very hard.

Answer
This dog is frightened and confused (or was, seems to be improving.)  He most likely was accustomed to sleeping with a person, or nearer to family members than he is now.  There's absolutely nothing you can do, short of bringing the dog into your bedroom, but wait it out as he makes this adjustment to a new family and new environment.  If you have an old baby monitor, you might try putting the receiver in the room with the dog and telling him "quiet".  This might work due to the unexpected and mysterious (and totally incomprehensible) voice, but it might also backfire.  The dog might also receive this as a reward (attention) for his barking and whining.  Personally, I would bring a small breed, insecure dog into my bedroom.  Since you're opposed to this, my only suggestion to end this frustrating night time noise is to condition the dog to being in another room from you during the day.  You can start with thirty minute interval during which you time you ignore any vocalization.  Don't let the dog out without first interrupting any vocalization (by making a sudden noise from another room); if you can count to ten and the dog is still quiet, you can then allow him back into the room with you and reward him with a minute or two of affection.  Doing this daily, while slowly extending the time period he is in a room alone, might condition him to remain silent until your reappearance.