2,2,4,4,6,6,8,8,10,10,12,12-DODECA(1H-PYRAZOL-1-YL)-2.LAMBDA.~5~,4.LAMBDA.~5~,6.LAMBDA.~5~,8.LAMBDA.~5~,10.LAMBDA.~5~,12.LAMBDA.~5~-CYCLOHEXAPHOSPHAZA-1,3,5,7,9,11-HEXAENE